Sanyo Vizzon HT27547 Service Manual
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Sanyo Vizzon HT27547 Service Manual

Remote control digital color television
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See also: Owner's Manual

SERVICE MANUAL

Servicing should be performed by only trained and qualified service personnel.
Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . 3 - 12
Service Hints . . . . . . . . . . . . . . . . . . . . . . 13
Mechanical Disassemblies. . . . . . . . . . . 14
Chassis Electrical Parts List . . . . . . 15 - 25
Cabinet Parts List . . . . . . . . . . . . . . . . . . 26
Component and Test Point
Locations . . . . . . . . . . . . . . . . . . . 27 - 30
Block Diagrams . . . . . . . . . . . . . . . . 31 - 35
Troubleshooting Flow Charts . . . . . 36 - 38
Control Port Function . . . . . . . . . . . . . . . 39
Schematic Inserts . . . . . . . . . . . . . . 41 - 48
Schematic Notes . . . . . . . . . . . . . . . . . 41
Waveforms. . . . . . . . . . . . . . . . . . 41 - 43
Pin Layouts. . . . . . . . . . . . . . . . . . 42 - 43
Capacitor and Resistor Codes . . 43 - 44
CRT Socket Board. . . . . . . . . . . . 45 - 46
Front Board . . . . . . . . . . . . . . . . . . . . . 45
AV Switching / Video Board . . . . 45 - 47
Main Board. . . . . . . . . . . . . . . . . . 46 - 48
HT27547, H3DSA, PRODUCT CODE 113007988
with a double "Z" is a registered trademark
of Sanyo Manufacturing Corporation.
Remote Control Digital
Color Television
AS
FILE NO.
HT27547
ORIGINAL VERSION
Chassis No. 27547-02
NOTE: Match the Chassis No. on
the unit's back cover with
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit's, additional Service
Literature is required. You
must refer to "Notices" to the
Original Service Manual
prior to servicing the unit.

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
85W (Avg), 2.5A (Max)
Antenna Input Impedance . . . . . . . . . . . . . . . . . 75Ω
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
01, 14 - 94, 95 - 125 (CATV)
Remote Ready . . . . . . . . . . 32 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 1.0 W/CH
Intermediate Frequency
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Picture Tube . . . . . . . . . . . . . . . . . A68QFN793X001
Semiconductors
Integrated Circuits . . . . . . . . . . . . . . . . . . . . . . . 13
Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Except within Tuners, RC Pre-Amp. & Digital Module
Cabinet Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 770 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585 mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 496 mm
REFERENCE No.
(U.S.A.)
(CANADA)
UHF/VHF/CATV
Digital
14 - 69 (UHF),
1 - 99 (Digital)
SM
780140

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Summary of Contents for Sanyo Vizzon HT27547

  • Page 1: Table Of Contents

    “Z” is a registered trademark of Sanyo Manufacturing Corporation. FILE NO. SERVICE MANUAL Remote Control Digital HT27547 Color Television (U.S.A.) (CANADA) ORIGINAL VERSION Chassis No. 27547-02 NOTE: Match the Chassis No. on the unit’s back cover with the Chassis No.

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS PRODUCT SAFETY NOTICE WARNING: The chassis of this receiver has a floating ground with the hen replacing components in a receiver, always keep in mind potential of one half the AC line voltage in respect to earth ground. the necessary product safety precautions.

  • Page 3: 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 Volume – key on the front control panel, reconnect the AC power cord.

  • Page 4: Service Adjustments

    SERVICE ADJUSTMENTS (Cont.) INITIAL BUS DATA SETUP (Cont.) 8. Select NO. 4C RD (Red Drive) with L or M key. Adjust the data with + or – key for 50. 9. Select NO. 4D GD (Green Drive) with L or M key. Adjust the data with + or – key for 0A. 10.
  • Page 5 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 6 SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY ECB4ECT 01100011 E/W Corner Bottom(7~4) E/W Corner Top (3~0) EWS7ETS3HSC 10000100 E/W Correction Sw(7) E/W Test (5~3) H Size Comp (2~0) ↓...
  • Page 7 SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY 4AVP1HP 00000000 4:3 CRT AV/Comp Pix H Phase (4~0) 4AVP1VST 00000000 4:3 CRT AV/Comp Pix1 V Shift (3~0) 4AVP2VS 11011111 4:3 CRT AV/Comp Pix2 V Size (6~0)
  • Page 8 DRIVE AND BIAS ADJUSTMENTS PROGRAM CODES The microprossesor used in this model is a multi-purpose Note 1. type and is used in several different models. To ensure Red/Blue Drive Adjustments in Service Menu DRV: Adjust proper operation and the correct features for your particu- Red and Blue Drive Levels alternately with 1, 3, 7, and 9 lar model, the program codes must be correct.
  • Page 9 SERVICE ADJUSTMENTS (Continued) VERTICAL SIZE ADJUSTMENT ANTENNA CONNECTIONS 1. Tune receiver to an active analog channel. This receiver is designed for UHF/VHF and Digital RF recep- tion. A 75 ohm terminal is provided for UHF/VHF/Digital RF 2. Check the vertical size of the picture. If the vertical size reception.

