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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. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1999
K-ZZY. FEB. 1999 Printed in Japan
ORDER NO.
CRT2320
UNIVERSAL MULTI-CD SYSTEM
CDX-FM1259
X1N/UC
Service
Manual
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................3
3. SCHEMATIC DIAGRAM ...........................................12
4. PCB CONNECTION DIAGRAM ................................24
5. ELECTRICAL PARTS LIST ........................................32
6. ADJUSTMENT..........................................................36
7. GENERAL INFORMATION .......................................43
7.1 PARTS .................................................................43
7.1.1 IC................................................................43
7.1.2 DISPLAY ....................................................49
7.2 DIAGNOSIS ........................................................50
7.2.1 DISASSEMBLY .........................................50
7.2.2 TEST MODE ..............................................52
7.3 BLOCK DIAGRAM ..............................................58
8. OPERATIONS AND SPECIFICATIONS.....................60
- See the separate manual CX-938(CRT2357) for the CD mechanism description, disassembly and circuit
description.
- The CD mechanism employed in this model is one of C8 series.
CDX-FM1259/X1N/UC
CDX-FM1257 X1N/UC,ES


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2
CDX-FM1259,FM1257
- CD Player Service Precautions
1. For pickup unit(CXX1285) handling, please refer
to"Disassembly"(See page 50). During replacement,
handling precautions shall be taken to prevent an
electrostatic discharge(protection by a short pin).
2. During disassembly, be sure to turn the power off
since an internal IC might be destroyed when a con-
nector is plugged or unplugged.
3. Please checking the grating after changing the pick-
up unit (See page 37).
4. Since these screws protects the mechanism during
transport, be sure to affix it when it is transported for
repair, etc.
1. SAFETY INFORMATION
1.1 CDX-FM1259/X1N/UC,CDX-FM1257/X1N/UC
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
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of
California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65
A transport screw has been attached to the
set in order to protect it during transporta-
tion. After removing the transport screw,
cover the hole with the supplied seal.
Be sure to remove the transport screw
before mounting the set. The removed
transport screw should be retained in the
accessory bag for use the next time the set
is transported.
Seal
After removing the trans-
port screw, cover the hole
with the supplied seal.
Transport screw
Attach to the original position before
transporting the set.


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3
CDX-FM1259,FM1257
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
29
30
29
36
33
27
28
17
24
30
4
37
8
6
11
10
7
9
32
31
25
18
16
15
21
22
43
20
13
16
2
14
19
23
12
3
5
1
40
41
42
35
34
26


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4
CDX-FM1259,FM1257
Part No.
Mark No. Description
CDX-FM1259/X1N/UC
CDX-FM1257/X1N/UC
CDX-FM1257/X1N/ES
1 Accessory Assy
CEA2494
CEA2494
CEA2495
2 Spring
CBH-865
CBH-865
CBH-865
3 Cord
CDE4289
CDE4289
CDE4289
4 Cord
CDE5812
CDE5812
CDE5812
5 Cord
CDE5814
CDE5814
CDE5814
6 Screw Assy
CEA1962
CEA1962
CEA1962
7 Screw
CBA1295
CBA1295
CBA1295
*
8 Polyethylene Sheet
CNM5158
CNM5158
CNM5158
9 Screw
HMB60P500FMC
HMB60P500FMC
HMB60P500FMC
10 Screw
HMF40P080FZK
HMF40P080FZK
HMF40P080FZK
11 Nut
NF60FMC
NF60FMC
NF60FMC
12 Screw Assy
CEA1965
CEA1965
CEA1965
*
13 Polyethylene Bag
CEG-127
CEG-127
CEG-127
14 Screw
IMS30P050FZK
IMS30P050FZK
IMS30P050FZK
15 Clamper
CEF1010
CEF1010
CEF1010
*
16 Polyethylene Bag
CEG-158
CEG-158
CEG-158
17 Polyethylene Bag
CEG1185
CEG1185
*E36-622
18 Battery
CEX1030
CEX1030
CEX1030
19 Bracket
CNC8061
CNC8061
CNC8061
20 Cushion
CNM3182
CNM3182
CNM3182
21 Fastener(Soft)
CNM3872
CNM3872
CNM3872
22 Fastener(Rough)
CNM4041
CNM4041
CNM4041
23 Panel
CNS5428
CNS5428
CNS5428
*
24 Polyethylene Bag
CEG1099
CEG1099
CEG1099
25 Polyethylene Bag
CEG1174
CEG1174
CEG1026
26 Carton
CHG3721
CHG3720
CHG3722
27 Sub Carton
CHG3729
CHG3728
CHG3730
28 Contain Box
CHL3721
CHL3720
CHL3722
29 Protector
CHP2136
CHP2136
CHP2136
30 Protector
CHP2137
CHP2137
CHP2137
31 Seal
CNM5599
CNM5599
CNM5599
32-1 Installation Manual
CRD2874
CRD2874
CRD2877
32-2 Owner's Manual
CRD2873
CRD2875
CRD2876
* 32-3 Warranty Card
CRY1070
Not used
Not used
* 32-4 Caution Card
CRP1205
CRP1205
CRP1205
33 Antenna Select Assy
CWM6445
CWM6445
CWM6445
34 Display Assy
CXB3242
CXB3241
CXB3241
35 Remote Control Assy
CXB3262
CXB3261
CXB3261
36 Magazine Assy
CXB4028
CXB4028
CXB4028
37 Angle Assy
CXB3589
CXB3589
CXB3589
- PACKING SECTION PARTS LIST
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.


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5
CDX-FM1259,FM1257
- Owner's Manual
Model
Part No.
Language
CDX-FM1259/X1N/UC
CRD2873
English, French
CDX-FM1257/X1N/UC
CRD2875
English, French
CDX-FM1257/X1N/ES
CRD2876
English, Spanish, Portuguese(B), Arabic
- Installation Manual
Model
Part No.
Language
CDX-FM1259/X1N/UC
CRD2874
English, French
CDX-FM1257/X1N/UC
CRD2874
English, French
CDX-FM1257/X1N/ES
CRD2877
English, Spanish, Portuguese(B), Arabic
Part No.
Mark No. Description
CDX-FM1259/X1N/UC
CDX-FM1257/X1N/UC
CDX-FM1257/X1N/ES
38 ·····
39 ·····
*
40 Caution Card
CRP1090
CRP1090
CRP1090
*
41 Caution Card
CRP1196
CRP1196
CRP1196
42 Air Cushioned Bag
CEG1055
CEG1055
CEG1055
43 Cover
CEG1062
CEG1062
CEG1062