JVC AV-48WP74 Service Manual
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JVC AV-48WP74 Service Manual

JVC AV-48WP74 Service Manual

Basic chassis sb3
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SERVICE MANUAL
REAR PROJECTION TELEVISION
Since some details of the AV-48WP74
incorrect , We are informing you of these errors and of the new correct descriptions.
ADDITION ITEM
The adjustment performed using test mode is added. For this reason, the item of "HOW TO ENTER THE
TEST MODE" was described below.
1) HOW TO ENTER TEST MODE
1.
Press [SLEEP TIMER] key and set SLEEP
TIMER 30 MIN.
2.
While the indication of SLEEP TIMER 30
MIN. is being displayed, press [DISPLY] key
and [VIDEO STATUS] key. The TEST
MODE screen is displayed. (Fig. 1)
3. Press [5] key and enter the 5.CONVER OFF.
(Fig. 2)
4. Press [INPUT] key and select the cross-hatch
pattern. (Fig. 3)
NOTE : For this adjustment, it is necessary to use
a remote control unit (e.g. RM-C322G) with
[INPUT] key.
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
1
AV-48WP74
AV-56WP74
Supplementary
/ AV-56WP74
/HA
/HA
/HA
service manual (No.52105 2003/4) were
/HA
TEST MODE
2
1. I
C STOP
2. STATUS DISP.
4. SELF-CHK
5. CONVER OFF
ROM CORRECTION : ACT
ROM VERSION :
Fig. 1
Fig. 2
AV-48WP74
AV-56WP74
BASIC CHASSIS
SB3
*******
Fig. 3
No.52105C
2003/10

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  • Page 1 REAR PROJECTION TELEVISION BASIC CHASSIS AV-48WP74 AV-56WP74 Supplementary Since some details of the AV-48WP74 / AV-56WP74 service manual (No.52105 2003/4) were incorrect , We are informing you of these errors and of the new correct descriptions. ADDITION ITEM The adjustment performed using test mode is added. For this reason, the item of “HOW TO ENTER THE TEST MODE”...
  • Page 2 AV-48WP74 AV-56WP74 CORRECT ITEM 1) 2.9.3 SERVICE ADJUSTMENT ITEM (Page.1-18) 8.PP Multi-picture adjustment and ADM001~ADM034 Do not adjust setting DELETION 2) 3.4 ADJUSTMENT LOCATION (1/2) (Page.1-22) MAIN PWB RECEIVER CONVERGENCE OUT PWB MI-COM&DIST Incorrect SUB TUNER MODULE PWB (TU101) MAIN TUNER...
  • Page 3 AV-48WP74 AV-56WP74 4) 3.8.3 FOCUS & BEAM SPOT ADJUSTMENT (Page 1-47) Incorrect Correct CRT FOCUS adjustment point CRT FOCUS adjustment point 5) 3.8.4.2 PREPARATION (Page 1-49) Measuring Item Test point Adjustment part Description instrument SCREEN TILT Signal [1.PICTURE/SOUND] Confirm correct FOCUS adjustment.
  • Page 4 AV-48WP74 AV-56WP74 6) 3.8.4.2 PREPARATION (Page 1-49) RASTER Signal [1.PICTURE/SOUND] (1) Receive NTSC cross-hatch signal. generator CENTERNG & D03 : H. SIZE (2) Select 1. PICTURE/SOUND from SERVICE MENU. D14 : H. CENTER H. POSITION / (3) Select <F62> (Without convergence operation) with [CH...
  • Page 5 AV-48WP74 AV-56WP74 7) 3.6.5 SERVICE MENU SETTING (Page 1-26) 3. WHITE BALANCE Adjustment of LOW LIGHT / HIGH LIGHT 1.SELECT ITEM • Press [CH+] / [CH-] key 2.SETTING VALUE BRIGHT WHITE BALANCE • Press [VOL+] / [VOL-] KEY OPERATION CORRECTION...
  • Page 6 AV-48WP74 AV-56WP74 Correct Incorrect [1.PICTURE/SOUND] [3.WHITE BALANCE] S14: CUTOF R S16: CUTOF G CU T R S18: CUTOF B S20: CUTOF SW R CU T G S21: CUTOF SW G 8) 3.8.5 VIDEO ADJUSTMENT CU T B S22: CUTOF SW B...
  • Page 7 AV-48WP74 AV-56WP74 9) WHITE BALANCE (Page 1-59) Measuring Item Test point Adjustment part Description instrument WHITE Signal [1.PICTURE/SOUND] (1) Receive NTSC black & white signal (color off). generator BALANCE S10: DRIVE R (2) Select STANDARD mode with [VIDEO STATUS] (HIGH LIGHT) S12: DRIVE B key.
  • Page 8 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. www.jvcservice.com(US Only) JVC CANADA INC. Head office : 21 Finchdene Square Scarborough, Ontario M1X 1A7 (416)293-1311 Printed in Japan 200310WPC...
  • Page 9 AV-48WP74 AV-56WP74 PARTS LIST CAUTION The parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified ones to secure the  safety. The parts not indicated in this Parts List and those which are filled with lines --- in the Parts No. columns will not be supplied.

  • Page 10: Table Of Contents

    DIGITAL INPUT MODULE PW BOARD ASS’Y (48WP74CP-S) [AV-48WP74] (56WP74CP-S) [AV-56WP74] ........3-18 DIGITAL CONVERGENCE MODULE PW BOARD ASS’Y (SSB0K070A-M2) [AV-48WP74] (SSB0K069A-M2) [AV-56WP74] ....3-18 MI-COM & DIST MODULE PW BOARD ASS’Y (SSB0D070A-M2) [AV-48WP74] (SSB0D069A-M2) [AV-56WP74] ......3-18 REMOTE CONTROL UNIT PARTS LIST (RM-C1200G-1H) ........................3-18 PACKING ........................................
  • Page 11 AV-48WP74 AV-56WP74 EXPLODED VIEW - 1 AV-48WP74 (AV-56WP74 only) (See Page 3-4) (No.52105)3-3...

