Sanyo DS25520 Manual
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Sanyo DS25520 Manual

Sanyo DS25520 Manual

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Download this manual See also: Service Manual, Owner's Manual
Notice
CORRECTION
SERVICE FLASH
Please add this notice to the Service Manual listed below.
COLOR TELEVISION
:
Category
DS25520
Model:
U.S.A.
Destination:
NOTE: Match the Chassis No. on the unit's back cover with the Chassis No. in the Service
Manual. If the Service Manual Chassis No. does not match the unit's, additional Service
Literature is required. This chassis is similar to Chassis No. 25520-00. Only the
difference Service Information is given in this manual. For detailed Service Information,
refer to the Original Service Manual and Notices for Chassis No. 25520-00 used in Model
DS25520 (SM780078).
1. IN THE ACCESSORY PARTS LIST
The reason for change.
A : Misprint
B : Quality Reliability
D : Design
E : Add as a possible sub
G : Purchasing Request
Page &
KEY
Section
NO.
Page 21,
Chassis
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Electrical
Parts List
DS25520, G7LAM, PRODUCT CODE 111358880
PRODUCTION CHANGE
ADD INFORMATION
REF : No.
Part No.
645 048 1352
Old
610 290 1283
610 290 1344
New
610 290 1405
Date:
Effective from : Chassis No.
SM780078
C : Standardization
F : Schematic location change
Description
RC BATTERY COVER
RC BATTERY COVER
RC BATTERY COVER
RC BATTERY COVER
AS
FILE NO.
REVISION 5
January / 15 / 2005
25520-00
Interchange-
Q'ty
Reason
ability
1
NO
1
NO
SM780078-05
REFERENCE No.
A

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Summary of Contents for Sanyo DS25520

  • Page 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Electrical Parts List 610 290 1344 RC BATTERY COVER 610 290 1405 RC BATTERY COVER SM780078-05 REFERENCE No. DS25520, G7LAM, PRODUCT CODE 111358880...
  • Page 2 For parts or service contact SANYO Fisher Service Corporation 21605 Plummer Street Chatsworth, CA 91311 (U.S.A.) 300 Applewood Crescent, Concord, Ontario L4K 5C7 (CANADA) January / 2005 / 2000 SMC Printed in U.S.A.

  • Page 3: Table Of Contents

    If the Service Manual Chassis No. does not match the unit’s, additional Service Literature is required. This chassis is similar to Chassis No. 25520-00, however, all Service Information is given in this Notice for Chassis No. 25520-04 used in Model DS25520. Specifications Contents Power Rating .

  • Page 4: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS WARNING: The chassis of this receiver has a floating READING SHOULD NOT EXCEED 750 mV. AC VOLTMETER ground with the potential of one half the AC line voltage in (5000 ohms per volt or more sensitivity) respect to earth ground.

  • Page 5: Service Adjustments

    SERVICE ADJUSTMENTS GENERAL This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments. To enter the Service Menu, first disconnect the AC power cord. Then while pressing the MENU key on the front control panel, recon- nect the AC power cord.
  • Page 6 Table 1. ON-SCREEN SERVICE MENU When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be checked and be set up or readjusted according to the procedures described in the following pages. Initial Setup Data marked with an * should be changed from Initial Reference Data.
  • Page 7 Table 1. ON-SCREEN SERVICE MENU (Continued) When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be checked and be set up or readjusted according to the procedures described in the following pages. Initial Setup Data marked with an * should be changed from Initial Reference Data.
  • Page 8 SERVICE ADJUSTMENTS (Continued) DRIVE / BIAS ADJUSTMENTS PROGRAM CODES Note 3. Red/Blue Drive Adjustments in Service Menu NO. The microprossesor used in this model is a multi-purpose 72 DRV: Adjust Red and Blue Drive Levels alternately with type and is used in several different models. To ensure 1, 3, 7, and 9 keys on the remote control.
  • Page 9 ANTENNA CONNECTIONS VCO ADJUSTMENT This receiver is designed for UHF/VHF reception. A 75 ohm Note: VCO must be adjusted after IC101 (Signal Processor), terminal is provided for UHF and VHF receptions. When IC802 (EEPROM) or T151 (VCO Coil) is replaced. connecting a CATV antenna system, connect the 75 ohm 1.
  • Page 10 SERVICE ADJUSTMENTS (Continued) GRAYSCALE ADJUSTMENT BRIGHTNESS LEVEL ADJUSTMENT 1. Set the picture controls to the Sports levels or Reset Note: Grayscale, RF AGC, Video Level, and High Voltage Check (use MENU key and key or RESET key). must be adjusted before attempting Brightness Level 2.
  • Page 11 SOUND ADJUSTMENT SEPARATION ADJUSTMENT 1. Connect a color-bar generator to the antenna terminals 7. Turn off the receiver and disconnect the AC power cord with audio signal of 1KHz at 100% modulation. (AC 120V line). 2. Set the picture controls to the Sports levels 8.

