Pioneer CDX-M1026ZG User manual

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-ZZD. FEB. 1999 Printed in Japan
ORDER NO.
CRT2290
MULTI-COMPACT DISC PLAYER
CDX-M1026ZG X1H/UC
Service
Manual
GM
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST.......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....9
4. PCB CONNECTION DIAGRAM ................................22
5. ELECTRICAL PARTS LIST ........................................28
6. ADJUSTMENT..........................................................31
7. GENERAL INFORMATION .......................................39
7.1 IC .........................................................................39
7.2 DIAGNOSIS ........................................................41
7.2.1 DISASSEMBLY............................................41
7.2.2 TEST MODE ................................................43
7.2.3 CONNECTOR FUNCTION DESCRIPTION..44
8. OPERATIONS AND SPECIFICATIONS.....................45
VEHICLE DESTINATION PRODUCED AFTER GM PART No. ID No. PIONEER MODEL No.
Oldsmobile, U.S.A., CANADA February 1999 25659167 CDX-M1026ZG/X1H/UC
Buick, Pontiac
-See the separate manual CX-653(CRT1916) for the CD mechanism description, disassembly and circuit
description.
-The CD mechanism employed in this model is one of C6 series.

2
CDX-M1026ZG
-CD Player Service Precautions
1. For pickup unit(Service)(CXX1235) handling, please
refer to"Disassembly"(see page 42).
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 pickup
unit(see page 33) since these screws protects the
mechanism during transport, be sure to affix it when
it is transported for repair, etc.
-Transportation of multi-CD player
Seal
After removing transport screw, cover the hole
with the supplied.seal.
Transport screw
Attach to original position before transporting the set
A transport screw has been attached to the set in order to protect it
during transportation. 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 trans-
ported.

3
CDX-M1026ZG
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.

4
CDX-M1026ZG
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR

5
CDX-M1026ZG
1 Screw BMZ20P040FMC
2 Screw BMZ26P040FMC
3 Screw BMZ30P040FMC
4 Screw BMZ30P040FZK
5 Screw CBA1014
6 Screw CBA1037
7 Screw CBA1353
8 Spring CBH1862
9 Spring CBH2171
10 Connector CDE5205
11 Transistor(Q1952) 2SB1335A
12 Upper Case CNB2096
13 Spacer CNC5536
14 Bracket CNC6782
15 Holder CNC7211
16 Holder CNC7213
17 Seal CNM4918
18 Insulator CNM4973
19 PCB CNP4402
20 Grille CNS4146
21 Cover CNS4153
22 Damper CNV4502
23 Arm Unit CXA8606
24 Lower Case Unit CXA9466
25 Bracket Unit CXB1636
* 26 Caution Card HRP1090
27 Polyethylene Bag HEG0018
28 CD Mechanism Module CXK4551
29 Extension Unit HWX2034
30 Screw BMZ26P050FMC
31 Plug(CN1801) CKS1049
32 Plug(CN1802) CKS1050
* 33 Plug(CN1702) CKS1052
34 Connector(CN1701) CKS2233
35 Connector(CN1102) CKS2398
36 Holder CNC6672
37 Holder CNC6784
38 Screw BPZ20P060FMC
39 Screw BPZ26P080FMC
40 Leaf Spring CBL1286
41 Cord Assy CDE5107
42 Clamper CEF1020
43 Lighting Conductor CNV4720
44 Grille Unit CXA9439
45 Screw IMS20P035FZK
46 Screw IMS26P040FMC
47 Screw IMS30P040FMC
48 Screw IMS30P060FZK
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
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.

