SERVICE MANUAL - Wiki Karat
Contents
1. 14 2 e LL Y 355 435 007 S FRONT PANEL REAR PANEL VIEW FRONT PANEL CONTROLS RDS Stereo Tuner S400 230V VERSION 120V VERSION 1 POWER SWITCH 5 ANTENNA 8 DISPLAY DISPLAY BUTTON 2 MONO MUTE 6 PRESET 230V VERSION 9 STORE 3 BLEND 6 MODE 120V VERSION 10 TUNE 4 T LED INDICATORS the cover to gain access to the interior of the unit Only proper operation of the unit The graphic symbol of a lightning flash with an arrow point The graphic symbol of an exclamation point within a within a triangle signifies that there if dangerous voltage triangle warns a user of the device that is it necessary with the unit and it posses a hazard to anyone removing to refer to the instruction manual and it s warning for qualified service personnel should make such an attempt REAR PANEL CONNECTIONS FIGURE 1 1 FM ANTENNA 2 OUTPUT 3 NAD LINK IN OUT 4 IEC AC MAINS INPUT PRODUCT SAFETY SERVICING GUIDELINES FOR NAD PRODUCTS CAUTION DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC TURER S APPROVAL UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES2. NITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE SUBJECT X RADIATION 1 BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER SONNEL COVER THE SUBJECT OF X RADIATION THE ONLY POTEN TIAL SOURCE OF X RAYS IN CURRENT T V RECEIVERS IS THE PIC TURE TUBE HOWEVER THIS TUBE DOES NOT EMIT X RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC OPERA TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC TURE TUBE OR HIGH VOLTAGE SUPPLY AND UNDER CERTAIN CIR CUMSTANCES MAY PRODUCE RADIATION IN EXCESS OF DESIR ABLE LEVELS 2 ONLY FACTORY SPECIFIED C R T ANODE CONNECTORS MUST BE USED DEGAUSSING SHIELDS ALSO SERVE AS AN X RAY SHIELD IN COLOR SETS ALWAYS RE INSTALL THEM 3 IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER THE CALIBRA TION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR 4 WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X RADIATION PROBLEM EVERY TIME A COLOR CHASSIS IS SERVICED THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED
3. NSCHN0G406 0701 1 Drawn By KIRALY NAD S400 INPUT CONTROL 2 FILTR 12UDC FROM PSU 1 056 OUTPUT 5 TUNING VOLTAGE 2 Sv DC FROM PSU CF2 197143 1672 2 HH our 19 ANTENNA 1 BANDWIDTH 5T ECT CPU SEC L 0 9180 2054 ED CONTROL OUT FRONTPANEL S v INPUT CONTROL FROM SYNTH Title TUNER FRONTEND AND IF PRESTAGE Size Number Date 17 0CT 20800 Sheet 2 of 34 File NSCHNOA 0 020371 Drawn By KIRALY 1 2 3 4 5 6 7 8 NAD 5400 MAIN BOARD a a a ul NAD 5400 MAIN BOARD xc 7 NAD S400 POWER BOARD UTOE AL C2Y elle SET JUMPERS FOR APPROPRIATE 1180 UOLTAGE 230 CAUTION THIS BOARD CARRIES HIGH VOLTAGE 60 0 9 S400PWR PCB NAD S400 PWR NAD 5400 POWER BOARD d 03 DEI NAD 5400 SUB DISPLAY BOARD NAD 5400 MAIN DISPLAY BOARD NAD 5400 MAIN DISPLAY BOARD cone 910 6 9 e 0 ELECTRICAL PARTSLIST MOTHERBOARD 00 R10 1206 SMD MCR18F1000 ROHM 6390 4160 00 R100 1206 SMD MCR18F1000 ROHM 6245 4195 00 R28 1206 SMD MCR18F1000 ROHM 6625 2340 00 R75 1206 SMD MCR18F1000 ROHM 4650 4025 00
4. RTT 1206 SMD MCR18F1000 ROHM 3950 4025 00 R87 1206 SMD MCR18F1000 ROHM 3600 1045 00 R95 1206 SMD MCR18F1000 ROHM 3600 955 00 R35 1206 SMD 00 7 YAGEO 5900 4000 00 R40 1206 SMD 00 71 YAGEO 5000 2100 00 R41 1206 SMD RCO6A104JT YAGEO 4900 2100 00 R46 1206 SMD 00 717 YAGEO 4676 2280 00 R53 1206 SMD 00 71 YAGEO 4426 1970 00 R6 1206 SMD 00 717 YAGEO 6790 4095 00 R61 1206 SMD 00 717 YAGEO 3925 1250 00 R63 1206 SMD 00 717 YAGEO 3435 1000 00 R66 1206 SMD 00 71 YAGEO 3615 3350 00 R74 1206 SMD 00 71 YAGEO 4315 3350 OON C105 1206 SMD MCH315C104K ROHM 7050 550 00 C107 1206 SMD MCH315C104K ROHM 7200 1050 00 C120 1206 SMD MCH315C104K ROHM 2350 4300 00 C121 1206 SMD MCH315C104K ROHM 2350 3900 00 C122 1206 SMD MCH315C104K ROHM 2350 3000 00 C123 1206 SMD MCH315C104K ROHM 2350 2600 00 C124 1206 SMD MCH315C104K ROHM 2350 1700 00 125 1206 SMD MCH315C104K ROHM 2350 1300 00 C126 1206 SMD MCH315C104K ROHM 4900 2975 00 C127 1206 SMD MCH315C104K ROHM 5350 2975 00 C128 1206 SMD MCH315C104K ROHM 2750 4825 00 C129 1206 SMD MCH315C104K ROHM 3050 4825 00 C130 1206 SMD MCH315C104K ROHM 4050 4830 00 C132 1206 SMD MCH315C104K ROHM 4350 4830 00 C133 1206 SMD MCH315C104K ROHM 3540 2700 00 C20 1206 SMD MCH315C104K ROHM 5574 3114 00 C38 1206 SMD MCH315C104K ROHM 4950 1850 00 C44 1206 SMD MCH315C104K ROHM 4426 1595 00 C45 1206 SMD MCH315C104K ROHM 4426 1880 00 Coz 1206 SMD MCH315C104K ROHM 3976 1490 00 C93 206 SMD MCH315C104K ROHM 3675 1200 00 C99 1206 SMD MCH315C104K ROHM