  • Page 12: Purity And Convergence

    PURITY AND CONVERGENCE ADJUSTMENTS CAUTION: The Purity and Convergence adjustments have been made at the factory. Readjustments should be made only after the picture tube or deflection yoke is replaced. Follow the steps below for necessary readjustments. PURITY ADJUSTMENTS 1. When replacing picture tube or deflection yoke, mount deflection yoke and purity and convergence magnets DEFLECTION YOKE assembly properly.

  • Page 13: Convergence Adjustment

    CONVERGENCE ADJUSTMENT CENTER CONVERGENCE ADJUSTMENT OUTER AREA CONVERGENCE ADJUSTMENT 1. Connect a crosshatch generator to antenna terminals. The outer area convergence is performed by positioning of 2. Set Contrast to low level to eliminate blooming. Reduce the yoke as follows: Brightness level to obtain black background if necessary.

  • Page 14: Service Hints

    SERVICE HINTS POWER FAILURE DETECTOR This unit is equipped with a Power Failure Detector function included in the CPU which checks for an abnormal condition in the chassis power supplies, including the power supply derived from the Horizontal Output Transformer. If, while the power is on, a failure is caused by any of the following that results in a low voltage supply, the CPU will turn the unit off in 1.5 seconds to prevent unnecessary damage: •...

  • Page 15: Mechanical Disassemblies

    MECHANICAL DISASSEMBLIES CHASSIS REMOVAL CABINET BACK REMOVAL 1. Remove cabinet back. 1. Refer to Figure 1, remove 8 screws. 2. Discharge the picture tube anode (2nd anode lead) to the 2. Pull off cabinet back and remove. dag coating (picture tube grounding lead). 3.

  • Page 16: Chassis Electrical Parts List

    CHASSIS ELECTRICAL PARTS LIST CAUTION: To Protect against electrical shock and for continued product safety, refer to SAFETY PRECAUTIONS, X-RADIATION PRECAUTIONS, HIGH VOLTAGE HOLD-DOWN TEST, and PRODUCT SAFETY NOTICE on Page 2. PRODUCT SAFETY NOTICE PRODUCT SAFETY SHOULD BE CONSIDERED WHEN A REPLACEMENT IS MADE IN ANY AREA OF A RECEIVER. COMPONENTS INDICATED BY A STAR ( ) IN THIS PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE.
  • Page 17 Schematic Schematic Part No. Part No. Description Description Location Location C285 403 224 6108 CERAMIC 0.01U K C631 404 088 2909 CERAMIC 1000P M 250V C401 404 084 3306 ELECT 470U M 404 088 7102 CERAMIC 1000P M 250V C402 403 224 6108 CERAMIC 0.01U K...
  • Page 18 Schematic Schematic Part No. Part No. Description Description Location Location D624 407 106 2806 DIODE RU3YX C3436 403 086 0108 NP-ELECT 4.7U M D625 407 129 7000 DIODE RU4AM LF-L1 C3437 404 084 4204 ELECT 4.7U M 407 211 5808 DIODE FE201-6L43 C3439 403 086 0108...
  • Page 19 Schematic Schematic Part No. Description Part No. Description Location Location L623 610 078 5946 PIPE, CORE Q401 405 018 0507 TR 2SC3332-R 652 000 1725 CORE, PIPE 405 018 0606 TR 2SC3332-S L625 610 078 5946 PIPE, CORE Q402 406 017 4602 TR TT2168LS-YB11 652 000 1725 CORE, PIPE...
  • Page 20 Schematic Schematic Description Description Part No. Part No. Location Location Q711 (Cont.)405 067 0107 TR 2SC2688(1)-M R006 401 014 4105 CARBON 1.5K JA 1/4W 406 000 3605 TR 2SC3620(LB-SAN-1) R013 401 027 2600 CARBON 5.6K JA 1/6W Q721 405 041 6507 TR 2SC2621-D-RA R106 401 008 2001...
  • Page 21 Schematic Schematic Part No. Description Part No. Description Location Location R491 401 012 5708 CARBON 1K JA 1/4W R726 401 009 1508 CARBON 2.7K JA 1/2W R727 401 065 4604 OXIDE-MT 12K JA R492 401 156 8504 MT-FILM 33K FA 1/6W R493 401 019 4001 CARBON...
  • Page 22 Schematic Schematic Part No. Part No. Description Description Location Location R1906 401 162 4101 MT-GLAZE 5.6K JA 1/10W CRYSTAL/FILTERS R1907 401 256 0408 MT-GLAZE 12K JA 1/10W X141 421 008 9008 SAW F TSF5235P R1909 401 024 7004 CARBON 1K JA 1/6W X161 610 015 3059 TRAP, CERAMIC 4.5MHZ...