  • Page 12: Exploded View Parts List - 1

    AV-48WP74 AV-56WP74 EXPLODED VIEW PARTS LIST - 2  Ref.No. Part No. Part Name Description Local LC31829-001C-A DOOR QYSBSF3012M TAP SCREW 3mm x 12mm(x2) QYSBSF3012M TAP SCREW 3mm x 12mm(x3) LC31883-003A-A CONTROL PANEL LC31749-001A-A LED LENS LC31751-001B-A KNOB AV-48WP74 LC31751-002B-A...
  • Page 13 AV-48WP74 AV-56WP74 FRONT VM PWB (G only) CRT SOCKET PWB (R/G/B) CONVERGENCE OUT PWB DIGITAL CONVERGENCE MODULE RECEIVER PWB MI-COM & DIST DEF OSC PWB MODULE PWB FRONT RELAY PWB T502 DEF & POWER PWB DIGITAL INPUT MODULE PWB MAIN PWB LINE FILTER PWB (No.52105)3-5...

  • Page 14: Printed Wiring Board Parts List

    AV-48WP74 AV-56WP74 PRINTED WIRING BOARD PARTS LIST MAIN PW BOARD ASS’Y Ref No. Part No. Part Name Description Local (SSB-1070A-M2) [AV-48WP74] D1705 MA8100/M/-X Z DIODE (SSB-1069A-M2) [AV-56WP74] D1801 1SR35-400A-T2 SI DIODE Ref No. Part No. Part Name Description Local D1802...
  • Page 15 AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C1333 NCB31HK-103X C CAPACITOR 0.01uF 50V K C1948 QETN1CM-477Z E CAPACITOR 470uF 16V M C1341 NCB11CK-105X C CAPACITOR 1uF 16V K C1949...
  • Page 16 AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C3051 NCB31HK-472X C CAPACITOR 4700pF 50V K R1220 NRSA63J-101X MG RESISTOR 100Ω 1/16W J C3052 NCB31HK-472X C CAPACITOR 4700pF 50V K R1221...
  • Page 17 AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R1647 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R2325 NRSA63J-750X MG RESISTOR 75Ω 1/16W J R1649 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R2328...

  • Page 18: Power & Def Pw Board Ass'y (Ssb-2070A-M2) [Av-48Wp74] (Ssb-2069A-M2) [Av-56Wp74]

    L1943 QQL26AK-330Z COIL 33uH K POWER & DEF PW BOARD ASS’Y L1944 QQL26AK-330Z COIL 33uH K L1945 QQL26AK-220Z COIL 22uH K (SSB-2070A-M2) [AV-48WP74] L1946 QQL26AK-220Z COIL 22uH K (SSB-2069A-M2) [AV-56WP74] L1947 QQR1129-003 CHOKE COIL L1948 QQL26AK-100Z COIL 10uH K Ref No.
  • Page 19 AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D506 FMV-3FU-F1 SI DIODE C907 QEZ0572-128 E CAPACITOR 1200uF 200V M D521 MTZJ12C-T2 Z DIODE QCZ9054-102 C CAPACITOR 1000pF AC250V Z C908...

  • Page 20: R Crt Socket Pw Board Ass'y (Ssb-3168A-M2)

    AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R912 QRT029J-R18 MF RESISTOR 0.18Ω 2W J D3102 1SR124-400A-T2 SI DIODE R913 QRT029J-R18 MF RESISTOR 0.18Ω 2W J R914 QRK126J-681X UNF C RESISTOR 680Ω...

  • Page 21: B Crt Socket Pw Board Ass'y (Ssb-3368A-M2)

    AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local SG3001 QAF0056-501Z SURGE ABSORBER 500V M D823 RD33E/B2/-T2 Z DIODE CE42535-001J1 C R T SOCKET D824 RD33E/B2/-T2 Z DIODE SK3001 D825 RD33E/B2/-T2...

  • Page 22: Vm Pw Board Ass'y (Ssb-7268A-M2)

    AV-48WP74 AV-56WP74 REMOCON SENSOR PW BOARD ASS’Y Ref No. Part No. Part Name Description Local (SSB-8068A-M2) R866 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J Ref No. Part No. Part Name Description Local R867 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J L802 QQL521J-470...
  • Page 23 AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C117 QTMN1CM-477Z E CAPACITOR 470uF 16V M R174 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J C118 NCB31HK-103X C CAPACITOR 0.01uF 50V K R175...

  • Page 24: Receiver Pw Board Ass'y (Ssb0R368A-M2)

    AV-48WP74 AV-56WP74 RECEIVER PW BOARD ASS’Y (SSB0R368A-M2) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R0109 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R0110 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J IC0201 CXA2134Q-X R0111...

  • Page 25: Front Control Pw Board Ass'y (Ssb0L068A-M2)

    AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local Y0001 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J W0027 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J Y0002 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J W0028...