5. 6P HEADER CN4 SIP6 WINSLOW 5400 DISPLAY 400 DISPLAY PCBLH98DIO2 PCB LARSHOLT DM1615C VFD16 VFDGLASS DM1615C ITRON NORITAKE ELECTRICAL PARTSLIST DISPLAYBOARD 5400 5400 LARSHOLT BLUE LED LED1 LED RT3 6134 B2S B RODAN BLUE LED LED2 LED RT3 6134 B2S B RODAN BLUE LED LED3 LED RT3 6134 B2S B RODAN BLUE LED LED4 LED RT3 6134 B2S B RODAN BLUE LED LED5 LED RT3 6134 B2S B RODAN HEF4094BP DIP16 HEF4094BP PHILIPS OON cl CERCAP2 R152104M1HH5 6 CANTEC 4K42 R1 AXIALO 4 4K42 PHILIPS 2K49 R2 AXIALO 4 2K49 PHILIPS K96 R3 AXIALO 4 1K96 PHILIPS K6 R4 AXIALO 4 1K6 PHILIPS K33 R5 AXIALO 4 1K33 PHILIPS K1 R6 AXIALO 4 1k1 PHILIPS 953E R7 AXIALO 4 953E PHILIPS 820E R8 AXIALO 4 820E PHILIPS K05 R9 AXIALO 4 1K05 PHILIPS 2K7 R10 AXIALO 4 2K7 PHILIPS 2K7 R1 AXIALO 4 2K7 PHILIPS 2K7 R12 AXIALO 4 2K7 PHILIPS 2K7 R13 AXIALO 4 2K7 PHILIPS 2K7 R14 AXIALO 4 2K7 PHILIPS 2X8P HEADER CONN5 DC16 W8816 WINSLOW MSW1 SW POWERSWITCH MS 59 A YI WAI SDTX 610 N TS TACT6X6 SDTX 610 N BOURNS SDTX 610 TS2 TACT6X6 SDTX 610 N BOURNS SDTX 610 TS3 TACT6X6 SDTX 610 N BOURNS SDTX 610 TS4 TACT6X6 SDTX 610 N BOURNS SDTX 610 TS5 TACT6X6 SDTX 610 N BOURNS SDTX 610 TS6 TACT6X6 SDTX 610 N BOURNS SDTX 610 TS7 TACT6X6 SDTX 610 N BOURNS SDTX 610 TS8 TACT6X6 SDTX 610 N BOURNS SDTX 610 N TS9 TACT6X6 SDTX 610 N BOURNS ELECTRICAL PARTSLIST POWERBOARD VALUE DE
6. VALUE AND THAT IT IS REGULATING CORRECTLY WE SUGGEST THAT YOU AND YOUR SERVICE ORGA NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE DURE AND THAT THE HIGH VOLTAGE READING BE RECORDED ON EACH CUSTOMER S INVOICE 5 WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY DO NOT OPERATE THE PRODUCT LONGER THAN IT IS NECESSARY TO LOCATE THE CAUSE OF EXCES SIVE VOLTAGE 6 REFER TO HV B AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS WHERE USED SUBJECT IMPLOSION 1 ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE GRAL IMPLOSION PROTECTION SYSTEM BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION AVOID SCRATCHING THE TUBE IF SCRATCHED REPLACE IT 2 USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES SUBJECT TIPS ON PROPER INSTALLATION 1 NEVER INSTALL ANY PRODUCT IN A CLOSED IN RECESS CUBBY HOLE OR CLOSELY FITTING SHELF SPACE OVER OR CLOSE TO HEAT DUCT OR IN THE PATH OF HEATED AIR FLOW 2 AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR NEAR STEAM RADIA TORS WHERE STEAM LEAKAGE IS A FACTOR ETC 3 AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC ORATIVE SCARVES OR OTHER C
7. of the RF signal generator Adjust L12 until minimum audio output is measured in the right side Record this minimum output level Switch on the modulation in the right side of the RF signal generator Switch off the modulation in the left side of the RF signal generator Adjust L12 until minimum audio output is measured in the left side Record this minimum output level Use the side with the worst channel separation to adjust L12 by repeating the above two steps After adjusting L12 adjust C37 to minimum output level maximum channel separation Channel separation should be 45 dB 5 dB Press the IF button to select IF NARROW Check that the channel separation drops approximately 10 dB 5dB at the audio output jacks Press the BLEND button to select BLEND ON Check that the channel separation drops to approximately 15 dB 3 dB at the audio output jacks Remove the audio AC voltmeter from the audio output jacks as well as the RF signal generator form the antenna port Set the S400 to default settings for the tuner as the following Press the IF button to select IF WIDE Press the ANTENNA button and select ANTENNA 1 Press the MONO MUTE button to MUTE ON STEREO Press the BLEND button to BLEND OFF Press the BANDWIDTH button to BANDWIDTH WIDE After 10 sec the settings will be stored NAD S400 RIGHT LEFT ANTENNA2 ANTENNA 1 UnsolderClip CF4 O Herz L14 CF3 NAD S400 PU
