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Sylvania 6842PE M Service Manual Download Page 74

2-1-8

L0604DCP

(5) Main PSU

A. Discharging

1)  Points to be discharged

2)  Voltage Rating and Discharge Time

- The Discharge Time means that the decay time from initial value of voltage to 10Vdc.

3)  How to discharge

1. Connect Discharge Resistor(2.4k

Ω

/10W) between two pins while the Harness is connected.

2. Order of voltages to be discharged: Va 

→

 Vs 

→

 Vset 

→

 Vscan 

→

 Ve 

→

 PFC

CN8005
   1-4 pin: Va discharge
CN8003
    8-10pin: Vs discharge
    5- 6 pin: Vset discharge
    3- 4 pin: Vscan discharge
CN 8002
   7-9 pin: Vs discharge
   3-5 pin: Ve discharge  
CN 8009
   1-3 pin: PFC discharge

3. It is strongly recommended that the discharge is at least 15 seconds with 2.4k

Ω

/10W.

PFC

Vs

Va

Vset

Vscan

Ve

Voltage (Typical)

400V

175V

70V

173V

-60V

160V

Discharge Time By  2.4k

Ω

/10W

5sec

5sec

8sec

4sec

15sec

5sec

Main PSU

CN8003

CN8005

CN8009

CN8002

Pin 1

Pin 10

Pin 1

Pin 5

Pin 1

Pin 9

Pin 1

Pin 5

Vs,
Vscan,
Vset

 Va

Vs,Ve

PFC

Summary of Contents for 6842PE M

Page 1: ...iews I Parts List Main Section I Specifications I Adjustment Procedures I Troubleshooting I Schematic Diagrams I CBA s I Exploded Views I Parts List Model 6842PE has both an A version and a non A vers...

Page 2: ...njury to service personnel The possibility exists that improper service methods may damage the equipment It also is important to under stand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE Funai co...

Page 3: ...t Instructions 1 6 1 Troubleshooting 1 7 1 Block Diagrams 1 8 1 Schematic Diagrams CBA s and Test Points 1 9 1 Waveforms 1 10 1 Wiring Diagram 1 11 1 IC Pin Functions 1 12 1 Lead Identifications 1 13...

Page 4: ...tures Sound Output 5W 5W 10 THD Speaker 2 8 in x 1 6 in Oval Type x 2 Audio IN 0 5Vrms Connectors Component AV Input 1 SD component video Y Cb Cr RCA x 3 rear audio L R RCA x 2 rear Y 1 0Vp p 75 Ohm C...

Page 5: ...1 1 2 L0604SP DIMENSIONS 330 600 70 71 6 660 532 8 1054 934 9 115 58 57...

Page 6: ...customer Repeat this test with the instrument AC switch in the off po sition d Leakage Current Hot Check With the instru ment completely reassembled plug the AC line cord directly into a 120V AC outle...

Page 7: ...ons are issued whenever appropriate Prior to shipment from the factory our products are strictly inspected to con firm they comply with the recognized product safe ty and electrical codes of the count...

Page 8: ...part number specified B In addition to safety other parts and assemblies are specified for conformance with regulations ap plying to spurious radiation These must also be replaced only with specified...

Page 9: ...xposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified val ue in the table below...

Page 10: ...the Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while ap plying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat...

Page 11: ...removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Release the flat pack IC from the CBA using twee zers Fig...

Page 12: ...nstallation 1 Using desoldering braid remove the solder from the foil of each pin of the flat pack IC on the CBA so you can install a replacement flat pack IC more easily 2 The I mark on the flat pack...

Page 13: ...ded to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1M on the workbench or other surfa...

Page 14: ...et 7 AUDIO OUT Output terminals for audio 8 AUDIO VIDEO S VIDEO Input terminals for an audio and video signal You can select either VIDEO or S VIDEO 9 COMPONENT Input terminals for a compo nent signal...

Page 15: ...ermi nals 7 DISPLAY button Displays the name of the selected input terminal on the screen 8 SLEEP button Sets the sleep timer 9 MENU button Accesses the setup menu allowing you to access various setti...

Page 16: ...5 7 Front Cabinet 3 8 Jack Bracket 4 4 S 6 6 9 Jack Holder 4 2 S 7 S 8 7 10 Jack CBA 4 10 2 S 9 CN751 8 6 Decoration Panel 7 Front Cabinet 8 Jack Bracket 9 Jack Holder 10 Jack CBA 15 Filter CBA 16 PCB...