  • Page 26: Front Relay Pw Board Ass'y (Ssb0L268A-M2)

    Description Local CN000G QGF1201C2-17 CONNECTOR FFC/FPC (1-17) CN000H QGF1201C2-13 CONNECTOR FFC/FPC (1-13) DIGITAL INPUT MODULE PW BOARD ASS’Y (48WP74CP-S) [AV-48WP74] (56WP74CP-S) [AV-56WP74]  Ref.No. Part No. Part Name Description Local 48WP74CP-S DIGITAL INPUT MODULE PWB AV-48WP74 56WP74CP-S DIGITAL INPUT MODULE PWB AV-56WP74 DIGITAL CONVERGENCE MODULE PW BOARD ASS’Y...

  • Page 27: Packing

    AV-48WP74 AV-56WP74 PACKING PACKING PARTS LIST  Ref.No. Part No. Part Name Description Local LC11252-004A-A PACKING CASE AV-48WP74 LC11252-005A-A PACKING CASE AV-56WP74 LC31759-001B-A BOTTOM CASE AV-48WP74 LC31759-002A-A BOTTOM CASE AV-56WP74 GQ10057-001A-A TOP CUSHION AV-48WP74 GQ10054-001A-A TOP CUSHION AV-56WP74 LC11254-002B-A CUSHION ASSY...
  • Page 28 AV-48WP74 AV-56WP74 SCHEMATIC DIAGRAMS REAR PROJECTION TELEVISION AV-48WP74 BASIC CHASSIS AV-56WP74 CD-ROM No.SML200304 No.52105 COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/4...
  • Page 29 AV-48WP74 AV-56WP74 AV-48WP74, AV-56WP74 STANDARD CIRCUIT DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS 1.SAFETY Type The components identified by the symbol and shading are No indication :Ceramic capacitor critical for safety. For continued safety replace safety critical :Metalized mylar capacitor :Polypropylene capacitor components only with manufactures recommended parts.
  • Page 30 AV-48WP74 AV-56WP74 CONTENTS USING P.W. BOARD ......................2-3 SEMICONDUCTOR SHAPES ................... 2-3 BLOCK DIAGRAM......................2-4 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM ........................2-6 RECEIVER PWB CIRCUIT DIAGRAM ......................2-30 R CRT SOCKET PWB CIRCUIT DIAGRAM ..................... 2-32 G CRT SOCKET PWB CIRCUIT DIAGRAM ..................... 2-34 B CRT SOCKET PWB CIRCUIT DIAGRAM .....................

  • Page 31: Using P.w. Board

    AV-48WP74 AV-56WP74 USING P.W. BOARD AV-48WP74 AV-56WP74 MAIN P.W. BOARD SSB-1070A-M2 SSB-1069A-M2 RECEIVER P.W. BOARD SSB0R368A-M2 ← R CRT SOCKET P.W. BOARD SSB-3168A-M2 ← G CRT SOCKET P.W. BOARD SSB-3268A-M2 ← B CRT SOCKET P.W. BOARD SSB-3368A-M2 ← VM P.W. BOARD SSB-7268A-M2 ←...

  • Page 32: Block Diagram

    AV-48WP74 AV-56WP74 BLOCK DIAGRAM SPEAKER INPUT TWEETER MI-CO COMP IN TU0102 IC0201 AUDIO L/R SPLITTER TV-V2 VIDEO MAIN MTS/VOL/TONE LSOUT_R U/V FRONTEND WOOFER LSOUT_L COM Y IC0501 COM PR IC0531 COM PB WOOFER RECEIVER IC0561 AUDIO VAR/FIX SW MAIN PWB...
  • Page 33 AV-48WP74 AV-56WP74 R CRT MI-COM & DIST MODULE PWB SOCKET PWB IC201 IC1101 COIL IC101 IC301 IC001 CONVERTER CONVERTER IC2101 IC3001 MAIN/SUB IC201 3D YC SEP DIGITAL G CRT ENHANCE V/H HDCP SOCKET PWB V/H SYNC AOYP AOPRP AOPBP IC1701...