8. z 5 2 2 2 1N4004 1N4004 1N4448 R18 R29 R68 R69 R70 R71 R72 R73 R76 R80 R83 R84 R85 R86 R90 R94 VR1 C14 215 18 219 C26 C34 C43 C58 C7 C76 677 C8 C95 913 C4 201 C60 C68 CT C3 C28 C70 C27 C36 C5 687 R92 R57 L3 14 R110 R8 R82 R30 R42 R45 R56 2701 6135 617 CZ C24 C94 C40 C62 C80 D6 D7 21 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM ST4TRIM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM SOT23 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM 206 SM 1206 SM 1206 SM PL PL 1206 SMD 1206 SM 1206 SM ARC241 1206 SMD 1206 SMD 1206 SMD 206 SMD 1206 SMD 1206 SMD 1206 SMD 1206 SMD D D D D D E 19 Ze TR PRSE E E O De Dee NE oe 8 Ze thew SMR TORS Tap then SE LE EE CB ECE 1206 SM 1206 SM 1206 SM 1206 SM 1206 SM SM DIOD SM DIODE 1206 SMD MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 MCR18F1002 331461037 MCH315C103K MCH315C103K MCH315C103K MCH315C103K MCH315C103K MCH315C103K MCH315C
9. 0 3700 3064 3174 2969 3309 3384 2600 3650 1775 3650 3730 3915 3825 3499 2340 3174 3824 1700 4100 4100 4700 4700 135 645 4010 4025 3920 4105 2190 2020 3425 3425 4105 4215 550 700 1800 1685 1930 1750 3950 3294 4235 2700 4015 2200 1880 3500 3500 2200 2050 900 VALUE DESIGNATOR FOOTPRINT MANUFACT MANUFACTURER COOR X COOR Y 18 D2 1206 SMD 1N4448 PHILIPS 4000 900 1N4448 D3 1206 SMD 1N4448 PHILIPS 3900 100 1N4448 D4 1206 SMD 1N4448 PHILIPS 4000 100 1N4448 D5 1206 SMD 1N4448 PHILIPS 5150 500 1N4448 D8 1206 SMD 1N4448 PHILIPS 3845 4195 2200U c111 ELKO4M 10M CLP2200AB35 DUBILIER 1500 4350 2200U ELLE ELKO4M 10M CLP2200AB35 DUBILIER 1500 3100 2200U 2113 ELKO4M 10M CLP2200AB35 DUBILIER 1500 1850 220E R89 1206 SMD RC06A221JT YAGEO 6200 1400 220K R60 1206 SMD RC06A224JT YAGEO 3700 2115 220N C100 1206 SMD MCH315F2242 ROHM 6600 1750 220N 033 1206 SMD MCH315F2242 ROHM 4900 2300 220N 238 1206 SMD MCH315F2242 ROHM 5700 2000 220N C92 1206 SMD MCH315F2242 ROHM 5700 1350 2 22P 637 VARCAP75 22228081122 9A PHILIPS 3625 1325 22K R111 1206 SMD RC06A223JT YAGEO 6985 3825 22K R12 1206 SMD RC06A223JT YAGEO 5350 1350 22K R78 1206 SMD RC06A223JT YAGEO 7130 3135 22K R81 1206 SMD RC06A223JT YAGEO 5150 680 22N C25 1206 SMD MCH315C223K ROH 6900 2600 22N C30 1206 SMD MCH315C223K ROH 5650 2245 22N Cal 1206 SMD MCH315C223K ROH 5750 2245 22P C
10. 103K MCH315C103K MCH315C103K MCH315C103K MCH315C103K MCH315C103K MCH315C103K MCH315A100D MCH315A100D BZX84C11 215 MCH315A121J MCH315A121J MCH315C102K MCH315C102K MCH315A270J MCH315A270J MCH315A150J MCH315A150J 315 1500 315 1500 RC06A181JT RC06A183JT 19KA5305BX 19KA5305BX RC06A102JT RC06A102JT RC06A102JT 1K0X4ARC241 MCR18F1301 MCR18F1801 RC06A564JT MCH315C102K MCH315C102K MCH315C102K MCH315C102K MCH315C102K MCH315C102K MCH315C102K MCH315C122K MCH315C122K MCH315C122K 1N4004 1N4004 1N4448 MANUFACTURER ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH BOURNS ROH ROHM ROH ROH ROH ROH ROH ROHM ROHM ROH ROH ROH ROH ROH ROH PHILIPS ROH ROH ROH ROH ROH ROH ROH ROH ROH ROH YAGEO YAGEO LARSHOLT LARSHOLT YAGEO YAGEO YAGEO PHILIPS ROH ROH YAGEO ROH ROH ROH ROH ROH ROH ROH ROH ROH PHILIPS PHILIPS PHILIPS PHILIPS COOR X COOR Y 5609 6300 4250 3550 3550 3550 4250 4250 5675 5150 4100 6100 6150 3800 6800 4100 5964 6649 6649 6064 5609 6100 3950 4425 4650 6165 7130 7130 6739 6850 6749 6699 6400 3550 4250 7050 5850 5495 5495 6790 6595 5710 6245 6900 3700 3950 4650 6050 6610 5300 5825 5375 4626 3700 6700 5100 5609 6840 6700 6090 7150 4626 4400 3700 800 800 3900 3204 2050 3650 3550 3650 3800 3550 3800 1640 770 3900 115 950 900 175
