Pioneer xrvs 90 service manual

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Pioneer

Service
Manual

STEREO CD/VCD CASSETTE DECK RECEIVER

XR-VSQOSW
XR-VSQO

XR-VS7OSW
XR-VS70

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

ORDER NO.
RRV2364

Type Model Power Requirement The voltage ean be converted
XR-VSQOSW XR-V390 XR-VS7OSW XR-VS70 by the lollowmg method.
DBDXJ O - O - ACI10-127V/220-230V/240V With the voltage selector
DLXJ/NC - O - O A0110-127V/220-230V/240V With the voltage selector
DXJN/NC - O - O ACI10-127V/220-230V/240V With the voltage selector
CONTENTS
1_ SAFETY INFORMATION ...................................... 2 7 GENERAL INFORMATION ................................ 74
2. EXPLODED VIEWS AND PARTS LIST ---------------- 3 7.1 DIAGNOSIS --------------- -- 74
3. BLOCKDIAGRAM AND SCHEMATIC DIAGRAM ----22 7.1.1 DISASSEMBLY -- 74
4. PCB CONNECTION DIAGRAM 42 7.2 PARTS -- -- 77
5_ PCB PARTS LIST ......................... 56 7.21 lo 77
6_ ADJUSTMENT .................................................... 64 7.22 DISPLAY ................................................ 79

8. PANEL FACILITIES AND SPECIFICATIONS 81

PIONEER 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 EUROPE NV Haven 1087, Keetberglaan 1, 9120 MeIseIe, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

©P|ONEER CORPORATION 2000
T - IZK AUG. 2000 Printed in Japan

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XR-VSQOSW, XR-VSQO, XR-VS7OSW, XR-VS7O

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians ; it is not meant for the casual do-it-
yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.

Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.

- WARNING ! LASER DIODE CHARACTERISTICS 7
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS1 MAXIMUM OUTPUT POWER; 5 mW
BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOFI WAVELENGTH: 780 nm to 785 nm
CLASS 1.

A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE APPARATUS.

LABEL CHECK (For DLXJ/NC Type)

Printed on the Rear Panel

CLASS I
LASER PRODUCT

DLXJ/NC Type

CAUTION
INVISIBLE LASER
RADIATION WHEN OPEN,
AVOID EXPOSURE
TO BEAM PRWIOIB

Additional Laser Caution

1. Laser Interlock Mechanism
The position of the switch ($9501) for detecting loading
state is detected by the system microprocessor, and
the design prevents laser diode oscillation when the
switch (89501) is pressed physically.
Thus, the interlockvvill no longerfunction if the switch (89501)
is released physically and deliberatery.
The interlock also does not function in the test mode *.
Laser diode oscillation will continue, if pin 62 of
LA9240ML (IC1101) on the $M SERVO VCD Assy
mounted on the $M MECHANISM VCD is connected to
GND, or else the terminals of Qt 101 are shorted to each
other (fault condition).

2. When the cover is opened, close viewing of the objective
lens with the naked eye will cause exposure to a Class
1 laser beam.

* :Referto page 73.