  • Page 34: Circuit Diagrams

    AV-48WP74 AV-56WP74 CIRCUIT DIAGRAMS [RECEIVER UNIT] SHEET 11 SHEET 12 NOT USE MAIN PWB CIRCUIT DIAGRAM (1/12) SHEET 1 VOLTAGE ( V ) PIN NO. Q1101 R1134 TU1101 TU1101 QAU0303-001 R1135 Q1103 Q1102 MAIN C/N_AFT1 Q1102 R1105 U/V FRONTEND GND GND...
  • Page 35 AV-48WP74 AV-56WP74 SHEET 11 SHEET 12 SHEET 12 SHEET 5 RECEIVER CN1005 QGB1505J1-15 RECEIVER CN1006 QGB1505J1-35 CN1006 TUNER TUNER BS_GEMV R1118 OPEN No.52105...
  • Page 36 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (2/12) SHEET 2 SHEET 12 TV_V1 SHEET 1 TV_V1 C0603 OPEN C0608 R0606 OPEN R0707 C0701 OPEN R0747 R0708 OPEN A3.3V OPEN SHEET 12 3.3V OPEN R0709 C0703 OPEN R0703 OPEN D0748 IC0702 OPEN...
  • Page 37 AV-48WP74 AV-56WP74 VOLTAGE ( V ) PIN NO. CN0DC 11.7 CN0SY CN10DC DIGITAL INPUT MODULE PWB C0703 OPEN D0702 OPEN R0705 R0711 R0712 R0743 OPEN OPEN IC0702 SDA0 OPEN OPEN Q0701 C0741 R0744 2SK1374-X OPEN OPEN MD0009 OPEN R0706 SCL0...
  • Page 38 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (3/12) SHEET 3 J2111 J2111 J2111 D2101 MA8100/M/-X C2102 D2217 NCB31HK-103X MA8100/M/-X R2102 J2111 C2103 QETN1HM-106Z S2_1 R2103 D2220 D2216 C2101 MA8100/M/-X MA8100/M/-X NCB11CK-105X C2104 /5 0 QETN1HM-106Z INPUT-1 R2104 D2215 J2101 MA8100/M/-X QNN0521-001...
  • Page 39 AV-48WP74 AV-56WP74 S2_1 LC2101 OPEN R2294 OPEN J1092 R2292 R2297 OPEN OPEN OPEN BSD_IR NOT USE BSD_IR R2293 OPEN R2295 OPEN D2260 D2261 OPEN OPEN J1091 QNS0001-001 R1097 SHEET 10 COMPU D1093 MA8082/M/-X S2_2 S2_1 D2206 S2_1 MA8100/M/-X SHEET 5...
  • Page 40 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (4/12) SHEET 4 R2310 C2301 OPEN R2301 OPEN LC2301 R2302 D2423 QQR1199-001 OPEN OPEN R2303 OPEN C2302 NCB11CK-105X R2304 OPEN J2131 OPEN LC2302 R2305 D2421 QQR1199-001 MA8100/M/-X C2303 R2306 OPEN NCB11CK-105X R2307 OPEN R2453...
  • Page 41 AV-48WP74 AV-56WP74 COMY1 COMY1 SHEET 7 COMPB1 COMPB1 COMPR1 COMPR1 COMY3 COMY3 SHEET 7 COMPB3 COMPB3 COMPR3 COMPR3 C1598 J2141 QNN0536-001 NCB11CK-225X COML5 C1599 D1598 AUDIO R1598 MA8100/M/-X 220k NCB11CK-225X MPB5 COMR5 D1599 R1599 MA8100/M/-X 220k SHEET 7 COMY5 COMY5...
  • Page 42 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (5/12) SHEET 5 R1582 Y_BSDGND SHEET 10 Y_BSDGND V_RT V_RT Y_BSD Y_BSD L_BSA L_BS Y1501 L_BSA OPEN L_BSD Y1502 L_BSD NOT USE V_BS V_BS R_BSA R_BS Y1503 R_BSA OPEN R_BSD Y1504 R_BSD C_BSD C_BSD...
  • Page 43 AV-48WP74 AV-56WP74 D1591 D1592 CN100H OPEN OPEN QGF1201C2-13 R1501 SCL0 R1502 SDA0 R1507 SUR_EFCT R1508 SUR_MONO R1504 SUR_SW R1509 BBE_SW FRONT RELAY PWB SHEET 23 IC1502 M62320FP- X S4_DET R1510 OPEN BBE_LO R1506 OPEN BLEV1 R1505 OPEN BLEV2 R1543 AMP_MU...
  • Page 44 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (6/12) SHEET 6 PIN NO. VOLTAGE ( V ) PIN NO. VOLTAGE ( V ) IC3001 IC3001-7 IC3001-13 IC3001-136 (3.3) 2.3Vp-p 2.1Vp-p 3.4Vp-p <MAIN > VOLTAGE ( V ) PIN NO. IC3002 C3078 L3003...
  • Page 45 AV-48WP74 AV-56WP74 VOLTAGE ( V ) VOLTAGE ( V ) PIN NO. PIN NO. 3001-136 IC3001-137 IC3001-157 IC3001-163 IC3001-169 Q3001 Q3501 Q3002 Q3502 Q3003 3.4Vp-p 3.3Vp-p 1.1Vp-p 0.6Vp-p 0.6Vp-p Q3505 Q3004 Q3506 Q3005 2DYCRY 2DYCBY R3049 Q3509 100k R3080 3.3V...
  • Page 46 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (7/12) SHEET 7 IC1301-35 IC1301-36 IC1301-38 IC1301-46 IC1301-48 IC1301-50 IC1301 1.5Vp-p 1.5Vp-p 2.1Vp-p 2.1Vp-p 1.0Vp-p 0.5Vp-p SHEET 12 SIGNAL C1325 C1324 C1318 R1346 OPEN SDA0 VGND SDA0 C1341 SHEET 10 SCL0 SCL0 R1347 D1301...
  • Page 47 AV-48WP74 AV-56WP74 VOLTAGE ( V ) VOLTAGE ( V ) VOLTAGE ( V ) VOLTAGE ( V ) PIN NO. PIN NO. PIN NO. PIN NO. IC1301 Q1301 Q1302 IC1301-50 IC1301-52 IC1301-57 Q1303 0.5Vp-p 0.7Vp-p 1.8Vp-p SHEET 8 COMSYNCY L1302...
  • Page 48 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (8/12) SHEET 8 SHEET 12 L1211 QQL25CK-100Z C1213 QETN1CM-107Z HDCP_H HDCP_H R1217 SHEET 4 OPEN HDCP_V HDCP_V R1218 8.2k SHEET 6 C1216 NCF11CZ-475X SYNC. SEP./ DETECT/ IC1211 TA1318N C1220 C1221 OPEN OPEN C1218 R1233...
  • Page 49 AV-48WP74 AV-56WP74 N1CM-107Z VOLTAGE ( V ) PIN NO. IC1211 475X IC1212 C1220 C1221 OPEN OPEN Q1232 C1218 CB11CK-105X AP_V AP_V R1227 OPEN R1226 SHEET 9 R1229 IC1212 3.3K TC7W08F-X R1228 R1235 2.2k OPEN AP_H AP_H C1219 NCF11CZ-475X R1231 MAIN_H...
  • Page 50 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (9/12) SHEET 9 C1853 D1851 OPEN OPEN CF1851 OPEN R1851 OPEN R1844 VOLTAGE ( V ) PIN NO. IC1703 OPEN AT24LC32-48WP74 IC1703 R1845 OPEN R1855 R1856 R1857 D1702 D1703 MA111-X MA111-X IC1851 OPEN C1854...
  • Page 51 AV-48WP74 AV-56WP74 BASS_MU CN100G QGF1201C2-17 HP_VOL MECA_SW REMO STBVCC ON_TIM POW_LED BS_5V BS_5V STB3.3V STB3.3V FRONT RELAY PWB STB_GND STB_GND SHEET 23 EE_CDS C1853 D1851 OPEN OPEN KEY1 CF1851 OPEN KEY2 R1851 OPEN R1883 OPEN SCL0 SDA0 R1844 OPEN LOB_POW...
  • Page 52 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (10/12) SHEET 10 CN1GN1 CN1GN2 OPEN OPEN DIST BASE BLOCK MI-COM & DIST M BS_8V BS8V C1408 BS8V OPEN BSDGND VOLTAGE ( V ) VOLTAGE ( V ) PIN NO. PIN NO. SHEET 12...
  • Page 53 AV-48WP74 AV-56WP74 CN1004-73 SHEET 12 CN1003 QGB1506L1-16 2.8Vp-p SCL0 CN1004-75 C1442 R1421 SDA0 R1423 3.3K D1403 MA111-X B1_POW NECK C1441 OSD_VD OPEN R1422 NECK POWER & DEF PWB(2/2) DEF_VP 2.0Vp-p EHT( DC) SHEET 20 D1402 UDZS5.1B-X V_SYNC CN1004-79 H_SYNC D1401...
  • Page 54 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (11/12) SHEET 11 SHEET 1 R6011 R6012 R6013 OPEN R6010 OPEN IC1621 OPEN C6002 C6001 R1629 C1630 C6003 C1623 OPEN OPEN OPEN R1628 OPEN C1624 OPEN C1621 C6004 IC6001 OPEN R1621 C1631 R1622 NJM2701M-X...
  • Page 55 AV-48WP74 AV-56WP74 PIN NO. VOLTAGE ( V ) PIN NO. VOLTAGE ( V ) IC6001 OPEN C1646 C1645 C6003 R1618 OPEN 29.5 C1642 C1643 C6004 0.047 0.033 / C1641 R1641 C1647 R1642 R1643 10.5 IC1641 14.1 Q1668 R6001 R6002 IC1641...
  • Page 56 AV-48WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (12/12) SHEET 12 POWER & DEF PWB(1/2) LINE FILTER PWB SHEET 11 SHEET 19 SHEET 21 SHEET 10 CN100F F QJB003-044214 CN1001 QGB1506L1-16 Y1821 D1802 MA111-X IC1991 PQ12RD11 H1991 R1841 Q1841 OPEN OPEN OPEN...
  • Page 57 AV-48WP74 AV-56WP74 R & DEF B(1/2) LINE FILTER PWB EET 19 SHEET 21 SHEET 10 CN100F F QJB003-044214 CN1001 QGB1506L1-16 Y1821 SHEET 1 D1802 MA111-X SHEET 9 STBVCC SHEET 10 LB_PRO Q1841 OPEN R1801 OPEN SHEET 9 STB_3.3V R1842 OPEN...