11. 11 1206 SMD MCH315A220J ROH 7009 3499 22P C12 1206 SMD MCH315A220J ROH 6919 3499 22 C23 1206 SMD MCH315A220J ROHM 5954 2824 24LC16 IC8 SMD08 24LC16 SGS 6400 900 27 R37 1206 SMD MCR18F2702 ROH 4625 1495 27 R59 1206 SMD MCR18F2702 ROH 3700 1840 27 R97 1206 SMD MCR18F2702 ROH 5150 1800 27 2 1206 SMD RC06A273JT YAGEO 3625 4540 27 R33 1206 SMD RC06A273JT YAGEO 3625 4630 27P C90 1206 SMD MCH315A270J ROH 6100 450 248 C91 1206 SMD MCH315A270J ROH 6100 550 27 C98 1206 SMD MCH315A270J ROH 7150 1800 2K2 R24 1206 SMD RC06A222JT YAGEO 6250 2650 2K2 R50 1206 SMD RC06A222JT YAGEO 4626 1970 2K2 R93 1206 SMD RC06A222JT YAGEO 6900 1200 2K2 R98 AXIALO 5 RC06A222JT YAGEO 2100 1200 2K2 R31 1206 SMD RC06A222JT YAGEO 3625 4450 2N2 C16 1206 SMD MCH315C222K ROHM 6700 2800 2N2 C6 1206 SMD MCH315C222K ROHM 2975 3910 2 2 C9 1206 SMD MCH315A2R2C ROHM 6649 3499 2R2 R107 AXIALO 5 2R2 PHILIPS 1000 1250 202 C136 1206 SMD 202 MURATA 4820 1670 2U2 c61 1206 SMD 2U2 MURATA 6630 830 330E RIT 1206 SMD MCR18F3300 ROH 5525 3865 330E R38 1206 SMD MCR18F3300 ROH 5850 2245 330E R5 1206 SMD MCR18F3300 ROH 6755 4235 330P C53 1206 SMD MCH315A331J ROH 4820 1760 36K5 R54 1206 SMD MCR18F3652 ROH 4200 2340 36K5 R55 1206 SMD MCR18F3652 ROH 3890 2340 390E R19 1206 SMD MCR18F3900 ROH 5809 3449 390E R20 1206 SMD MCR18F3900 ROH 5525 3665 390E R26 1206 SMD MCR18F3900 ROH 6700 2600 3K3 R25 206 SMD RC06A332JT YAGEO 6550 2650 3N3 C48 1206 SMD MCH315C332K ROH 4075 2495 3N3 C51 1206 SMD MCH315C332
12. 6A472JT YAGEO 6154 3209 4K7 R34 1206 SMD RC06A472JT YAGEO 6000 1640 4K7 R62 1206 SMD RC06A472JT YAGEO 4180 1375 4K7 R64 1206 SMD RC06A472JT YAGEO 4950 1950 4K7 R88 1206 SMD RC06A472JT YAGEO 4200 1245 4N7 1206 SMD MCH315C472K ROHM 4250 4000 4N7 C67 1206 SMD MCH315C472K ROHM 3550 4000 4R7K LXA 4 AX ALA0410 4R7K T52 T ILARSHOLT 6150 4800 4R7K LXB 4 AX ALA0410 4R7K T52 T ILARSHOLT 6750 4800 4V7 ZD2 DIODEO 4 BZX84C4V7 PHILIPS 1950 1100 560P C106 1206 SMD MCH315A561J ROHM 7200 800 56K R101 1206 SMD RC06A563JT YAGEO 5800 4425 56K R102 1206 SMD RC06A563JT YAGEO 6900 4425 56K 1206 SMD RC06A563JT YAGEO 6850 3700 56K R22 1206 SMD RC06A563JT YAGEO 7099 3499 56K R23 1206 SMD RC06A563JT YAGEO 6829 3499 680K R65 1206 SMD RC06A684JT YAGEO 4176 1490 68K R43 1206 SMD RC06A683JT YAGEO 3700 1740 68K R52 1206 SMD RC06A683JT YAGEO 4426 1685 6K2 R67 1206 SMD MCR18F620 ROHM 4650 3200 6K2 R79 1206 SMD MCR18F620 ROHM 3950 3200 6N8 C49 1206 SMD MCH315C682K ROHM 4175 2495 6N8 C50 1206 SMD MCH315C682K ROHM 3875 2495 6P8 C10 1206 SMD MCH315A6R8C ROHM 6749 2969 000 IC11 SMD14A 74HC00 PHILIPS 4375 850 820K R48 1206 SMD RC06A824JT YAGEO 4426 2280 82K R15 1206 SMD RC06A823JT YAGEO 5809 3259 82K R44 1206 SMD RC06A823JT YAGEO 3851 1640 82P C109 1206 SMD MCH315A820J ROHM 7250 1400 8K2 R49 1206 SMD MCR18F8201 ROHM 4626 1775 8P2 C21 1206 SMD MCH315A8R2C ROHM 5954 2924 8405 1 SMDBRO 8405 DIOTEC 800 3700 8405 BR2 SMDBRO B40S DIOTEC 800 2550 BA679 PD1 1206 SMD BA67
13. 7150 2000 00U C104 SMDELKO6 3 NACE100M16V NIC COMP 6400 1400 00U c110 SMDELKO6 3 NACE100M16V NIC COMP 6350 525 000 115 SMDELKO6 3 NACE100M16V NIC COMP 2350 3650 00U 116 SMDELKO6 3 NACE100M16V NIC COMP 2350 2350 00U 117 SMDELKO6 3 NACE100M16V NIC COMP 2350 1050 00U C118 SMDELKO6 3 NACE100M16V NIC COMP 4975 3250 00U 0113 SMDELKO6 3 NACE100M16V NIC COMP 5275 3250 00U C134 SMDELKO6 3 NACE100M16V NIC COMP 5100 4150 00U C42 SMDELKO6 3 NACE100M16V NIC COMP 4640 2750 00U SMDELKO6 3 NACE100M16V NIC COMP 6650 525 OE R36 AXIALO 5 RCO6A100JT YAGEO 1000 1100 OE R39 1206 SMD RCO6A100JT YAGEO 5000 2300 OE R5 1206 SMD RC0O6A100JT YAGEO 4700 2400 OE R9 1206 SMD RCO6A100JT YAGEO 6475 4160 OE R96 AXIALO 5 RCO6A100JT YAGEO 1000 600 OE 599 1206 SMD RCO6A100JT YAGEO 6050 4195 OE R2 1206 SMD RC0O6A100JT YAGEO 1125 2190 OK R105 1206 SMD MCR18F1002 ROHM 6050 4375 08 R106 1206 SMD MCR18F1002 ROHM 6240 4375 08 R108 1206 SMD MCR18F1002 ROHM 4800 3700 08 R109 1206 SMD MCR18F1002 ROHM 4800 3900 OK R112 1206 SMD MCR18F1002 ROHM 6050 2275 R115 1206 SMD MCR18F1002 ROHM 6050 1850 VALUE DESIGNATOR FOOTPRINT MANUFACT Xs Xx CX x ON NN NON AAA TOGOG OGOGO OO O O O O 2 2 2 2 2 2 2 2 2 2 2 2 2 11VZ 120P 120P 120P 120P 120P 120P 15P LSP 15 180 18 19KA5305BX 19KA5305BX
