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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 1998
K-ZZD. NOV. 1998 Printed in Japan
ORDER NO.
CRT2301
SOURCE/ OFF
AUDIO
FUNC
P
6
5
4
3
2
1
DISP
BAND
HIGH POWER CD PLAYER WITH FM/AM TUNER
DEH-66DH
UC
Service
Manual
- See the separate manual CX-597(CRT1829) for the CD mechanism description, disassembly and circuit
description.
- The CD mechanism employed in this model is one of S7 series.
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................2
3. SCHEMATIC DIAGRAM ...........................................12
4. PCB CONNECTION DIAGRAM ................................32
5. ELECTRICAL PARTS LIST ........................................43
6. ADJUSTMENT..........................................................51
7. GENERAL INFORMATION .......................................58
7.1 PARTS .................................................................58
7.1.1 IC................................................................58
7.1.2 DISPLAY ....................................................62
7.2 DIAGNOSIS ........................................................63
7.2.1 DISASSEMBLY .........................................63
7.2.2 TEST MODE ..............................................64
7.3 BLOCK DIAGRAM ..............................................66
8. OPERATIONS AND SPECIFICATIONS.....................68
DEH-66DH
- CD Player Service Precautions
1. For pickup unit(CXX1230) handling, please refer
to"Disassembly"(CX-597 Service Manual CRT1829).
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 55).
DEH-46DH UC


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2
DEH-66DH,46DH
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
1. SAFETY INFORMATION
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
25
23
5
3
2
26
22
27
1
30
11
- DEH-66DH


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3
DEH-66DH,46DH
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.
- PACKING SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
19
11
24
21
14
20
16
18
17
15
13
12
4
6
28
29
8
9
10
7
3
1-1 Owner's Manual
CRD2869
(English, French)
1-2 Installation Manual
CRD2870
(English, French)
1-3 Polyethylene Bag
CEG1116
*
1-4 Warranty Card
CRY1070
*
1-5 Label
CRW1343
*
1-6 Caution Card
CRP1158
2 Cord Assy
CDE5885
3 Remote Control Assy
CXB3488
4 Belt
CZN6416
5 Detach Case Assy
CXB3705
6 Holder Assy
CZX3173
7 Screw Assy
CZE3169
*
8 Screw
RMZ30H060FBK
*
9 Hexagonal Wrench
CZE3176
*
10 Polyethylene Bag
CEG-127
11 Accessory Assy
CEA2006
12 Screw
BSZ30P050FMC
13 Nut
CBN1012
*
14 Polyethylene Bag
CEG1101
15 Spacer
CLA2598
16 Bracket
CNC6767
17 Bracket
CNC5506
18 Bracket
CNC5507
19 Bracket
CNC5686
20 Bracket
CNC5687
21 Bolt Unit
CXA7960
22 Cover
CEG1228
23 Carton
CHG3678
24 Bolt Unit
CXA7961
25 Contain Box
CHL3678
26 Protector
CHP2113
27 Protector
CHP2114
28 Holder Assy
CZX3172
29 Remote Control Assy
CZX3231
30 Battery
CEX1030


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4
DEH-66DH,46DH
- DEH-46DH
25
23
5
2
26
22
27
1
11
19
11
24
21
14
20
16
18
17
15
13
12


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5
DEH-66DH,46DH
- PACKING SECTION PARTS LIST
Mark No. Description
Part No.
*
1-1 Card
ARY1048
1-2 Owner's Manual
CRD2871
(English, French)
1-3 Installation Manual
CRD2872
(English, French)
1-4 Polyethylene Bag
CEG1116
2 Cord Assy
CDE5885
3,4 ·····
5 Detach Case Assy
CXB3705
6-10 ·····
11 Accessory Assy
CEA2006
12 Screw
BSZ30P050FMC
13 Nut
CBN1012
*
14 Polyethylene Bag
CEG1101
15 Spacer
CLA2598
16 Bracket
CNC6767
17 Bracket
CNC5506
18 Bracket
CNC5507
19 Bracket
CNC5686
20 Bracket
CNC5687
21 Bolt Unit
CXA7960
22 Cover
CEG1228
23 Carton
CHG3677
24 Bolt Unit
CXA7961
25 Contain Box
CHL3677
26 Protector
CHP2113
27 Protector
CHP2114