  • Page 58: Receiver Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 RECEIVER PWB CIRCUIT DIAGRAM SHEET 13 R0117 Q0103 Q0102 TU0101 OPEN AFT2 R0118 R0705 R0704 D0701 Q0702 R0109 3.3K R0706 100K GND2 Q0701 R0707 CN00DC R0108 OPEN OPEN GND2 GND2 R0107 UD0101 R0110 R0701 OPEN R0115 OPEN TV_V2...
  • Page 59 AV-48WP74 AV-56WP74 FOR TEST CN00S3 QGA2501F1-03 GND1 R0209 R0210 D0201 D0202 MA8082/M/-X MA8082/M/-X GND1 GND1 00DC R0213 R0212 OPEN R0214 3.9k C0218 R0211 3.3k C0221 C0220 C0217 C0219 C0214 .0027 C0222 C0213 C0223 C0212 C0224 C0211 R0217 0.022 OPEN SCL2...

  • Page 60: R Crt Socket Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 R CRT SOCKET PWB CIRCUIT DIAGRAM SHEET 14 R CRT SOCKET PWB IC1101 TDA6111Q SSB-3168A-M2 H1101 LC31150-002A L1002 C1104 C1102 QQL26AJ-102Z OPEN 0.01 R1109 OPEN R1106 C1103 C1101 L1102 R1105 D1103 OPEN OPEN R1102 C1105 CN1RGK 2.2k QGA2501C5-06Z...
  • Page 61 AV-48WP74 AV-56WP74 R1108 R CRT BC SA QRC121K-561Z PICTURE HEATER L1101 OPEN TUBE D1101 R1107 EU01N-T2 G1 G2 G3 CRT SOCKET SG1001 SK2001 QNZ0464-001 QAF0056-501Z C1005 OPEN R1006 R1008 R1005 QRC121K-102Z CN1RSC QRC121K-152Z QGZ0017C1-01Z TP-ER D1001 C1007 RM2C-LFA1 /250 GND_DEF...