14. 7637A or equivalent DMM with a basic accuracy of better than 0 05 High impedance 10 dual channel audio AC voltmeter with decibel readout with accuracy of better than 3 Dual channel oscilloscope that has greater than 20MHz bandwidth Non Ferris tuning tools ALIGNMENT PROCEDURE WARNING MOST OF THE ALIGNMENT POINTS AND ADJUSTMENTS ARE FOUND UNDER A SEALED BY SOLDER SHIELD NORMALLY THERE SHOULD NOT BE A REASON FOR ACCESS TO THE ALIGNMENT POINTS AND ADJUSTMENTS UNLESS PARTS HAVE BEEN REPLACED ONLY ATTEMPT ALIGNMENT IF ALL EQUIPMENT MENTIONED ABOVE IS AVAILABLE AND ONLY IF QUALIFIED PERSONNEL PERFORM THE ALIGNMENT Depending on the country the S400 can be setup differently via the front panel buttons Hold down the MODE button while switching on the power You now see a start up menu where you can toggle between the various menu options with the DISPLAY button and save the choice with the STORE button For continental US select BAND EU USA 87 500 MHz to 108 500 MHz EQ 75us AUTO STEP 100kHz DELETE PRESETS DISPLAY button yes STORE button no For Europe select BAND EU USA 87 500 MHz to 108 500 MHz EQ 50us AUTO STEP 50kHz DELETE PRESETS DISPLAY button yes STORE button no For Japan select BAND JAPAN 75 500 MHz to 90 500 MHz EQ 75us AUTO STEP 100kHz DELETE PRESETS DISPLAY button yes STORE button no Alignment of RF front end 1 Pr
15. 9G TEMIC 6165 3925 BB804 4 VCD1 SOT23 BB804 4 TEMIC 7050 4360 BB804 4 VCD2 SOT23 BB804 4 TEMIC 5640 4360 BB804 4 VCD3 SOT23 BB804 4 TEMIC 6694 3699 BB804 4 VCD4 50123 BB804 4 TEMIC 6964 3319 BB804 4 VCD5 SOT23 BB804 4 TEMIC 5574 2979 BC848 TE SOT23 BC848 PHILIPS 3625 4325 BC848 T10 SOT23 BC848 PHILIPS 5870 4300 BC848 T6 SOT23 BC848 PHILIPS 4485 2495 BC848 T SOT23 BC848 PHILIPS 4386 470 BC848 T9 SOT23 BC848 PHILIPS 6425 4340 BF840 T3 SOT23 BF840 PHILIPS 6400 2650 BF840 TS SOT23 BF840 PHILIPS 6200 620 BF996 Til SOT143 BF996 PHILIPS 5875 4130 BF996 T8 SOT143 BF996 PHILIPS 6610 4150 C1016007 CONN1 PALCON c1016007 LARSHOLT 6000 5200 VALUE DESIGNATOR FOOTPRINT MANUFACT MANUFACTURER COOR X COOR Y C1016007 CONN2 PALCON c1016007 LARSHOLT 6900 5200 CD4066BM ICA SMD14A HEF4066BM PHILIPS 3875 2700 CD4094 IC16 SMD16A HEF4094 PHILIPS 4645 1025 CFSK107M3 0 20 CF1 CERFILTER CFSK107M3 0 20 TOKO 5625 3515 CSB456 1 RADO 2 CSB456 TOKO 4000 1645 RY24W K RE1 DIP16 RY24W K TAKAMISAWA 3800 4300 J113 JF1 TO 92A J113 LARSHOLT 6000 2100 LH9501 L7 7PL LH9501 LARSHOLT 6449 3824 LH9501 L1 TPL LH9501 LARSHOLT 5640 4125 LH9501 L2 LH9501 LARSHOLT 7050 4125 LH9502 L12 TPL LH9502 LARSHOLT 5874 3704 LH9503 111 1206 SMD LH9503 LARSHOLT 6724 3339 LH9503 L9 1206 SMD LH9503 LARSHOLT 6079 3474 LH9504 L13 TEL LH9504 LARSHOLT 5654 2688 LH9506 L10 JPL LH9506 LARSHOLT 6999 3074 LH9507 L14 LH9507 LARSH
16. ANDWIDTH button to BANDWIDTH WIDE Tune the S400 to 98 00 MHz Connect an audio AC voltmeter with decibel display to both the right and left audio output jacks Set the AC voltmeter to negative 30 dB range Leave the audio AC voltmeter attached to the S400 audio output jacks until told to remove it Then connect an RF signal generator to ANTENNA port 1 and set to Amplitude 45 dBu Pilot tone on 19 kHz 9 10 Modulation off Frequency 98 00 MHz Adjust L3 for a minimum 19 kHz output at the right audio jack Adjust L4 for a minimum 19 kHz output at the left audio jack NAD S400 12 13 14 15 16 17 With the audio AC voltmeter connected as in procedure 9 select O db range for both channels Connect an RF signal generator to ANTENNA port 1 and set to Amplitude 65 dBu Pilot tone on 19 kHz 9 10 Modulation 100 including pilot tone 1KHz 75 kHz L R and L R Frequency 98 000 MHz Set the S400 as the following Press the IF button to select IF WIDE Press the ANTENNA button and select ANTENNA 1 Press the MONO MUTE button to MUTE ON STEREO Press the BLEND button to BLEND OFF Press the BANDWIDTH button to BANDWIDTH WIDE Tune the S400 to 98 00 MHz Check that the audio output is approximately 0 dB 1 dB 775 mV rms in both right and left output jacks Turn the variable capacitor C37 so that the capacitor fins do not mesh then switch off the modulation in the right side