  • Page 23: Cabinet Parts List

    412 036 1805 SCREW 4X14 (7 USED) OR 411 078 1101 SCREW 4X14 (7 USED) 412 018 8402 SCREW 3X10 (1 USED) 610 296 9610 BUTTON UNIT 610 285 1199 CAP RC 610 293 2560 SANYO BADGE-LARGE (SILVER) — 21 —...

  • Page 24: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD PARTS SIDE CAUTION FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE 4A, 125V FUSE. ATTENTION : POUR MAINTENIR LA PROTECTION CONTRE LES RISQUES D’ INCENDIE UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE 4A, 125V.
  • Page 25 MAIN BOARD FOIL SIDE MENU CH-DN CH-UP VOL-DN VOL-UP POWER A1901 R1904 R1902 R1905 SW1906 R1907 SW1905 SW1904 SW1903 SW1902 SW1901 K1011 R1903 R1906 J1901 RL601 R3406 C3403 C3406 C3402 C3407 R3402 LF601A R3407 LF601B LF601 R627 PS601 KD1P KD2P C3422 C3421 C3423...
  • Page 26 PIC TUBE SOCKET BOARD COMPONENTS Part Loc. Q701 Q711 Q721 For parts or service contact SANYO Fisher Service Corporation 21605 Plummer Street Chatsworth, CA 91311 (U.S.A.) 300 Applewood Crescent, Concord, Ontario L4K 5C7 (CANADA) April / 2003 / 2000 SMC Printed in U.S.A.

  • Page 27: Block Diagram

    MODEL DS25520 Chassis No. 25520-04 WAVEFORMS CAUTION FOR CONTINUED PROTECTION AGAINST SCHEMATIC DIAGRAMS A RISK OF FIRE, REPLACE ONLY WITH Note: Voltages were measured with offset color-bar signal and controls set for normal picture. THE SAME TYPE 4A, 125V FUSE.
  • Page 28 MODEL DS25520 Chassis No. 25520-04 TUNER C1051 16EM22LBWA Y IN A101 K1051 F1BAM0280 D1051 R1051 :F1BAM0290 S/COMP SW 1/10GJ75C C IN AV1/AV2 SW C1052 R1082 R1081 1/10GJ22KC 1/10GJ22KC KK0.01LZB R1052 S-VIDEO OUT D1052 15 16 1/10GJ75C 17 18 R1004 R1007...
  • Page 29 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 414 007 7000 CRT A63AFW32X SM780078-01 REFERENCE No. DS25520, G7LBM, PRODUCT CODE 111358880...
  • Page 30 For parts or service contact SANYO Fisher Service Corporation 21605 Plummer Street Chatsworth, CA 91311 (U.S.A.) 300 Applewood Crescent, Concord, Ontario L4K 5C7 (CANADA) April / 2002 / 2000 SMC Printed in U.S.A.

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