  • Page 62: G Crt Socket Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 G CRT SOCKET PWB CIRCUIT DIAGRAM SHEET 15 R CRT SOCKET PWB B CRT SOCKET PWB SHEET 14 SHEET 16 CN2RGK CN2GBK QJB003-062211 QGA2501C5-06Z CN200E QGA2501C1-10 IC2101 TDA6111Q Y2003 OPEN H2101 MI-COM LC31150-002A DIST MODULE VM( GND) L2002...
  • Page 63 AV-48WP74 AV-56WP74 G CRT SOCKET PWB SSB-3268A-M2 L2101 G CRT BC SA QQL244K-5R6Z GEND PICTURE R2108 HEATER TUBE QRC121K-561Z R2107 D2101 EU01N-T2 G2 G3 SG2001 CRT SOCKET C2005 QAF0056-501Z SK2001 OPEN QNZ0464-001 R2006 1.5K R2008 CN2GSC R2005 QGZ0017C1-01Z QRC121K-102Z QRC121K-152Z...

  • Page 64: B Crt Socket Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 B CRT SOCKET PWB CIRCUIT DIAGRAM SHEET 16 B CRT SOCKET PWB IC3101 TDA6111Q SSB-3368A-M2 H3101 LC31150-002A L3002 C3102 C3103 C3101 QQL26AJ-102Z 0.01 R3109 OPEN R3106 C3104 C3109 OPEN L3102 D3103 R3105 MA111-X C3105 CN3GBK R3102 QJB003-062211 3.3k...
  • Page 65 AV-48WP74 AV-56WP74 B CRT BC SA L3101 QQL244K-5R6Z PICTURE GEND HEATER TUBE D3101 R3107 EU01N-T2 G1 G2 G3 CRT SOCKET SG3001 QAF0056-501Z SK3001 C3005 QNZ0464-001 OPEN R3006 CN3BSC R3008 R3005 1.5K QGZ0017C1-01Z QRC121K-102Z QRC121K-152Z TP-EB CN30BE D3001 QGZ5003C1-02 RM2C-LFA C3007...

  • Page 66: Vm Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 VM PWB CIRCUIT DIAGRAM SHEET 17 CN700J QGA2501C5-05Z POWER & DEF PWB(1/2) SHEET 20 K7101 CE41492-001Z R7106 1.5k Q7102 2SC1627A/OY/-T R7101 Y7101 CN700V Q7101 QJB003-031413 2SD601A/QR/-X G CRT SOCKET PWB LC7101 C7101 OPEN 0.01 SHEET 15 C7002 C7119...
  • Page 67 AV-48WP74 AV-56WP74 FR7001 QRZ9021-561 C7001 R7118 C7114 /160 R7108 Q7103 OPEN OPEN /OY/-T R7114 C7105 1.2k R7109 C7106 OPEN OPEN C7108 R7119 D7102 CN7RAM OPEN RH1S-T3 QGA2501C5-03Z 1/2W C7112 0.0047 /500 Q7105 2SA1837 H7101 CEHP00N-001Q R7112 Q7104 C7109 R7115 OPEN...

  • Page 68: Def Osc Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 DEF OSC PWB CIRCUIT DIAGRAM SHEET 18 POWER & DEF PWB(1/2) SHEET 19 NOT USE CN010 VOLTAGE ( V ) VOLTAGE ( V ) CN0S4 PIN NO. PIN NO. QGB1505K1-35 QGA2501F1-03 IC101 DGND DGND R138 11.6 OPEN OSD_VD...
  • Page 69 AV-48WP74 AV-56WP74 POWER & DEF PWB(1/2) SHEET 19 L105 QQL01BK-101Z IC163 Y008 AN7805F OPEN Y005 C162 OPEN C184 C164 C185 R216 OPEN OPEN R217 C161 1000 Y007 V_DRIVE C183 C163 OPEN _DRIVE R162 DGND R161 C165 C212 D170 1SS355-X IC212...
  • Page 70 AV-48WP74 AV-56WP74 POWER & DEF PWB CIRCUIT DIAGRAM(1/2) SHEET19 T921-9 T921-12 T921-14 T921-15 60Vp-p 60Vp-p 60Vp-p 24Vp-p Y908 OPEN .0047 AC250V C998 QCZ9074-472 Y905 C993 .0047 AC250V QCZ9074-472 OPEN Y907 Y904 GND1 Y906 CN00B LINE FILTER PWB C994 .0047 C997...
  • Page 71 AV-48WP74 AV-56WP74 T921-15 T921-17 T921-22 POWER & DEF PWB(2/2) SHEET 20 24Vp-p 32Vp-p 10Vp-p PROTECT 28V/10V B1_POW STBVCC CN001 R954 D954 D953 QGB1506M1-16 1/2W * C952 RELAY 1SS244-T2 1SS133-T2 OPEN R953 1/2W* R985 GND1 28V/10V OPEN D974 OPEN R952 R951 2.2k...

  • Page 72: Power & Def Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 POWER & DEF PWB CIRCUIT DIAGRAM(2/2) SHEET 20 MAIN PWB DEF OSC PW SHEET 10 SHEET 18 CN003 QGB1506M1-16 CN010 QGB1505J1-35 Y585 Y502 IC401 OPEN LA7876NZ R423 OPEN R415 R424 OPEN 150k B1_POW R427 MTZJ75-T2 C406 D401 R428...
  • Page 73 AV-48WP74 AV-56WP74 DEF OSC PWB IC401-3 IC401-4 IC401-6 IC401-8 IC401-9 IC401-10 SHEET 18 100Vp-p 60Vp-p 0.35Vp-p 30Vp-p 30Vp-p 60Vp-p R404 R405 6.8k 6.8k IC401 1/4W,1 % 1/4W,1% LA7876NZ H401 LC31695-001A CN0AB QGZ8001C1-03 R407 R406 R701 R703 L701 4.7k 1/4W,1% D403...

