Pioneer drm 1004 x 4 service manual

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(U) PIONEER

The Art of Entertainment

Service «
Manual

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m ORDER NO.
E E) R RV1 654

CD-ROM CHANGER

D R M - 1 O 0 4X - 2

CD-ROM WRITER CHANGER

D R M - 1 0 0 4X R

READER DRIVE UNIT WRITER DRIVE UNIT

DR-D4XI DR-R4Xl

OPTION READER KIT

D R - D 1 3 4X

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

Model
Type DRM-IooAX-A DRM-Ioux-z DRM-Ioo4xR 321:? OR-omx P°w°rR°qUiremem Remarks
IUC O - - - - AC120V/230V
IUCYV - O O - - Acmvmov
ZUCYV/WL - - - 7 0 DC power supply from other syslcm
- - - O - DC power supply from other system
CONTENTS
1. SAFETY 'NFORMATION ................................ 2 7 TEST MODE ......................................... 98
2. SYSTEM CONSTRUCTION 8. ADJUSTMENTS" --------------------------- 116
3. PCB LOCATION ....................................... 5 9, DISASSEMBLY ................................... 141
4. EXPLODED VIEWS, PACKING 10. IC INFORMATION ~ ...145
AND PARTS LIST ------------ 6 11. BLOCK DIAGRAM AAAA "-148

5. SCHEMATIC AND PCB DIAGRAMS ------- 12. PANEL FACILITIES ------------------------------- 149
6. PCB PARTS LIST ....................................... 89 13- SPEC'FICATIONS .................................. 151

PIONEER ELECTRONIC CORPORATION 4-1,Meguro1~Chome.Meguro-ku, Tokyo 153. Japan
PIONEER ELECTRONICS SERVICE, INC. PO. 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 Lane Crawford PIaoe. Singapore 0923

© PIONEER ELECTRONIC CORPORATION 1996 my m WWW, Mm

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DRM- 1004X-4, DRM-1004X-2, DRM- 1004XR,
DR- D4XI, DR- R4XI, DR- D134X

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

Lead in solder used In this product ls listed by the California Health and Welfare agency as a known reproductive toxicant which
may cause birth defects or other reproductive harm (California Health I Safety Code, Section 25240.5).

When servicing or handling circuit boards and other components which contain lead ln solder, avoid unprotected skin contact with
the solder. Also, when soldering do net Inhale any smoke or fumes produced.

NOTICE
(FOR CANADIAN MODEL ONLY)

Fuse symbols IEB (fast operating fuse) and/or JEE- (slow operating fuse) on PCB Indicate that replacement pans

must be of identical designation.

HEMAROUE
(POUR MODELE CANADIEN SEULEMENT)

Les symboles de fusible {EB- (fusibie de type rapids) etlou B (fusible de type lent) sur CCI lndiquent que les

pieces de remplacernent dolvent avoir la meme déslgnatlon.

(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

metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft. etc.l. 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 1.1mA.

Reading should

Lgakage not be above

Device current HIM
under tester
test * -
Test all
anosed metal
surIaces
O Also test with
plug reversed Earth
(Using AC adapter ground

plug as required)

AC Leakage Test

equivalent between the earth ground and all exposed

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
TENTIAL SHOCK HAZARD AND MUST BE COR-
RECTED BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.

2.PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appli-
ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be ob-
tained by using replacement components rated for vol-
tage, 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 Service Manual, 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 ad-
ditional copies of, PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.