Page 17: ...screws 14 S 11 11 Removal of the Digital CBA Disconnect connec tors CN1701 CN1702 CN1703 CN1706 and CN1707 and remove screws 4 S 12 and 3 S 13 12 Removal of the Analog CBA Disconnect connec tors CN20...

Page 18: ...DC Fig 1 1 Rear Cabinet S 1 S 1 S 1 S 1 S 1 S 1 Fig 2 2 Front Cabinet Assembly 3 Filter Holder L 3 Filter Holder L 4 Filter Holder S 5 Optical Filter 4 Filter Holder S S 2 S 2 S 2 S 2 S 4 S 3 S 3 S 3...

Page 19: ...6 Decoration Panel 7 Front Cabinet S 5 S 5 S 5 S 5 Fig 4 8 Jack Bracket 9 Jack Holder 10 Jack CBA 11 PCB Shield Plate 12 Shield Box 12 Shield Box S 6 S 6 S 7 S 7 S 9 S 10 S 10 S 10 S 10 S 11 S 11 S 11...

Page 20: ...12 S 12 S 14 S 14 S 17 S 16A S 16B S 13 S 15 S 18 S 18 S 18 Inlet Holder AC Cord Fig 5 17 Stand Cover 17 Stand Cover 18 Stand 18 Stand 19 Stand Base 19 Stand Base 20 Rubber Foot 20 Rubber Foot S 19 S...

Page 21: ...ver 21 Speaker Holder 21 Speaker Holder 22 Speaker Cover 22 Speaker Cover 23 Speaker 23 Speaker S 25 S 26 S 26 S 26 S 23 S 23 S 24 S 24 S 26 S 26 S 26 S 27 S 28 S 27 S 27 S 27 S 27 S 25 S 25 S 22 S 22...

Page 22: ...lamper Swtich CBA CN1902 Digital CBA CN203 CN201 CN701 CN1703 CN1702 CN1701 Fig 10 Cables on the Analog CBA Clamper Clamper Clamper Clamper Clamper Swtich CBA Jack CBA Wrap the wires twice Ferrite cor...

Page 23: ...1 5 8 L0604DC Fig 11 Cables on the Filter CBA Clamper Clamper Clamper CN602 CN8001 CN601 Filter CBA Earth...

Page 24: ...mode Service mode 1 To turn the power on press POWER button on the normal remote control unit or the unit 2 Use the service remote control unit 3 Press SLEEP button on the service remote con trol unit...

Page 25: ...again 11 Confirm that both the Black Calibration Complete and White Calibration Complete are displayed on the screen as shown in Fig 4 If Yet is dis played instead of Complete repeat above steps 2 Wh...

Page 26: ...e on the service remote control unit 15 Input the gray scale pattern signal 5 scales from Composite AV Input 1 video jack Video 1 16 Adjust in the same way above 3 Sub Brightness Adjustment Purpose To...

Page 27: ...een Pin 11 and GND Is the 3 3V voltage outputted to the emitter of Q503 After reconnecting CLN601 to CN501 is the following voltage between each pin and GND during turning the power on Check each line...

Page 28: ...nd service it if defective Check lines between Pin 2 on CN701 and JK702 and service it if defective Are serial data signal outputted to TP2022 and TP2023 on the Digital CBA Replace the Plasma Display...

Page 29: ...gnal inputted to Pin 16 on IC202 and Pin 16 on IC203 Is 21V signal inputted to Pin 10 on IC801 Is input switching signal inputted to each pins on IC202 and IC203 is the check point on the componet sid...

Page 30: ...t if defective Check lines between Pin 14 on IC203 and JK753 between Pin 14 on IC202 and JK754 and service it if defective Replace the Digital CBA Replace the Digital CBA When inputting to Video 1 jac...

Page 31: ...ROL Q271 Q272 Q207 Q206 BUFFER REMOTE SENSOR 3 3V 3 3V D1902 STANDBY 15 39 TXD POWER SW P ON H 4 56 14 RESET 181 38 P OFF RQ 54 P OFF H A OUT MUTE AUDIO SW0 AUDIO SW1 AUDIO SW2 A OUT MUTE AUDIO SW0 AU...

Page 32: ...UFFER 137 100 101 103 104 106 143 139 135 145 141 149 153 151 159 INPUT SELECT FRAME DELAY MEMORY CONTROL ADC ADC PICTURE TONE CONTROL OUTPUT FORMATTER VUV 0 VUV 0 7 VY 0 7 VUV 1 VUV 2 VUV 3 VUV 4 VUV...