  • Page 74: Line Filter Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 LINE FILTER PWB CIRCUIT DIAGRAM SHEET 21 Y9901 C9903 Y9902 F9901 OPEN 125V LF9901 OPEN QMF61U1-7R0-S QQR0972-002 QFZ9072-104 C9901 125V QFZ9072-104 Y9903 OPEN CN90PW VA9901 QMPD390-200-JS C9902 LF9903 ERZV10V621CS 125V QQR1281-001 Y9904 QFZ9072-104 OPEN Y9913 OPEN T9911 QQT0361-001 R9901 2.7M...
  • Page 75 AV-48WP74 AV-56WP74 CN900W OPEN LF9902 QQR0972-002 POWER & DEF PWB(1/2) SHEET19 CN900B QGA7901C1-02 D9912 D9911 1SR35-400A-T2 1SR35-400A-T 2 MAIN PWB SHEET 12 C9911 D9913 1000 QETN1CM-108Z 1SR35-400A-T2 D9914 1SR35-400A-T CN900F QGA2501C5-04Z C9921 Y9911 1000 Y9912 QETM1HM-108 K9911 OPEN QUY153-050Y R9911...
  • Page 76 AV-48WP74 AV-56WP74 CONVERGENCE OUT PWB CIRCUIT DIAGRAM SHEET 22 CN011-2 MICOM & DIST MODULE PWB CN00Y QJB003-114621 5Vp-p CN011-3 STK392 R828 Q806 2SD601A/QR/-X R831 R829 Q807 2SD601A/QR/-X 5Vp-p R830 Q808 R832 2SD601A/QR/-X CN012 QGB2501J1-15 R833 DIG.R DIG.G DIG.B K810 QQR0621-002Z...
  • Page 77 AV-48WP74 AV-56WP74 H004 LC31881-001A IC804 STK392-110 C819 C818 R803 2.7k C825 C829 150p 150p NDC31HJ-151X R839 R843 D816 NDC31HJ-151X RD33E/B2/-T2 2WOMR R805 2.7k R840 D817 C820 R842 3.3k RD33E/B2/-T2 150p R CONVERGENCE R834 1WMFR YOKE NDC31HJ-151X CN0RI CYH+ R806 2.7k...

  • Page 78: Front Relay Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 FRONT RELAY PWB CIRCUIT DIAGRAM SHEET 23 FRONT RELAY PWB SSB0L268A-M2 CN000H QGF1201C2-13 CN00BH QGA2501C1-13 STB3.3V ONTIMER C4_GND Y4_GND S4_DET V4_GND Y0001 OPEN MAIN PWB(5/12) SHEET 5 L4_GND R4_GND CN000G QGF1201C2-17 BASS_MU HP_VOL MECA_SW REMO CN00BG QGA2501C1-09 STBVCC...

  • Page 79: Remocon Sensor Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 REMOCON SENSOR PWB CIRCUIT DIAGRAM SHEET 23 PIN NO. VOLTAGE ( V ) IC8001 IC8002 IC8001 GP1UM281QK OPEN R8002 C8001 CN800R R8001 OPEN QGA2501C5-04Z NCB31CK-104X REMOCON R8003 STB_5V D8001 MA3068/M/-X R8004 C8002 FRONT CONTROL PWB SHEET 24 REMOCON SENSOR PWB SSB-8068A-M2 No.52105...

  • Page 80: Front Control Pwb Circuit Diagram

    AV-48WP74 AV-56WP74 FRONT CONTROL PWB CIRCUIT DIAGRAM SHEET 24 Y4IN J0401 C0445 QMCC004-C0 1 R0404 Y4IN_GND J0401 C0446 QNZ0438-001 C4IN C4IN_GND R0405 LC0401 LC0403 LC0404 Y0401 R0412 LC0402 R0416 OPEN R0406 OPEN OPEN OPEN R0419 V4IN R0401 Y0402 C0444 R0411...
  • Page 81 AV-48WP74 AV-56WP74 FRONT CONTROL PWB SSB0L068A-M2 J0401 QNZ0438-001 Y0401 VIDEO 4 J0401 Y0402 QNN0370-001 Y0410 J0401 QNN0370-001 Y0411 J0401 QNZ0438-001 PIN NO. VOLTAGE ( V ) IC0702 -003Z QSW0619-003Z QSW0619-003Z S0705 S0706 Q0701 R0749 QSW0619-003Z QSW0619-003Z Q0702 CN000X S0702 S0703...

  • Page 82: Pattern Diagrams

    AV-48WP74 AV-56WP74 PATTERN DIAGRAMS MAIN PWB PATTERN [SOLDER SIDE] R6001 C6003 R1656 D1671 C1674 R1690 R1644 IC1641 D1670 R6011 C1679 C1648 R1679 R1672 R1671 C1671 R1696 C1687 R1660 R1669 C1680 R1695 R1697 C1688 D1662 R1659 D1663 C1646 C1678 C1691 R6004...
  • Page 83 AV-48WP74 AV-56WP74 D1891 R6001 C6003 Q1102 R1702 D1894 R1105 R1122 R1703 Q1103 D1893 R1123 R1104 6011 R1892 R1119 D1892 C1501 C1702 R1894 R1895 R1896 R1897 R1121 R1120 C1624 TU1101 R1133 D1102 C1502 C1623 C1102 C1110 J1091 C1104 L1101 C1103 D1101...
  • Page 84 AV-48WP74 AV-56WP74 MAIN PWB PATTERN [PARTS SIDE] IC1703 TU1101 C6003 R1543 R1505 C6004 C6009 C6007 IC1502 C1502 C6008 C1104 L1101 D1592 C1103 C0608 C1101 C1109 C0801 C6010 C1634 C1102 C0603 CN1005 L1102 CN1006 L0501 J1092 D2210 R1714 C0701 Q1713 C0703...
  • Page 85 AV-48WP74 AV-56WP74 Q1671 C6003 R1675 R1691 C6004 R1677 C1674 D1667 D1668 R1672 R1671 C6009 Q1673 C6007 C1648 C1679 R1613 Q1672 C1677 C1678 C6008 C1680 R1620 R1619 C1647 C6010 C1695 R1674 R1673 C1691 R1616 R1609 C1694 Q1664 R1699 C1693 Q1663 C1689...

