Pioneer ctw 706 dr service manual

Page 1

(U) PIONEER

The Art of Entertainment

ORDER NO.
0 The above illustration shows CT-W706DR. RRV'I 784

STEREO DOUBLE CASSETTE DECK

T-W700'R
CT-W606DR
CT-05D

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

Model
Type Power requirement
CT-W706 DR CT-W606DR CT-OSD

_nn- AC 110/ 120-127/220/230-240V With the voltage selector
---n-=

CONTENTS I

1. SAFETY INFORMATION ...................................... 2 7. GENERAL INFORMATION ................................ 35
2. EXPLODED VIEWS AND PARTS LIST ................ 3 7.1 PARTS ......................................................... 35
3. SCHEMATIC DIAGRAM ..................................... 12 7.1.1 IC .......................................................... 35
4. PCB CONNECTION DIAGRAM .......................... 22 7.1.2 DISPLAY ............................................... 39
5. PCB PARTS LIST ............................................... 28 7.2 TEST MODE ................................................ 40
6. ADJUSTMENT .................................................... 31 7.3 BLOCK DIAGRAM ....................................... 43

8. PANEL FACILITIES AND SPECIFICATIONS 44

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE, INC. PO. Box 1760, Long Beach, CA 90801-1760, USA.

PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923

© PIONEER ELECTRONIC CORPORATION 1997 . . _
. T - IZR APR. 1997 Printed In Belgium

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CT-W706 DR, CT-WGOGDR, CT-05D

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 safety 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 safety, you
should not risk trying to do so and refer the repair to a qualified service technician.

WARNING

Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may
cause birth defects or other reproductive harm (California Health 8: Safety Code, Section 25249.5).

When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with
the solder. Also, when soldering do not inhale any smoke or fumes produced.

NOTICE
(FOR CANADIAN MODEL ONLY)

Fuse symbols E (fast operating fuse) and/or 3 (slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.

REMARQUE
(POUR MODELE CANADIEN SEULEM ENT)

Les symboles de fusible E (fusible de type rapide) et/ou H (fusible de type lent) sur CCI i'ndiquent que les pieces
de remplacement doivent avoir la meme designation.

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the customer and service

technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage current
tester such as Simpson Model 229-2 or equivalent
between the earth ground and all exposed metal parts of
the appliance (input/output terminals, screwheads, metal
overlays, control shaft, etc.). Plug the AC line cord of the
appliance directly into a 120V AC 60Hz outlet and turn
the AC power switch on. Any current measured must not

exceed 0.5mA.
.I Reading should

Leakage not be above
current 0.5mA

tester

Test all
exposed metal
I _ sunaces

Also test with
plug reversed _ Earth
(Usmg AC adapter ground
plug as required)

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.

Electrical components having such features are

identified by marking with a A on the schematics and on
the parts list in this Service Manual.
The use of a substitute replacement component which
dose not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this ServiceManual, may create shock, fire,
or other hazards.

Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of,

PIONEER Service Manual may be obtained at a nominal
charge from PIONEER.