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PIONEER 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 CORPORATION 1999
K-ZZB. OCT. 1999 Printed in Japan
ORDER NO.
CRT2407
6 DISC IN-DASH CD CHANGER
6 DISC IN-DASH CD CHANGER
CDX-MG6346ZH
ES
Service
Manual
HONDA
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................3
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...10
4. PCB CONNECTION DIAGRAM ................................26
5. ELECTRICAL PARTS LIST ........................................42
6. ADJUSTMENT..........................................................46
7. GENERAL INFORMATION .......................................48
7.1 DIAGNOSIS ........................................................48
7.1.1 TEST MODE ..............................................48
7.1.2 DISASSEMBLY .........................................52
7.1.3 CONNECTOR FUNCTION DESCRIPTION .......56
7.2 IC ........................................................................57
8. OPERATIONS AND SPECIFICATIONS.....................61
VEHICLE
DESTINATION
PRODUCED AFTER
HONDA PART No.
ID No.
PIONEER MODEL No.
Not specified
THAILAND, AUSTRALIA
October 1999
08A06-3B5-300
CDX-MG6346ZH/ES
Not specified
THAILAND, AUSTRALIA
October 1999
08A06-3B5-310
CDX-MG6446ZH/ES
- This service manual should be used together with the following manual(s):
Model No.
Order No.
Mech. Module
Remarks
CX-890
CRT2376
G1
CD Mechanism Module:Circuit Description, Mechanism Operation, Disassembly
CDX-MG6446ZH ES
CDX-MG6346ZH/ES


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2
CDX-MG6346ZH,MG6446ZH
- CD Player Service Precautions
1. For pickup unit(CXX1311) handling, please refer
to"Disassembly"(see page 52).
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 ser-
vice pickup unit(see page 46).
- When the Repair is Complete
When the repair is complete, make the CD mechanism
ready for transportation implementing the following
procedures:
1. Press the changer side 1 and 4 simultaneously to turn
the ACC on.
2. As the ACC is turned on, the disc indicator blinks in
red.
3. When the blinking is stopped, the mechanism is
ready for the transportation.
4. Attach the Transportation Bracket (CNC7878). Now
you can transport it.(See the figure below)
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.
1. SAFETY INFORMATION
Transportation Bracket
(CNC7878)
Case
(CNB2354)


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CDX-MG6346ZH,MG6446ZH
1 Screw Assy
CEA2537
*
2 Polyethylene Bag
CEG-127
3 Screw
HMF40P060FZK
4 Screw
HMF50P080FMC
5 Owner's Manual(English) CRB1561
6 Polyethylene Bag
CEG1116
*
7 Sheet
CHW1402
8 Protector
CHP2123
*
9 Polyethylene Bag
E36-609
10 Protector
CHP2124
11 Carton(CDX-MG6346ZH/ES) CHG3909
Carton(CDX-MG6446ZH/ES) CHG3991
12 Contain Box(CDX-MG6346ZH/ES) CHL3909
Contain Box(CDX-MG6446ZH/ES) CHL3991
*
13 Band
CNF-512
Mark No. Description
Part No.
Mark No. Description
Part No.
- 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.
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
3


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4
CDX-MG6346ZH,MG6446ZH
2.2 EXTERIOR


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CDX-MG6346ZH,MG6446ZH
1 Screw
BMZ20P020FMC
2 Screw
BMZ26P030FMC
3 Screw
BMZ26P060FMC
4 Chassis Unit(CDX-MG6346ZH/ES) CXB3407
Chassis Unit(CDX-MG6446ZH/ES) CXB5581
5 Case
CNB2354
6 Side Frame
CNB2397
7 Bracket
CNC7878
8 Bracket(CDX-MG6346ZH/ES) CNC8026
Bracket(CDX-MG6446ZH/ES) CNC8816
9 Front Frame
CNC8110
10 Holder
CNC8111
11 Insulator
CNM5969
12 Insulator
CNM6112
13 PCB
CNP5516
14 Insulator
CNM6409
15 Holder
CNV5543
*
16 Caution Label
CRP1200
17 Extension Unit
CWM6677
18 Cord
CDE6148
19 Connector(CN102)
CKS2200
20 Connector(CN103)
CKS3597
21 Connector(CN701)
CKS3785
22 Connector(CN101)
CKS3989
23 Holder
CNC8031
24 Screw
BPZ20P060FMC
25 Button
CAC5864
26 Button
CAC5865
27 Door
CAT2003
28 Washer
CBF1038
29 Spring
CBH2201
30 Spring
CBH2200
31 Conductor
CNC8051
32 Lighting Conductor
CNV5901
33 Gear
CNV5547
34 Arm
CNV5548
35 Guide
CNV5880
36 Sheet
CNM6318
37 Double Faced Tape
CNM6424
38 Insulator
CNM6512
39 PCB
CNP5373
40 Bracket Unit
CXB3111
41 Grille Unit
CXB3409
42 Screw
IMS20P040FMC
43 CD Mechanism Module(G1) CXK4702
44 Screw
IMS20P040FMC
45 Screw
IMS26P040FMC
46 Cushion
CNV5674
47 Keyboard Unit
CWM6289
48 Transistor(Q708)
2SB1335A
49 Damper
CNV5120
50 Holder
CNC7826
51 Screw
CBA1250
52 Sheet
CNM5981
53 Connector(CN901)
CKS3785
54 Screw
IMS26P030FZK
55 Holder
CNC7477
56 Spring(Left Rear)
CBH2365
57 Spring(Right Rear)(Black) CBH2361
58 Spring(Front)
CBH2360
59 Spacer
CNM6658
60 Spacer
CNM6626
- EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
5