Page 33: ...TO VIDEO BLOCK DIAGRAM TO SYSTEM CONTROL BLOCK DIAGRAM TO DIGITAL SIGNAL PROCESS 2 BLOCK DIAGRAM VY 0 7 DB 0 DB 0 7 DG 0 7 DR 0 7 DB 6 DB 7 DG 0 DG 7 DR 0 DR 2 DR 3 DR 7 VCLK VVC VHS VY 0 VY 7 PVCLK...

Page 34: ...DER AUTO IMAGE OPTIMIZER COLOR SPACE CONVERTER HDCP GRAPHIC PORT DISPLAY PORT COLOR MATRIX GAMMA CORRECTION CLTs COLOR SPACE EXPANDER MEMORY I F DISPLAY TIMING 31 TLL PARALLEL TO SERIAL CONVERTER CN17...

Page 35: ...1 AUDIO2 R 13 15 14 12 SW CTL 3 10 9 11 IC203 INPUT SELECT 13 15 14 12 SW CTL 3 10 9 11 IC202 INPUT SELECT 5 2 12 6 IC801 AUDIO AMP 7 VOLUME CTL 1 SP L SP802 SPEAKER L CH 2 SP GND CN802 1 SP R SP801 S...

Page 36: ...power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail 1 2 3 CN601 FRAME GND CN8001 CN5...

Page 37: ...rawings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103...

Page 38: ...htly different or amended since the drawings were prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part number...

Page 39: ...own are different from that of IC1401 itself 2 Some pins are not shown because they are not used 3 IC1401 is shown as IC1401 1 4 through IC1401 4 4 in Digital Schematic Diagram section Digital 1 5 Sch...

Page 40: ...ignal Digital 2 5 Schematic Diagram 1 9 5 1 9 6 L0604SCD2 DIGITAL 2 5 Ref No Position IC1101 I 2 IC1502 G 1 IC1503 I 1 IC1504 H 1 IC1505 H 1 IC1506 J 1 IC1507 K 1 Q1101 K 4 Q1102 K 2 Q1701 H 3 Q1702 H...

Page 41: ...of IC1401 itself 2 Some pins are not shown because they are not used 3 IC1401 is shown as IC1401 1 4 through IC1401 4 4 in Digital Schematic Diagram section Digital 3 5 Schematic Diagram 1 9 7 1 9 8 L...

Page 42: ...erent from that of IC1401 itself 2 Some pins are not shown because they are not used 3 IC1401 is shown as IC1401 1 4 through IC1401 4 4 in Digital Schematic Diagram section 1 9 9 1 9 10 L0604SCD4 Digi...

Page 43: ...04SCD5 1 Note 1 The order of pins shown are different from that of IC1401 itself 2 Some pins are not shown because they are not used 3 IC1401 is shown as IC1401 1 4 through IC1401 4 4 in Digital Schem...

Page 44: ...E4 F1 F2 F3 F4 Analog 1 2 Schematic Diagram 1 9 13 1 9 14 L0604SCA1 ANALOG 1 2 Ref No Position IC201 B 4 IC204 C 1 IC205 D 3 Q206 D 1 Q207 D 1 Q271 E 1 Q272 D 1 Q501 B 1 Q503 B 1 CN202 F 2 CN203 F 3...

Page 45: ...atic Diagram 1 9 15 1 9 16 L0604SCA2 ANALOG 2 2 Ref No Position IC202 J 3 IC203 J 2 IC801 J 4 Q203 J 1 Q204 J 1 Q205 J 1 Q701 H 3 Q702 I 3 Q703 H 2 Q704 H 2 Q705 H 1 Q706 H 1 Q707 K 1 Q708 K 2 Q709 K...

Page 46: ...SK OF FIRE REPLACE ONLY WITH SAME TYPE 8A 250V FUSE ATTENTION UTILISER UN FUSIBLE DE RECHANGE DE M ME TYPE DE 8A 250V 8A 250V CAUTION Fixed voltage or Auto voltage selectable power supply circuit is u...

Page 47: ...IC204 C 2 IC205 D 2 IC801 D 4 Q203 C 2 Q204 C 2 Q205 C 2 Q206 E 1 Q207 E 1 Q271 D 2 Q272 C 1 Q501 D 3 Q503 D 3 Q701 A 2 Q702 A 1 Q703 B 2 Q704 A 1 Q705 B 1 Q706 B 1 Q707 A 2 Q708 B 3 Q709 B 3 Q710 B...

Page 48: ...1 9 21 Analog CBA Bottom View 1 9 22 BL0600F01011 1...

Page 49: ...1 9 23 1 9 24 Jack CBA Top View Jack CBA Bottom View BL0600F01011 2...

Page 50: ...Switch CBA Top View Switch CBA Bottom View 1 9 25 1 9 26 BL0600G04011 2...