  • Page 10: Purity And Convergence Adjustments

    FOCUS ADJUSTMENT GRAYSCALE ADJUSTMENT 1. Set the picture controls to the Auto levels or Reset (use Adjust focus control (T402) for well defined scanning lines. MENU key and L or M key or RESET key). 2. Turn off the receiver and disconnect the AC power cord HIGH VOLTAGE CHECK (120V AC line).
  • Page 11 SERVICE ADJUSTMENTS (Continued) SUB COLOR AND SUB HUE ADJUSTMENT MULTI-SOUND SECTION ADJUSTMENTS Note: Multi-Sound Section must be adjusted after Sub Color A101 (U/V Tuner), IC3401 (MTS Decoder), Digital 1. Connect a color-bar generator to the analog antenna Module or IC802 (EEPROM) is replaced. terminal.
  • Page 12 OSD ADJUSTMENT PINCUSHION CORRECTION ADJUSTMENT 1. Connect a color-bar generator to the analog antenna 1. Connect a color-bar generator to the antenna terminals terminal. and select a crosshatch pattern. 2. Set the picture controls to the Auto level. 2. Set the picture controls to the Auto level. 3.

  • Page 13: Service Hints

    SERVICE HINTS POWER FAILURE DETECTOR This unit is equipped with a Power Failure Detector function Check the following if the unit is turned off by the power included in the CPU which checks for an abnormal condi- failure detector. tion in the chassis power supplies, including the power supply derived from the Horizontal Output Transformer.

  • Page 14: Mechanical Disassemblies

    MECHANICAL DISASSEMBLIES CHASSIS REMOVAL CABINET BACK REMOVAL 1. Remove cabinet back. 1. Refer to Figure 1, remove 12 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 15: 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 IN THIS PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE.

  • Page 16: Main Board

    Schematic Schematic Part No. Part No. Description Description Location Location MAIN PC BOARD C606 CKXAV2E471ABW CERAMIC 470P M 250V CKXAV2E471BBW CERAMIC 470P M 250V CAPACITORS C608 CK3A222KANHNN CERAMIC 2200P K C001 CEXLB1H100WAN ELECT 10U M CK3A222KCRDNN CERAMIC 2200P K C002 CEXLB1H100WAN ELECT 10U M...

  • Page 17: Locations

    Schematic Schematic Part No. Description Part No. Description Location Location C1224 CEXLB1C470WAN ELECT 47U M D501 DDXLBB006---N DIODE EM01Z(LYS) C1225 CK1H103KLZBNG CERAMIC 0.01U K DDXLBB012---N DIODE ERA15-02 C3401 CEXLB1HR10WAN ELECT 0.1U M D502 DZ1Z75------N ZENER DIODE 1Z75 C3404 CPXLB1H4R7ZAN NP-ELECT 4.7U M D503 DZXLBZA36A--N...

  • Page 18: Integrated Circuits

    Schematic Schematic Description Description Part No. Part No. Location Location L623 ZZ0122 PIPE CORE D680 DDXAAED0434-- DIODE 1N4148 1LB4Z21B0080N CORE, PIPE DD1S2076A---N DIODE 1S2076A L624 ZZ0122 PIPE CORE DD1S2473----N DIODE 1S2473 1LB4Z21B0080N CORE, PIPE D683 DDXAAED0434-- DIODE 1N4148 L625 ZZ0122 PIPE CORE DD1S2076A---N DIODE 1S2076A...
  • Page 19 Schematic Schematic Description Description Part No. Part No. Location Location T2SC536NGNPAN TR 2SC536NG-NPA Q627 T2SA1707-S--N TR 2SA1707-S T2SC945A-PA-N TR 2SC945A-PA T2SA1707-T--N TR 2SA1707-T T2SC945A-QA-N TR 2SC945A-QA T2SB985-S---N TR 2SB985-S T2SC945A-RA-N TR 2SC945A-RA T2SB985-T---N TR 2SB985-T Q682 T2SC1740S-Q-N TR 2SC1740S-Q Q634 T2SA1707-S--N TR 2SA1707-S T2SC1740S-R-N...
  • Page 20 Schematic Schematic Description Description Part No. Part No. Location Location Q1231 T2SC536NGNPAN TR 2SC536NG-NPA R503 RDD4701JPAANN CARBON 4.7K JA 1/6W (Cont.) T2SC945A-PA-N TR 2SC945A-PA R504 RND1002FPAANN MT-FILM 10K FA 1/6W T2SC945A-QA-N TR 2SC945A-QA R505 RDA1R50JPCANN CARBON 1.5 JA 1/2W T2SC945A-RA-N TR 2SC945A-RA R506 RDD8200JPAANN...
  • Page 21 Schematic Schematic Part No. Part No. Description Description Location Location R646 RDD1002JPAANN CARBON 10K JA 1/6W R3436 RGF5600JTCANL MT-GLAZE 560 JA 1/10W R647 RDD1002JPAANN CARBON 10K JA 1/6W R3437 RGF1003JTCANL MT-GLAZE 100K JA 1/10W R648 RDD5601JPAANN CARBON 5.6K JA 1/6W R650 RGF6800JTCANL MT-GLAZE...

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