6
CDX-M1026ZG
2.2 CD MECHANISM MODULE

7
CDX-M1026ZG
1 Screw CBA1369
2 CD Core Unit CWX2014
3 Connector(CN701) CKS1968
4 Connector(CN801) CKS3484
5 Connector(CN101) CKS3486
6 Pickup Unit(Service) CXX1235
7 Screw IMS26P040FMC
8 Screw JFZ17P020FNI
9 Screw(M2×2.5) CBA1037
10 Spring CBL1362
11 Screw(M2×2.5) CBA1077
12 Screw(M2×2.5) CBA1085
13 Spring CBH1353
14 Screw(M2×4) CBA1176
15 Screw CBA1166
16 Screw(M2×4) CBA1362
17 Washer CBF1002
18 Washer CBF1038
19 Spring CBH1822
20 Stoper CNC8095
21 Spring CBH1827
22 Spring CBH1828
23 Spring CBH1829
24 Spring CBH1853
25 Spring CBH1854
26 Spring CBH1867
27 Spring CBH1868
28 Spring CBH1891
29 Spring CBH1892
30 Spring CBH1919
31 Spring CBH1930
32 Spring CBH2091
33 Spring CBL1241
34 Spring CBL1242
35 Spring CBL1388
36 PCB Unit CWX2032
37 Shaft CLA2852
38 Arm CNC6181
39 Lever CNC6194
40 Bracket CNC6292
41 Lever CNC6534
42 Lever CNC7975
43 Lever CNC8097
44 Holder CNC6540
45 Cover CNC7452
46 Arm CNC6799
* 47 Holder CNC6819
* 48 Holder CNC6827
49 Spacer CNM4879
50 Sheet CNM5118
* 51 Sheet CNM5020
52 PCB CNP4205
* 53 Spring CBL1304
54 Screw CBA1387
55 PCB CNP4382
56 PCB CNP4453
57 Bearing CNR1423
58 Belt CNT1053
59 Photo Transistor(Q851) PT4800
60 Gear CNV5764
61 Gear CNV4404
62 Gear CNV4406
63 Cover CNV4924
64 Holder CNV4950
65 Gear CNV5305
66 Gear CNV5879
67 Rail(White) CNV4419
68 Rail(Black) CNV4420
69 Clamper CNV5226
70 Lever CNV4422
71 Gear CNV4423
72 Gear CNV4827
73 Rack CNV4828
74 Arm CNV4426
75 Arm CNV4490
76 Arm CNV4511
77 Guide CNV4597
78 Arm CNV4670
79 Guide CNV4722
80 Screw Unit CXB1270
81 Motor Unit(M854)(Carriage) CXB1394
82 Chassis Unit CXB2692
83 Bracket Unit CXB4008
84 Plate Unit CXB2262
85 Motor Unit(M853)(Tray) CXB1142
86 Motor Unit(M852)(ELV) CXB2056
87 Chassis CXB3311
88 Bracket Unit CXA9211
89 Damper Unit CXA7159
90 Lever Unit CXB2273
Mark No. Description Part No. Mark No. Description Part No.
-CD MECHANISM MODULE SECTION PARTS LIST

8
CDX-M1026ZG
2.3 MAGAZINE ASSY
1 Magazine Assy CXB2580
2 Tray CNV4824
* 3 Label CRW1367
-MAGAZINE ASSY SECTION PARTS LIST
Mark No. Description Part No.
91 Lever Unit CXB2493
92 Bracket Unit CXA9215
93 Magazine Holder Unit CXB2579
94 Frame Unit CXB2271
95 Frame CNC6917
96 Lever Unit CXB2275
97 Arm Unit CXB2276
98 Motor Unit(M851)(Spindle) CXB1395
99 Plate CNC6847
100 Screw JFZ20P025FNI
* 101 PCB CNP4537
102 Spring CBL1295
103 Holder CNV4761
104 Spring CBH1948
105 Screw(M2×2) CBA1250
106 Plate CNC7076
107 Screw(M2×2.5) CBA1041
108 Screw JGZ17P022FZK
109 Spring CBL1305
110 Switch(S853,854) CSN1012
111 Spacer CBF1070
112 Volume(VR801) CCW1021
113 LED(D851) CN504-2
114 Switch(S851,852) CSN1033
115 Screw CBA1054
116 Screw CBA1114
Mark No. Description Part No. Mark No. Description Part No.

9
CDX-M1026ZG
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
CD CORE UNIT
B
MAIN PCB
D
PCB UNIT
MOTOR PCB
E
PHOTO PCB
C
SWITCH PCB
F
PICKUP UNIT
(SERVICE)
OPEN PCB
H
CLOSE PCB
G

10
CDX-M1026ZG
1234
1234
D
C
B
A
CCP1175
CXB1395
CXB1394
CXB1142
CXB2056
A
C
A-a
D
E
3.2 CD MECHANISM MODULE(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL
PARTS LIST”.
A-a A-b
A-aA-a A-bA-b
A-bA-b
A-aA-a
Large size
SCH diagram
Guide page
Detailed page
F
A
E
D
C
F