Page 51: ...blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply ci...

Page 52: ...2 C 2 IC1201 B 4 IC1202 A 4 IC1301 E 2 IC1401 D 4 IC1402 C 4 IC1403 E 3 IC1404 E 4 IC1501 E 1 IC1502 A 2 IC1503 D 2 IC1504 C 3 IC1505 B 3 IC1506 D 3 IC1507 E 3 IC1508 C 5 IC1509 B 5 IC1510 C 5 Q1101 B...

Page 53: ...TP2022 WF4 TP2023 WF5 Digital CBA Bottom View 1 9 31 1 9 32 BL0600G04011 1...

Page 54: ...e observed at Waveform check points Shown in Schematic Diagram 1DIV 1 0V 4ms R1420 WF2 R1421 WF3 1DIV 500mV 20 s R1778 WF8 1DIV 500mV 20 s R1773 WF9 1DIV 500mV 20 s R1776 WF7 1DIV 500mV 20ns UPPER TP2...

Page 55: ...6 7 8 9 10 11 CN502 1 2 3 4 5 6 7 TX03P TX03M GND GND CN701 CN1701 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 GND NU GND VIDEO1 C GND VIDEO1 Y GND VIDEO1 GND VIDEO2 C GND...

Page 56: ...al 27 S SW1 Detecting S Video 1 Signal 28 AUDIO SW2 Switching Audio 2 29 AUDIO SW1 Switching Audio 1 30 AUDIO SW0 Switching Audio 0 31 A OUT MUTE Mute Control 32 A MUTE Mute Control 33 NU Not Used 34...

Page 57: ...24C20D21 M24C02 WMN6 M38034M4H 092KP M38034M4H 159KP PST600L 16 9 1 8 CD4051BNSR E C B E C B 2SA1015 GR TPE2 2SA1175 F 2SC2785 F KTA1267 GR BA1F4M T KRC103M KTA1266 GR KTC3199 GR 2SC1815 GR TPE2 KTC31...

Page 58: ...28 A29 B3 B19 A15 L1 L1 L1 L1 L4 L1 L1 L1 L1 L1 L1 L1 CLN2 CLN5 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 B11 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L9 L9 L3 L3 L3 L3 L3 L3 L4 L4 B11 L2 L2 L2 L2 PB...

Page 59: ...1 14 3 L0604PEX S1 S1 S2 S2 S5 S3 X1 X3 X5 AC601 X4 X2 S6 S4 S7 X6 PACKING TAPE REAR TAPE PACKING TAPE FRONT Packing...

Page 60: ...LN3 WIRE ASSEMBLY 7P WX1L0600 003 WX1L0600 003 CLN4 WIRE ASSEMBLY 8P WX1L0600 004 WX1L0600 004 CLN5 WIRE ASSEMBLY 9P WX1L0600 005 WX1L0600 005 CLN6 WIRE ASSEMBLY 11P WX1L0600 006 WX1L0600 006 CLN7 WIR...

Page 61: ...Part No SWITCH CBA Consists of the following CAPACITORS C1901 CHIP CERAMIC CAP 1608 B K 1000PF 50V CHD1JK30B102 C1904 CHIP ELECTROLYTIC CAP 47 F 6 3V M or CA0K470SP012 CHIP ELECTROLYTIC CAP 47 F 6 3V...

Page 62: ...M or CE1JMASTLR47 ELECTROLYTIC CAP 0 47 F 50V M CE1JMASDLR47 C714 CERAMIC CAP AX B K 1000PF 50V CCA1JKT0B102 C715 ELECTROLYTIC CAP 0 47 F 50V M or CE1JMASTLR47 ELECTROLYTIC CAP 0 47 F 50V M CE1JMASDLR...

Page 63: ...TOR 2SA1015 GR TPE2 QQS102SA1015 Q272 TRANSISTOR 2SA1175 F or QQSF02SA1175 Ref No Description Part No TRANSISTOR KTA1267 GR or NQS10KTA1267 TRANSISTOR KTA1266 GR or NQS40KTA1266 TRANSISTOR 2SA1015 GR...

Page 64: ...J 100 RCX4JATZ0101 R264 CARBON RES 1 4W J 4 7k RCX4JATZ0472 Ref No Description Part No R265 CARBON RES 1 4W J 4 7k RCX4JATZ0472 R271 CARBON RES 1 4W J 10k RCX4JATZ0103 R272 CARBON RES 1 4W J 10k RCX4J...