17. F signal is at maximum setting Press the ANTENNA button and select ANTENNA port 2 Check that the IF signal is reduced by a minimum of 40 dB NOTE Return to step 3 and perform the same alignment procedure but substitute L2 for L1 Continue to align L10 L7 L2 and L1 until there is no improvement in IF level maximum level between the two antenna ports and that the isolation between the two ports is greater that 40 dB Alignment of IF Section 6 Connect an RF signal generator to ANTENNA port 1 and set to Amplitude 45 dBu Pilot tone off Modulation off Frequency 98 000 MHz Press the ANTENNA button and select ANTENNA port 1 Press the IF button to select IF WIDE With the same oscilloscope setup as in procedure 3 check that the IF signal had increased approximately 3 dB compared to IF NARROW Remove the oscilloscope probe from the common point between and 74 Connect an RF signal generator to ANTENNA port 1 and set to Amplitude 70 dBu Pilot tone off Modulation off Frequency 98 000 MHz Adjust L13 or VR1 until the centre tune LED turns on Fine adjust VR1 so that it lights from approximately 97 965 MHz to 98 035 MHz equally Alignment of Audio Section 8 10 11 Set the S400 as the following Press the IF button to select IF WIDE Press the ANTENNA button and select ANTENNA 1 Press the MONO MUTE button to MUTE OFF MONO Press the BLEND button to BLEND OFF Press the B
18. GE SIGNAL STRENGHT 0921 DC FROM PSU STOP 1 TO CPU SECTION 17918 19 7 MHZ INPUT RDS DECODER a RCE MONO FROM CPU SECTION 321 ROUND PUAE STEREO PILOT OUT 82 LFBi oa DN LI UDC rROM CPU 5 FPYSD BLEND CONTROL 2 pw PILOT 056 R46 27K M 5 gt gt wv 6 BC848C MUTE FM SIGMAL FROM CPU SECTION Title IF SECTION AND STEREODECODER Size Number Revision 1 1 1 3 of 34 Drawn By KIRALY NAD S400 2 5 2 5 TO REGULATORS TO REGULATORS t2 ELKO GROUND DISPLAY COMTROLLER Meh A A C CC CC CCC NNNNNNNNNNNNNNN SEGMENT DRIVE GRID DRIVE NN NN SS SS SS SS SS SS SS SS SS LA VACUUM FLOURESCENT DISPLAY 1 Size Date 17 20899 File N EDIT ET 0601 2 1 2 3 4 5 6 7 NAD S400 FORCE MOMO MUTE FM TUNER HIGH BLEND SEL MARROV UIDE SEL EQUALIZATION SET SIGNAL STRENGHT FN TUNER KEYBOARD STOP 8 1 FROM FM TUNER STEREO PILOT FROM DECODER TUNING VOLTAGE TO FM VARICAPS IRDATA 5 VDC FROM PSU 12 VDC FROM PSU TO ANTENNA SWITCH AND FRONT L OSC INPUT FROM FM TUNER SECTION 26 10 spe ant RESERVED RAZ 5 2 3 FMI ERCONNEC 25 VEE E RAS 22 veci NTAL NT3 2U A VCC2 INLCK bee 1 zm C 0 lt r G F
19. K ROH 3975 2495 4 0MHZ xT1 XTALV 4 0MHz TXC 7000 1550 4 0MHZ 4 0MHz TXC 5600 500 4 332 2 XT2 XTALV 4 332 2 TXC 7050 1350 470E R27 1206 SMD RC06A471JT YAGEO 6100 2700 470N 6131 1206 SMD 312 4742 4400 2700 470N C54 1206 SMD 12 4742 ROHM 3550 3050 470N 857 1206 SMD 312 4742 ROHM 4250 3050 470N C63 1206 SMD 312 4742 ROHM 4450 3650 470N C64 1206 SMD 312 4742 ROHM 4500 4000 470N C86 1206 SMD 312 4742 ROHM 3800 4000 VALUE DESIGNATOR FOOTPRINT MANUFACT MANUFACTURER COOR X COOR Y 470N C87 1206 SMD 312 4742 ROHM 3750 3650 470N C89 1206 SMD 312 4742 ROHM 5150 590 470P C41 1206 SMD MCH315A471J ROHM 4626 2090 470P C46 1206 SMD MCH315A471J ROHM 4426 2090 470U C114 RB 2 4 2222 037 50471 PHILIPS 1650 800 470U C29 RB 2 4 2222 037 50471 PHILIPS 900 1500 470U C69 RB 2 4 2222 037 50471 PHILIPS 700 900 47E R114 1206 SMD RC06A470JT YAGEO 6875 550 47E R14 1206 SMD RC06A470JT YAGEO 6165 3830 R7 1206 SMD RC06A470JT YAGEO 5100 3850 47K R47 1206 SMD RC06A473JT YAGEO 4426 2310 47N C32 1206 SMD MCH315C473K ROHM 5700 2100 47N C47 1206 SMD MCH315C473K ROHM 4426 2190 47P C108 1206 SMD MCH315A470J ROHM 6650 1400 47P C22 1206 SMD MCH315A470J ROHM 612 2849 4K7 R103 1206 SMD RC06A472JT YAGEO 6050 4285 4K7 R104 1206 SMD RC06A472JT YAGEO 6610 4365 4K7 R16 1206 SMD RC06A472JT YAGEO 5809 3354 4K7 R17 1206 SMD RC0
