Pioneer GM-2027 Service manual
PIONEER CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2002
K-ZZB. JUNE 2002 Printed in Japan
AMPLIFIER
GM-2027
ZF
X1R/UC
VEHICLE DESTINATION PRODUCED AFTER PART No. ID No. PIONEER MODEL No.
LINCOLN U.S.A., CANADA 2003 GM-2027ZF/X1R/UC
For details, refer to "Important symbols for good services".
ORDER NO.
CRT2866
FORD
GM-2027ZF/X1R/UC
2
1
234
12
34
F
E
D
C
B
A
GM-2027ZF/X1R/UC
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.
[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.
When you find the procedures bearing any of the symbols, be sure to fulfill them:
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.
CONTENTS
SAFETY INFORMATION ............................................2
1. SPECIFICATIONS........................................................2
2. EXPLODED VIEWS AND PARTS LIST.......................3
3. SCHEMATIC DIAGRAM .............................................4
4. PCB CONNECTION DIAGRAM ................................10
5. ELECTRICAL PARTS LIST ........................................14
6. ADJUSTMENT..........................................................16
7. GENERAL INFORMATION .......................................16
7.1 DIAGNOSIS ........................................................16
7.1.1 DISASSEMBLY .........................................16
7.1.2
CONNECTOR FUNCTION DESCRIPTION.......17
1. SPECIFICATIONS
Power source .........14.4±0.2V(10.5V-16.0V allowable) DC
Grounding system........................................Negative type
Backup current..............................................0.5mA or less
Dimensions.......................173.3(W)x51.7(H)x151.7(D)mm
Weight..........................................................................1.1kg
3
5
6
7
8
F
E
D
C
B
A
5
6
7
8
GM-2027ZF/X1R/UC
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR
1 Screw BMZ26P180FMC
2 Screw BMZ30P050FMC
3 Chassis HNA0004
4 Case HNB0151
5 Shield HNC0126
6 Heat Sink HNR0190
7 Mother Unit HWM0071
8 Connector(CN102) HKE0040
9 Connector(CN101) HKM1349
10 Holder HNC0104
11 Holder HNC0105
12 Holder HNC0106
13 Screw IMS30P050FMC
14 IC(IC401) PAL006A
15 IC(IC403) PAL006A
- EXTERIOR SECTION PARTS LIST
Mark No. Description Part No.
Mark No. Description Part No.
4
13
13
11
7
12
9
13
8
10
15
6
A
1
1
5
1
14
2
3
2
4
1
234
12
34
F
E
D
C
B
A
GM-2027ZF/X1R/UC
A-a A-b
A-a
A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or
"ELECTRICAL PARTS LIST".
A-a
A
0.3mH
3. SCHEMATIC DIAGRAM
3.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
5
5
6
7
8
F
E
D
C
B
A
5
6
7
8
GM-2027ZF/X1R/UC
A-b
A
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 2R2
0.022 R022
←
←
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
NOTE :
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
A
MOTHER UNIT
6
1
234
12
34
F
E
D
C
B
A
GM-2027ZF/X1R/UC
A-a
A-b
A-a
A-a
A-b
1
2
3
4
5
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