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Service
Manual ORDER NO.
CRT2166

BRIDGEABLE POWER AMPLIFIER

GM-222 X1R/UC, ES, EW

CONTENTS
1. SAFETY INFORMATION ............................................1 5. ELECTRICAL PARTS LIST ........................................12
2. EXPLODED VIEWS AND PARTS LIST .......................2 6. ADJUSTMENT..........................................................14
3. SCHEMATIC DIAGRAM .............................................6 7. GENERAL INFORMATION .......................................15
4. PCB CONNECTION DIAGRAM ..................................8 7.1 DISASSEMBLY ...................................................15
8. OPERATIONS AND SPECIFICATIONS.....................16

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 mot risk trying to do so
and refer the repair to a qualified service technician.
UC model
CAUTION

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 is listed by the California Health and Welfare agency as a known reproductive toxi-
cant which may cause birth defects or other reproductive harm (California Health & 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.

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

C PIONEER ELECTRONIC CORPORATION 1998 K-ZEU. JAN. 1998 Printed in Japan
GM-222

2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING

Fig. 1

NOTE:
- Parts marked by "*"are generally unavailable because they are not in our Master Spare Parts List.
- Screws adjacent to mark on the product are used for disassembly.

(1) PACKING SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.
1 Contain Box See Contrast table (2) * 9-3 Card See Contrast table (2)
2 Carton See Contrast table (2) * 9-4 Warranty Card See Contrast table (2)
3 Protector HHP0020
4 Polyethylene Bag HEG0010
5 Screw(x4) BYC40P180FZK

6 Polyethylene Bag HEG0011
7 Terminal See Contrast table (2)
8 Cord Assy See Contrast table (2)
9-1 Owner's Manual See Contrast table (2)
9-2 Owner's Manual See Contrast table (2)

2
GM-222

(2) CONTRAST TABLE
GM-222/X1R/UC, GM-222/X1R/ES and GM-222/X1R/EW are constructed the same except for the following:

Part No.
Mark No. Symbol and Description GM-222/X1R/UC GM-222/X1R/ES GM-222/X1R/EW
1 Contain Box HHL0138 HHL0139 HHL0140
2 Carton HHG0138 HHG0139 HHG0140
7 Terminal HKC0003(x8) HKC0003(x4) HKC0003(x4)
8 Cord Assy Not used HDE4453 HDE4453
9-1 Owner's Manual HRD0046 HRD0045 HRD0047

9-2 Owner's Manual Not used HRD0049 Not used
* 9-3 Card ARY1048 Not used Not used
* 9-4 Warranty Card Not used Not used HRY1087

- Owner's Manual
Model Part No. Language
GM-X222/X1R/UC HRD0046 English, French
GM-X222/X1R/ES HRD0045 English, Spanish
HRD0049 Arabic, Portuguese(B)
GM-X222/X1R/EW HRD0047 English, French, German, Dutch, Spanish, Italian

3
GM-222

2.2 EXTERIOR

Fig. 2

4
GM-222

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ30P050FZK 26 Pin Jack(CN851) HKB0001
2 Screw(M3x6) CBA1320 27 Terminal(CN901) HKE0001
3 Screw(M3x12) CBA1323 28 Terminal(CN651) See Contrast table (2)
4 Screw CBA1382 29 Holder HNC0006
5 Screw HBA0006 30 Screw PPZ30P060FZK

6 Cord Assy See Contrast table (2) 31 Plate Unit HXA0163
7 Fuse(15A) See Contrast table (2) 32