20. N F 5 M D 6 6 6 T SEL LED 50086579 KEYBOARD R93 2K2 N12 4 amp 332nhHz 167 1183 2199 10 7 2 74HCUG 5 SIGNAL INPUT FROM TUNER REMARK CONS PROGRAMMING AFTER PROGRAMMING Title TT FIN 4 AND S MUST CPU RDS AND SYNHES ZER BE SHORTENED 8 Size Number Revision t VDD TO CPU LL 5 1 18 Date 17 OCT 2644 File 56 0 646 050171 Drawn KIRALY 1 2 3 4 5 6 7 8 NAD S400 12UDC FROM PSU SECTION 65837 cnp 470 5701 Hevn Em 12UDC FROM PSU SECTION 18VDC UNREGULATED 1 6 5 CHANNEL FROM 0 REODECODER STARTUP MUTING RELAY N C 55008 i A STEREO GROUND N4148 775 mv 75 KHZ MOD 1KHZ 86 dB uV RF I1MPUT 104 27K 5594 OUTPUT RIGHT 5592 S JE Ri FROM pss 6 0 POUER TRANSF amp TH ORDER 15 kHz LOU PASS FILTER TO CPU PIM 4 Title FILTER AND SIGNAL OUTPUT SECTION Size Number Revision 4 84 3 9 Date 16 JUN 39 T File 5 06 646 Drawn KIRALY 8 12V DC ANT 1 FROM TRANSFORMER j CONG FA 12 C1 7 GROUND TO C113 7 VEE DISPLAY TRANSF ON CHASSIS FILAMENT DISPLAY FILAMENT DISPLAY Title POUERSUPPLY AND CONNECT IONS Size Number NAD 846 UT 2 Y Date 17 0CT 266 Sheet 34 File
21. OLT 5378 1580 LM7805CK ICREG3 D2 HOUSING LM7805CK NATIONAL 2700 1500 LM7812CK ICREG2 D2 HOUSING LM7812CK NATIONAL 2700 2800 LM7912CK ICREG1 D2 HOUSING LM7912CK NATIONAL 2700 4100 METAL CAN 7256 CAN 7256 CAN 7256 CAN LARSHOLT XX XX OPA2132UA IC5 SMD08 OPA2132UA BURR BROWN 3750 3825 OPA2132UA IC6 SMD08 OPA2132UA BURR BROWN 4450 3825 PCB PCB PCB S400MBD5 PCB LARSHOLT XX XX PIC16C76 ICT SMD28 PIC16C76 ICROCHIP 5600 025 SFE107ML CF3 CERFILTER SFE107ML URATA 5900 750 SFE107ML CF4 CERFILTER SFE107ML URATA 5900 900 5 107 22 2 CERFILTER SFE107MZ2 URATA 6200 900 SAA6579T 0 SMD16B SAA6579T PHILIPS 6750 713 TDA1592T IC3 SMD20 TDA1592T PHILIPS 4066 2015 TDA1599T IC2 SMD20 TDA1599T PHILIPS 5165 2350 TLP622 1 SMD OPTO TLP622 TOSHIBA 3550 4500 TSA6057T IC9 SMD16B TSA6057T PHILIPS 7000 900 U4062B 101 DIP18 U4062B LARSHOLT 6554 2799 8816 CONNS IDC16 W8816 WINSLOW 4100 600 YKC21 3271 CONN3 YKC21 YKC21 3271 JALCO 4200 5210 YKC21 3271 CONNA YKC21 YKC21 3271 JALCO 2900 2210 ZSR900G ICREG4 SOT223 ZSR900G ZETEX 5125 2850 K1 SPRING CAN SPRING LARSHOLT 7250 4315 K2 SPRING CAN SPRING LARSHOLT 5450 4315 K3 SPRING CAN SPRING LARSHOLT 7050 2450 K4 SPRING CAN SPRING LARSHOLT 5650 2450 ELECTRICAL PARTSLIST DISPLAYBOARD 100P 1 1206BL PHILIPS 470N C2 1206BL PHILIPS 47K R1 1206BL PHILIPS IS1U621 1 TO92T IS1U621 TEMIC MSC7128 01 1 FP 64 MSC7128 01 OKI 3P HEADER CN1 SIL3 WINSLOW 6P HEADER CN2 SIP6 WINSLOW 6P HEADER CN3 SIP6 WINSLOW
22. OVERINGS WHICH MIGHT OBSTRUCT VENTILATION 4 WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER CIAL MOUNTING KIT MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET OR THE EQUIVALENT THICKNESS IN SPACERS TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS 5 CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION UNLESS THE PRODUCT IS PROPERLY SECURED 6 A PRODUCT ON A ROLL ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART CAUTION THE CUSTOMER ON THE HAZ ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS 7 CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES INC FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T V S OF THE SAME OR LARGER SCREEN SIZE 8 CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SIN GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY NAD S400 ALIGNMENT PROCEDURE FOR NAD S400 EQUIPMENT REQUIRED FOR ALIGNMENT PROCEDURE FM RF signal generator capable of 75MHz to 109MHz output O 75 that can separately modulate left and right channels Panasonic model VP
23. SIGNATOR FOOTPRINT MANUFACT MANUFACTURER COOR X COOR Y PCB PCB PCB PCB PCB AC 114 CONN1 IEC POWERCONN AC 114 YI WAI OE 1 AXIAL 4 MR25 OE PHILIPS OE J2 AXIAL 4 MR25 OE PHILIPS OE J3 AXIAL 4 MR25 OE PHILIPS 5 AT FUSE1 FUSE Fuseholder Fuseholder 1 Fuseholder Fuseholder 2 Transformer T1 T2 T3 Toroid TI 65578 EXPLODED VIEW PACKING DIAGRAM ITEM PART NUMBER DESCRIPTION QTY 1 S100 2110 A POLYFOAM 1SET 2 S100 2210 A CARTON BOX 1 3 S400 S400 1 4 AH POWA POWER CORD NEMA 1 15 POLARIZED 1 4 C POW2 POWER CORD CEE 7 XVII 1 5 WARR WARRANTY CARD 1 6 5400 1 INSTRUCTION MANUAL 1 T 101 000B NAD LINK CABLE 1 8 RC S400 REMOTE CONTROL HANDSET 1 9 101 000A AUDIO CABLE 1 10 03 BATTERIES 1SET 11 GLOVES GLOVES 1 SET SERVICE MANUAL NAD S 0 RDS FM TUNER www nadelectronics com 2003 NAD ELECTRONICS INTERNATIONAL ONTARIO CANADA 0101043 IWANVIN 39IAd3S A o ET E c m A All rights reserved No part this publication may be reproduced stored or transmitted in any form without the written permission of NAD Electronics International RDS FM TUNER
