Sanyo VHR-H792E User Manual

SERVICE MANUAL
Video cassette recorder
FILE NO.
REFERENCE No.SM5310389
(VHR-M292E)
VHR-M262EV
(Product Code : 143 182 34)
(Europe)
VHR-M272SP
VHR-M292E
(Product Code : 143 182 36, 40)
(Product Code : 143 182 31)
(U.K.)
KR2LN/EV4,SP2,PR,E2,EV3,IR2
PAL
(Spain), (Portugal)
VHR-H772EV
(Product Code : 143 182 32)
(Europe)
VHR-M292EV
(Product Code : 143 182 33)
(Europe)
VHR-M292IR
VHR-H772SP
(Product Code : 143 182 38)
(Product Code : 143 182 35, 39)
(Ireland)
VHR-H792E
(Product Code : 143 182 29)
(U.K.)
VHR-H792IR
(Product Code : 143 182 37)
(Ireland)
(Spain), (Portugal)
VHR-H802E
(Product Code : 143 182 30)
(U.K.)
KR4HN/EV,SP,PR,E,IR,E2

Sanyo VHR-H792E Specifications

General

Brand	Sanyo
Model	VHR-H792E
Category	VCR
Language	English

Summary

Important Safety Precautions

Precautions during Servicing

Details essential safety measures for servicing the unit.

Safety Check After Servicing

Insulation Resistance Test

Confirms specified insulation resistance between power cord prongs and exposed parts.

Dielectric Strength Test

Confirms specified dielectric strength between power cord prongs and exposed parts.

Clearance Distance Measurement

Confirms specified clearance distance between terminals and metallic parts.

Leakage Current Test

Confirms specified or lower leakage current between accessible parts and earth ground.

Service Information for EEPROM IC Setting

EEPROM Option Code Setting

Details EEPROM option code settings for various Sanyo models.

EEPROM Write Procedure

Step-by-step guide for writing data to the EEPROM.

PG Adjust Procedure

Procedure for performing PG (Pulse Generator) adjustment.

EEPROM Initial Setup

Procedure for EEPROM initialization and basic operation check.

Specifications

General Specifications

Details on power, tape speed, dimensions, and operating conditions.

Video Specifications

Technical parameters related to the video system, including television standards.

Audio Specifications

Section 3 Electrical Adjustment Points Arrangement

Electrical Adjustment Points Arrangement

Electrical Adjustment Procedures

Servo Circuit Adjustment

Detailed procedures for adjusting the servo circuit, including PG adjustment.

Electrical Troubleshooting Guide

Power Circuit (SMPS) Troubleshooting

Step-by-step guide for diagnosing power supply (SMPS) issues.

Electrical Troubleshooting Guide

Servo Circuit Troubleshooting

Troubleshooting steps for issues related to the servo circuit.

Electrical Troubleshooting Guide

System & Front Panel Circuit Troubleshooting

Y/C CIRCUIT Troubleshooting

Tuner/IF Circuit Troubleshooting

Hi-Fi Circuit Troubleshooting

Deck Mechanism Disassembly

Drum Assembly Disassembly

Step-by-step guide for disassembling the drum assembly and motor.

Deck Mechanism Adjustment

Mechanism Alignment Position Check

Preparation for Adjustment

Guide Roller Height Adjustment

Audio/Control (A/C) Head Adjustment

Tape Path Confirmation

Checking Torque

Precise Adjustment (Azimuth)

X-Value Adjustment

Deck Mechanism Adjustment

Drum Assembly Adjustment (Video Heads)

Corrects for shift in roller guide and X value after drum replacement.

Tape Travel Check after Reassembly

Checks audio, RF locking times, and tape curling after deck reassembly.

Maintenance/Inspection Procedure

Check Before Starting Repairs

Maintenance/Inspection Procedure

Mechanism Troubleshooting Guide

Deck Mechanism Troubleshooting

Troubleshooting steps for deck mechanism failures like auto REW and F/R modes.

Mechanism Troubleshooting Guide

Front Loading Mechanism Troubleshooting

Troubleshooting steps for front loading mechanism issues like insertion or ejection.

Section 5 Replacement Parts List

Mechanical Section Parts

Cabinet & Main Frame Section Parts

Parts Section

Packing Accessory Section Parts

Remote Control Section Parts

Electrical Section

Diode List

Fuse, Holder, LED List

IC, Jack List

Coil List

Transistor List

Resistor List