11
CDX-M1026ZG
5678
5678
D
C
B
A
C209 100P
R206
510
C302 R22
R301
3R3K
MAIN PCB
A-b
A
B

12
CDX-M1026ZG
1234
1234
D
C
B
A
CCP1175
A-a
A-a A-b
A

13
CDX-M1026ZG
5678
5678
D
C
B
A
CCP1175
CXB1395
CXB1394
CXB1142
CXB2056
A-a
A-a A-b
C
D
E
F
E
D
C
F

14
CDX-M1026ZG
1234
1234
D
C
B
A
A-b
A-a A-b
R206
510
C209
100P

15
CDX-M1026ZG
5678
567
D
C
B
A
A-b
A-a A-b
8
C302 R22
R302
3R3K
MAIN PCB
B

16
CDX-M1026ZG
-Waveforms
1RFO 0.5V/div. 0.5µs/div.
Normal mode: play
1CH1: RFO 1V/div.
2CH2: MIRR 5V/div.
Test mode: Tracking open
0.5ms/div 1CH1: RFO 1V/div.
2CH2: MIRR 5V/div.
Normal mode: The defect part
passes
0.5ms/div
3CH1: FD 0.5V/div.
4CH2: FOP 2V/div.
Test mode: No disc, Focus close
0.2s/div. 3CH1: FD 0.5V/div.
5CH2: FOK 2V/div.
Normal mode: Focus close
0.2s/div. 6CH1: FEY 0.5V/div.
7CH2: XSI 2V/div.
Normal mode: Focus close
1ms/div.
REFO →
8CH1: TEY 0.5V/div.
9CH2: TD 0.5V/div.
Test mode: 32 tracks jump (FWD)
0.5ms/div 8CH1: TEY 0.5V/div.
9CH2: TD 0.5V/div.
Test mode: Single jump (FWD)
0.5ms/div 8CH1: TEY 0.5V/div.
9CH2: TD 0.5V/div.
Test mode: 100 tracks jump (FWD)
5ms/div
6CH1: FEY 0.1V/div.
3CH2: FD 0.2V/div.
Normal mode: Play
20ms/div 3CH1: FD 0.5V/div.
0CH2: MDYA 1V/div.
Normal mode: Focus close (12cm)
0.5s/div. 3CH1: FD 0.5V/div.
0CH2: MDYA 1V/div.
Normal mode: Focus close (8cm)
0.5s/div.
GND →GND →
REFO →
REFO →
REFO →
REFO →
GND →
REFO →
REFO →
GND →
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
Note:1. The encircled numbers denote measuring pointes in the circuit diagram.
2. Reference voltage
REFO:2.5V

17
CDX-M1026ZG
8CH1: TEY 0.2V/div.
9CH2: TD 0.2V/div.
Normal mode: play
8CH1: TEY 0.5V/div.
!CH2: SD 0.5V/div. 5ms/div. 0MDYA 0.5V/div. 0.1s/div.
Normal mode: Play (12cm)
0MDYA 0.5V/div. 10ms/div.
Long Search (12cm)
@ EFM 1V/div. 5µs/div.
Play
8CH1: TEY 1V/div.
#CH2: TEC 1V/div.
Test mode: Focus close
Tracking open
2ms/div.
8CH1: TEY 0.5V/div.
6CH2: FEY 0.5V/div.
Normal mode: AGC after focus
0.2s/div.
20ms/div.
$ SCKO 2V/div. 1µs/div.
Play
% Dout 2V/div. 10µs/div.
Play
^LRCK 2V/div. 20µs/div. *CH1: R OUT 1V/div.
&CH2: L OUT 1V/div.
Normal mode: Play (1kHz 0dB)
6CH1: FEY 0.2V/div.
3CH2: FD 0.5V/div.
Normal mode: During AGC
1ms/div.
0.2ms/div.
REFO →
REFO →
REFO →
REFO →
REFO →
REFO →
GND →
REFO →
REFO →
REFO →
REFO →REFO →
REFO →
REFO →
REFO →
REFO →GND →
REFO →
GND →
REFO →
GND →
REFO →

18
CDX-M1026ZG
8CH1: TEY 0.2V/div.
9CH2: TD 0.5V/div.
Normal mode: During AGC
1CH1: RFO 1V/div.
^CH2: HOLD 5V/div.
Normal mode: The defect part passes
800µm
1ms/div. 0.5ms/div 3CH1: FD 1V/div.
^CH2: HOLD 5V/div.
Normal mode: The defect part passes
800µm
0.5ms/div
GND →GND →
REFO →
REFO →
REFO →

19
CDX-M1026ZG

20
CDX-M1026ZG
1234
1234
D
C
B
A
B
3.3 EXTENSION UNIT
B
MAIN PCB
A
CD CORE UNIT