24. TO DO OTHERWISE INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER WHILE SERVICING USE AN ISOLATION TRANSFORMER FOR PROTEC TION FROM A C LINE SHOCK SAFETY CHECKS AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED A CHECK SHOULD BE MADE OF THE FOLLOWING SUBJECT FIRE amp SHOCK HAZARD 1 BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE TRANSPORTED TO AND FROM THE REPAIR SHOP 2 NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS INSULATORS BARRIERS COVERS SHIELDS STRAIN RELIEFS POWER SUPPLY CORDS AND OTHER HARDWARE HAVE BEEN REINSTALLED PER ORIGINAL DESIGN BE SURE THAT THE SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED 3 SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOLDER JOINTS SOLDER SPLASHES OR SHARP SOLDER POINTS BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES 4 CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO PARTS AND COMPONENTS FOR FRAYED LEADS DAMAGED INSULATION INCLUDING A C CORD AND REPLACE IF NECESSARY FOLLOW ORIGINAL LAYOUT LEAD LENGTH AND DRESS 5 NO LEAD OR COMPONENT SHOULD TOUCH A RECIVING TUBE OR A RESISTOR RATED AT 1 WATT OR MORE LEAD TENSION AROUND PROTRUDING METAL SURFACES MUST BE AVOIDED 6 ALL CRITICAL COMPONENTS SUCH AS FUSES FLAMEPROOF RESISTORS CAPACITORS ETC MUST BE REPLACED WITH EXACT FAC
25. TORY TYPES DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIR CUIT MODIFICATIONS 7 AFTER RE ASSEMBLY OF THE SET ALWAYS PERFORM AN A C LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABI NET THE CHANNEL SELECTOR KNOB ANTENNA TERMINALS HAN DLE AND SCREWS TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A C VOLT METER HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY IN THE FOLLOWING MANNER CONNECT A 1500 OHM 10 WATT RESIS TOR PARALLELED BY A 15 MFD 150 V A C TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND WATER PIPE CON DUIT ETC AND THE EXPOSED METALLIC PARTS ONE AT A TIME MEASURE THE A C VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND 15 MFD CAPACITOR REVERSE THE A C PLUG AND REPEAT A C VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART VOLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R M S THIS CORRESPONDS TO 0 5 MILLIAMP A C ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY A C VOLTMETER GOOD EARTH GROUND SUCH AS THE WATER PIPE CONDUIT ETC PLACE THIS PROBE ON EACH EXPOSED METAL PART 10 WATT SUBJECT GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAG
26. ess the IF button to select IF NARROW Press the ANTENNA button and select ANTENNA 2 Then connect an RF signal generator to ANTENNA port 2 and set to Amplitude 45 dBu Pilot tone off Modulation off Frequency 98 000 MHz NAD S400 2 Tune the S400 to 108 500 MHz 90 500 MHz for Japan Looking at the S400 from the front measure with a DMM at the right hand side of R21 found at position R6 on the board Adjust L13 until the tuning voltage is 10 0V DC Tune the S400 to 98 000 MHz 83 00 MHz for Japan Measure with an oscilloscope the IF signal 10 7 MHz at the common point between and CF4 found at position O4 see Figure 1 This point will be DC voltage free Leave the oscilloscope set to this point until told to remove it In the order listed below Adjust L10 until the IF signal for maximum setting Adjust L7 until the IF signal for maximum setting Adjust L1 until the IF signal for maximum setting Readjust L10 L7 and L1 until there is no more improvement for the maximum settings CF4 e Y Ber IF Measurement Point Figure 1 Unsolder Clip Unsolder Clip 7 Figure 2 NAD S400 4 5 With the same oscilloscope setup as in procedure 3 press the ANTENNA button and select ANTENNA port 1 Check that the IF signal is reduced by a minimum of 40 dB Connect the signal generator to ANTENNA port 1 With the same oscilloscope setup as in procedure 43 adjust L2 until the I
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