Nad S 400 Service Manual

Page 1

Page 2

CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- TURERS 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 GUIDELINES. 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 & SHOCK HAZARD 1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAYAS 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 FACTORY 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. 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- 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 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 CUSTOMERS 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 COVERINGS 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. PRODUCT SAFETY SERVICING GUIDELINES FOR NAD PRODUCTS A.C. VOLTMETER GOOD EARTH GROUND SUCH AS THE WATER PIPE. CONDUIT. ETC PLACE THIS PROBE ON EACH EXPOSED METAL PART

Page 8

Pre l i mi nar y NAD S400

Page 18

NAD S400 SUB DISPLAY BOARD

Page 25

P r e l i m i n a r y 470N C87 1206 SMD MCH312F474Z ROHM 3750 3650 470N C89 1206 SMD MCH312F474Z 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 47E R7 1206 SMD RC06A470JT YAGEO 5100 3850 47K R47 1206 SMD RC06A473JT YAGEO 4426 2370 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 6129 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 RC06A472JT 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 C59 1206 SMD MCH315C472K ROHM 4250 4000 4N7 C67 1206 SMD MCH315C472K ROHM 3550 4000 4R7K LXA .4 AX ALA0410-4R7K-T52-T/ RLARSHOLT 6150 4800 4R7K LXB .4 AX ALA0410-4R7K-T52-T/RLARSHOLT 6750 4800 4V7 ZD2 DIODE0.4 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 R13 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 MCR18F6201 ROHM 4650 3200 6K2 R79 1206 SMD MCR18F6201 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 74HC00 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 B40S BR1 SMDBRO B40S DIOTEC 800 3700 B40S BR2 SMDBRO B40S DIOTEC 800 2550 BA679 PD1 1206 SMD BA679G 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 SOT23 BB804-4 TEMIC 6964 3319 BB804-4 VCD5 SOT23 BB804-4 TEMIC 5574 2979 BC848 T1 SOT23 BC848 PHILIPS 3625 4325 BC848 T10 SOT23 BC848 PHILIPS 5870 4300 BC848 T6 SOT23 BC848 PHILIPS 4485 2495 BC848 T7 SOT23 BC848 PHILIPS 4386 1470 BC848 T9 SOT23 BC848 PHILIPS 6425 4340 BF840 T3 SOT23 BF840 PHILIPS 6400 2650 BF840 T5 SOT23 BF840 PHILIPS 6200 1620 BF996 T11 SOT143 BF996 PHILIPS 5875 4130 BF996 T8 SOT143 BF996 PHILIPS 6610 4150 C1016007 CONN1 PALCON C1016007 LARSHOLT 6000 5200 VALUE DESIGNATOR FOOTPRINTMANUFACT P.N. MANUFACTURER COOR X COOR Y

Page 27

P r e l i m i n a r y ELECTRICAL PARTSLISTDISPLAYBOARD VALUE DESIGNATOR FOOTPRINTMANUFACT P.N. MANUFACTURER COOR X COOR Y S400FT03.PCB PCB PCB S400FT03.PCB 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 IC1 DIP16 HEF4094BP PHILIPS 100N C1 CERCAP2 R15Z104M1HH5-6 CANTEC 4K42 R1 AXIAL0.4 4K42 PHILIPS 2K49 R2 AXIAL0.4 2K49 PHILIPS 1K96 R3 AXIAL0.4 1K96 PHILIPS 1K6 R4 AXIAL0.4 1K6 PHILIPS 1K33 R5 AXIAL0.4 1K33 PHILIPS 1K1 R6 AXIAL0.4 1K1 PHILIPS 953E R7 AXIAL0.4 953E PHILIPS 820E R8 AXIAL0.4 820E PHILIPS 1K05 R9 AXIAL0.4 1K05 PHILIPS 2K7 R10 AXIAL0.4 2K7 PHILIPS 2K7 R11 AXIAL0.4 2K7 PHILIPS 2K7 R12 AXIAL0.4 2K7 PHILIPS 2K7 R13 AXIAL0.4 2K7 PHILIPS 2K7 R14 AXIAL0.4 2K7 PHILIPS 2X8P HEADER CONN5 IDC16 W8816 WINSLOW MSW1 SW1 POWERSWITCH MS-59-A YI-WAI SDTX-610-N TS1 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS2 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS3 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS4 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS5 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS6 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS7 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS8 TACT6X6 SDTX-610-N BOURNS SDTX-610-N TS9 TACT6X6 SDTX-610-N BOURNS ELECTRICAL PARTSLIST POWERBOARD VALUE DESIGNATOR FOOTPRINTMANUFACT P.N. MANUFACTURER COOR X COOR Y PCB PCBPCB PCBPCB AC-114 CONN1 IEC POWERCONNAC-114YI WAI 0E J1AXIAL.4 MR25 0EPHILIPS 0E J2AXIAL.4 MR25 0EPHILIPS 0E J3AXIAL.4 MR25 0EPHILIPS .5 AT FUSE1FUSE Fuseholder Fuseholder 1 Fuseholder Fuseholder 2 Transformer T1,T2,T3 Toroid TI-65578