Page 65: ...3 RCA JACK WHITE RED YKC21 4042N JXRL020JC024 JS201 PCB JUMPER D0 6 P5 0 JW5 0T JS801 PCB JUMPER D0 6 P5 0 JW5 0T JS802 PCB JUMPER D0 6 P5 0 JW5 0T PB1 HEAT SINK PJH ASSEMBLY L0600UA 0EM409007 X201 X...

Page 66: ...42PE A version TABLE OF CONTENTS Disassembly Instructions 2 1 1 Troubleshooting 2 2 1 Wiring Diagram 2 3 1 Exploded View 2 4 1 Parts List 2 5 1 Plasma Display Module Section I Disassembly Procedures I...

Page 67: ...of Screw B1 X Main Unit XM 8 B2 Y Main Unit YM 7 B3 Y Buffer upper Unit YBU 5 B4 Y Buffer lower Unit YBL 5 B5 Logic Main Unit LM 7 B6 Logic E Buffer Unit LBE 6 B7 Logic F Buffer Unit LBF 3 B8 Logic G...

Page 68: ...from both sides of plastic plate 2 Push with same pressure at both sides until completely inserted Caution Please be cautious that the pins of connector of FPC do not bend by miss aligning of male and...

Page 69: ...nd flat cables of which terminal must be correctly matched aligned If the connector is re connected after repair work it should be correctly aligned 5 The capacitors in the boards remain temporarily c...

Page 70: ...447 LT448 Manufacturer LEADER ELECTRONICS CORP or similar one 6 How to connect disconnect the FFC and TCP to connectors 1 How to Disconnect TCP 1 Flip over the cover of connector carefully 2 Take out...

Page 71: ...nd LBG 1 Unscrew all screws of the Heat Dispersion Bar in the order of 2 3 5 6 7 1 4 and remove the Heat Dispersion Bar 2 Disconnect all TCP FFC Power Cable from connectors 3 Unscrew all screws of def...

Page 72: ...he YBU and YBL from YM Reassembly Notes 1 After re assembling YBU YBL and YM turn on the module and check the waveform for the Driv ing board refer to How to adjust waveform below 2 If the waveform is...

Page 73: ...hard failure of module Remove dust by using clean air is highly recommended before connection is made XM CN4001 CN4002 Flat cables LM CN201 CN401 CN402 CN403 CN803 LA03 CN101 1 Disconnect all connect...

Page 74: ...a Vs Vset Vscan Ve PFC CN8005 1 4 pin Va discharge CN8003 8 10pin Vs discharge 5 6 pin Vset discharge 3 4 pin Vscan discharge CN 8002 7 9 pin Vs discharge 3 5 pin Ve discharge CN 8009 1 3 pin PFC disc...

Page 75: ...Points refer to How to adjust Voltages of PSU below 6 If all voltages are OK then turn the power off 7 Connect all connectors between Main PSU and other Boards 2 How to adjust voltages of PSU 1 Measu...

Page 76: ...e fuse F9001 F9002 normal Replace the SMPS unit Replace the SMPS unit Replace the SMPS unit Replace the Video SMPS unit Replace the Video SMPS unit Does the Relay RLY8001 RLY8002 operate normally And...

Page 77: ...01 F5003 normal on the Y MAIN unit Is the fuse F4001 F4003 normal on the X MAIN unit Yes No Yes Yes Yes Yes Yes Yes No No No No No Replace the Y MAIN unit Replace the Y MAIN unit Replace the X MAIN un...

Page 78: ...it or Y BUFFER LOWER unit Is there the same symptom Replace LOGIC MAIN unit LOGIC E BUFFER unit LOGIC F BUFFER unit or LOGIC G BUFFER unit Is there the same symptom Yes Yes Yes Yes No No No There is a...

Page 79: ...TO PLASMA DISPLAY PANEL CN5501 TO PLASMA DISPLAY PANEL TO PLASMA DISPLAY PANEL TO PLASMA DISPLAY PANEL CN5502 CN5503 CN9005 CN8009 CN9006 CN8007 CN9007 CN8001 CN4003 CN4004 CN4005 CN9001 CN9002 CN900...

Page 80: ...2 4 1 L0600PCEX 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 15 15 15 16 17 18 21 22 22 22 22 23 24 19 20 20 A A 25 EXPLODED VIEWS OF PDP MODULE...

Page 81: ...1EDM10315 7 X Main Unit 1EDM10314 8 Logic Main Unit 1EDM10313 9 Y Buffer upper Unit 1EDM10321 10 Y Buffer lower Unit 1EDM10322 11 Logic E Buffer Unit 1EDM10318 12 Logic F Buffer Unit 1EDM10319 13 Log...

Page 82: ...6842PE L0604UE 2004 09 21...

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