Pioneer XR-VS77 User Manual

ORDER NO.
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Wheelock Place, Singapore 238880
PIONEER ELECTRONIC CORPORATION 1998
RRV2035
CONTENTS
T – ZZK OCT. 1998 Printed in Japan
1. SAFETY INFORMATION ...................................... 2
2. EXPLODED VIEWS AND PARTS LIST ................ 3
3. SCHEMATIC DIAGRAM ..................................... 16
4. PCB CONNECTION DIAGRAM .......................... 34
5. PCB PARTS LIST ............................................... 46
6. ADJUSTMENT .................................................... 53
7. GENERAL INFORMATION ............................... 62
7.1 PARTS ......................................................... 62
7.1.1 IC ......................................................... 62
7.1.2 DISPLAY.............................................. 75
7.2 DISASSEMBLY ........................................... 79
7.3 BLOCK DIAGRAM....................................... 82
8. PANEL FACILITIES AND SPECIFICATIONS .... 84
STEREO CD/VCD CASSETTE DECK RECEIVER
XR-VS77
XR-VS55
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
PREV NEXT RETURN SELECT
XR-VS77
Type
Model
Power Requirement
The Voltage can be converted by
XR-VS77 XR-VS55 the following method.
DBDXJ AC110-127V/220-230V/240V With the voltage selector
DLXJ/NC AC110-127V/220-230V/240V With the voltage selector

Pioneer XR-VS77 Specifications

General

Type	Stereo Receiver
Tuning range	FM, MW
Frequency response	20Hz to 20kHz
Input sensitivity	200mV (line)
Video Connections	Composite
Dimensions	420 x 143 x 307mm
Weight	8.1kg
Total harmonic distortion	0.09%
Input Sensitivity/Impedance	200mV / 47kΩ (line)
Signal to noise ratio	78dB (line)
Signal-to-Noise Ratio	78dB (line)
Speaker load impedance	8 ohms
Speaker Impedance	8 ohms

Summary

1. SAFETY INFORMATION

2. EXPLODED VIEWS AND PARTS LIST

2.2 EXTERIOR (1/2)

Exploded view diagram of external parts of the unit, part 1 of 2.

2.3 EXTERIOR (2/2)

Exploded view diagram of external parts of the unit, part 2 of 2.

2.4 FRONT PANEL SECTION

Exploded view diagram of the front panel components and their assembly.

2.5 $M MECHANISM VCD

Exploded view diagram of the CD/VCD mechanism assembly.

2.6 SERVO MECHANISM ASSY

Exploded view diagram of the servo mechanism assembly.

2.7 MECHANISM UNIT (XR-VS77)

Exploded view diagram of the mechanism unit specifically for the XR-VS77 model.

2.8 MECHANISM UNIT (XR-VS55)

3. SCHEMATIC DIAGRAM

3.1 OVERALL WIRING DIAGRAM

A comprehensive wiring diagram showing the interconnections between major circuit blocks.

3.2 FM/AM TUNER MODULE

3.3 VCD SURVO, MOTOR, SW and TRADE ASSEMBLIES

3.4 AF ASSY (1/3)

E AF ASSY (2/3)

E AF ASSY (3/3)

3.7 PRIMARY and SUB TRANS ASSEMBLIES

5. PCB PARTS LIST

A FM/AM TUNER MODULE

B VCD SURVO ASSY

E AF ASSY (XWZ3068)

F SECONDARY ASSY

G PRIMARY ASSY

DISPLAY ASSY (XWZ3104)

J CD SW LED ASSY

6. ADJUSTMENT

6.1 TUNER SECTION

Adjustment procedures for the FM and AM tuner sections of the device.

6.2.2 For XR-VS55

Adjustment procedures specific to the XR-VS55 model.

Mechanical Adjustment

Adjustments related to the mechanical operation of the cassette deck.

Electrical Adjustment

Electrical checks and preparation steps required before performing adjustments.

Playback Adjustment

Procedures for adjusting playback performance, including azimuth and level.

Recording Adjustment

Procedures for adjusting recording bias, frequency, and level.

7.2 DISASSEMBLY

$M MECHANISM VCD

Step-by-step instructions for disassembling the CD/VCD mechanism.

FRONT PANEL

Instructions on how to remove the front panel of the unit.

FITTING THE PULLEY INTO THE CARRIAGE MOTOR

8. PANEL FACILITIES AND SPECIFICATIONS

• PANEL FACILITIES

XR-VS77

For model XR-VS55

Function button section

Remote control unit

• SPECIFICATIONS

Lists technical specifications for Amplifier, CD, Cassette Deck, Tuner, and Accessories.