  • Page 86: Receiver Pwb Pattern

    AV-48WP74 AV-56WP74 RECEIVER PWB PATTERN [SOLDER SIDE] FRONT 2-58 No.52105...
  • Page 87 AV-48WP74 AV-56WP74 RECEIVER PWB PATTERN [PARTS SIDE] CN0701 C0217 C0210 C0218 FRONT C0219 C0203 C0226 C0201 C0701 C0601 RY0602 C0108 R0607 RY0601 R0610 C0501 C0602 IC0561 C0561 C0531 C0562 C0106 J0501 J0601 No.52105 2-59...

  • Page 88: R Crt Socket Pwb Pattern

    AV-48WP74 AV-56WP74 R CRT SOCKET PWB PATTERN R1031 Q1031 C1005 R1006 C1101 W1013 C1102 H1101 C1103 R1105 R1101 C1104 R1102 D1001 R1110 TP-ER R1008 R1106 C1006 C1107 W1002 L1102 G CRT SOCKET PWB PATTERN W2001 W2005 R2006 C2005 C2101 W2013...

  • Page 89: B Crt Socket Pwb Pattern

    AV-48WP74 AV-56WP74 B CRT SOCKET PWB PATTERN R3031 Q3031 C3005 R3006 C3101 W3013 H3101 C3102 C3103 C3109 R3101 C3104 R3105 R3102 D3001 R3110 TP-EB C3006 R3106 C3107 W3002 L3102 No.52105 2-61...

  • Page 90: Vm Pwb Pattern

    AV-48WP74 AV-56WP74 VM PWB PATTERN FRONT FR7001 H7101 R7119 C7103 R7118 C7120 R7103 Y7101 R7114 C7101 Y7102 Q7104 R7124 R7111 C7119 C7107 C7102 H7102 C7112 Q7101 C7002 C7109 W7401 R7115 C7108 R7112 K7104 K7101 R7108 R7109 D7103 C7110 C7106 W7402...

  • Page 91: Def Osc Pwb Pattern

    AV-48WP74 AV-56WP74 DEF OSC PWB PATTERN C137 R182 C136 Y002 CL014 C177 R172 R181 Q132 R142 IC162 R133 C167 Q131 C131 C138 R137 R139 C134 R168 Q162 R179 C121 W306 R178 R177 R186 C171 R164 R121 R163 C118 IC101 R120...

  • Page 92: Power & Def Pwb Pattern

    AV-48WP74 AV-56WP74 POWER & DEF PWB PATTERN CN002 W223 W225 CN001 W628 W451 R957 D955 W226 W450 Y942 W626 D973 W445 R428 R955 R528 Y945 Y937 W439 W629 W625 C971 Y502 W624 W436 W623 Y584 R973 D974 W622 W434 R985...
  • Page 93 AV-48WP74 AV-56WP74 Q402 D583 R419 C409 W223 W225 W224 W628 W451 C410 R416 W222 Y403 W627 W226 W626 W447 R420 Q401 R402 R418 W445 R428 R411 CN003 R528 W219 R421 W439 C411 W218 Y582 R410 R413 C413 D403 W625 C404...

  • Page 94: Line Filter Pwb Pattern

    AV-48WP74 AV-56WP74 LINE FILTER PWB PATTERN F9901 Y9901 Y9902 Y9913 Y9904 Y9903 R9901 VA9901 CONVERGENCE OUT PWB PATTERN FRONT W401 W403 CN011 CN012 K801 R868 D812 IC806 W419 D811 W204 W418 W417 W606 D828 K808 W605 W407 W408 Q811 R869...
  • Page 95 AV-48WP74 AV-56WP74 FRONT Y9901 Y9902 C9901 Y9904 Y9903 D9914 D9912 R9901 D9921 C9921 K9911 R9911 Y9912 FRONT H005 H004 C838 W612 C822 R836 IC805 IC804 C832 R860 C850 W615 W411 W412 C834 C846 W616 D832 C845 C849 D831 R852 W617...

  • Page 96: Front Relay Pwb Pattern

    AV-48WP74 AV-56WP74 FRONT RELAY PWB PATTERN Y0001 W0010 W0007 FRONT REMOCON SENSOR PWB PATTERN IC8002 IC8001 W8001 R8004 R8003 R8001 2-68 No.52105...

  • Page 97: Front Control Pwb Pattern

    AV-48WP74 AV-56WP74 FRONT CONTROL PWB PATTERN D0701 R0711 R0706 W0020 W0017 W0014 D0703 W0019 W0016 W0013 D0704 S0701 S0707 R0707 W0034 W0033 W0026 W0025 W0011 W0024 W0010 R0748 R0751 R0750 R0704 R0749 W0032 W0031 S0702 S0706 S0705 S0704 S0703 IC0702...
  • Page 98 AV-48WP74 AV-56WP74 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. www.jvcservice.com(US Only) JVC CANADA INC. Head office : 21 Finchdene Square Scarborough, Ontario M1X 1A7 (416)293-1311 (No.52105) Printed in Japan 20034WPC...

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