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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 NV
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2001
K-ZZU. MAY 2001 Printed in Japan
ORDER NO.
CRT2671
7 INCH WIDE AV SYSTEM DISPLAY
AVX-7300
UC
Service
Manual
CONTENTS
1. SAFETY INFORMATION............................................2
2. EXPLODED VIEWS AND PARTS LIST ......................2
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..10
4. PCB CONNECTION DIAGRAM................................28
5. ELECTRICAL PARTS LIST........................................41
6. ADJUSTMENT .........................................................49
7. GENERAL INFORMATION.......................................49
7.1 DIAGNOSIS ........................................................49
7.1.1 TROUBLESHOOTING ..............................49
7.1.2 DISASSEMBLY .........................................53
7.1.3 CONNECTOR FUNCTION DESCRIPTION57
7.2 IC
..................................................................58
7.3 EXPLANATION ...................................................62
7.3.1 MECHANISM DESCRIPTIONS ................62
7.3.2 OPERATIONAL FLOW CHART.................66
8. OPERATIONS AND SPECIFICATIONS ....................67
AVX-7300
EW
AVX-7300
ES
NOTE:
- Inverter for LCD back light becomes a high voltage.
- About FPC between control PCB and relay unit.
There is a direction of the connector and the installation is noted.
Please note that the length of the line is short at the time of detaching.


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2
AVX-7300
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
1. SAFETY INFORMATION
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 mot 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
20
12
7
3
2
5
4
9
1
24
8
15
14
13
14
13
6
10
23
21
27
22
19
11
16
17
18
25
26


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3
AVX-7300
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
- Owner's Manual and Installation Manual
Part No.
Language
CRB1741
English
CRB1715
Spanish
CRB1716
German
CRB1742
French
CRB1718
Italian
CRB1719
Dutch
CRB1720
Arabic
CRB1721
Portuguese(B)
CRD3482
English,French
CRD3481
English,Spanish,Dutch,German,French,Italian
CRD3483
English,Spanish,Arabic,Portuguese(B)
Part No.
Mark No. Description
AVX-7300/UC
AVX-7300/EW
AVX-7300/ES
1 Cord
CDE6573
CDE6573
CDE6573
2 Accessory Assy
CEA2876
CEA2876
CEA2876
3 Screw
BPZ20P060FMC
BPZ20P060FMC
BPZ20P060FMC
4 Screw
CBA1002
CBA1002
CBA1002
5 Bracket
CNC9383
CNC9383
CNC9383
6 Bush
CNV1917
CNV1917
CNV1917
7-1 Polyethylene Bag
CEG1116
CEG1116
CEG1116
7-2 Owner's Manual
CRB1741
CRB1741
CRB1741
7-3 Owner's Manual
CRB1742
CRB1715
CRB1715
7-4 Owner's Manual
Not used
CRB1716
CRB1720
7-5 Owner's Manual
Not used
CRB1742
CRB1721
7-6 Owner's Manual
Not used
CRB1718
Not used
7-7 Owner's Manual
Not used
CRB1719
Not used
7-8 Installation Manual
CRD3482
CRD3481
CRD3483
*
7-9 Card
ARY1048
Not used
Not used
* 7-10 Warranty Card
Not used
CRY1157
Not used
8 Carton
CHG4405
CHG4407
CHG4406
9 Contain Box
CHL4405
CHL4407
CHL4406
10 Screw(M4x3)
CBA1468
CBA1468
CBA1468
11 Sub Box
CHA3172
CHA3172
CHA3172
12 Polyethylene Bag
CEG1173
CEG-162
CEG-162
13 Protector
CHP2445
CHP2445
CHP2445
14 Protector
CHP2446
CHP2446
CHP2446
15 Protector
CHP2385
CHP2385
CHP2385
16 Protector
CHP2386
CHP2386
CHP2386
*
17 Fastener
CNM6544
CNM6544
Not used
*
18 Fastener
CNM6545
CNM6545
Not used
*
19 Polyethylene Bag
E36-615
E36-615
E36-615
20 Screw Assy
CEA2927
CEA2927
CEA2927
21 Screw
BMZ50P060FMC
BMZ50P060FMC
BMZ50P060FMC
*
22 Polyethylene Sheet
CNM4338
CNM4338
CNM4338
23 Screw
CMZ50P060FMC
CMZ50P060FMC
CMZ50P060FMC
24 Cord
CDE6570
CDE6570
CDE6570
25 Speaker Unit
CXB6699
CXB6699
Not used
26 Sheet
CNM7244
CNM7244
CNM7244
27 Polyethylene Bag
CEG1116
CEG1116
Not used


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4
AVX-7300
2.2 EXTERIOR(1/3)
A
E


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5
AVX-7300
1 Screw
BMZ20P030FZK
2 ·····
3 Screw
BMZ26P040FMC
4 Screw
BSZ26P050FMC
5 Screw(M1.7x3)
CBA1475
6 ·····
7 Resistor
RS1/2P102JL
8 ·····
9 Cord
CDE6573
10 Fuse(4A)
CEK1001
11 Cap
CNS1472
12 Screw
CMZ50P060FMC
13 Case
CNB2703
14 ·····
15 Bracket
CNC9389
16 Holder
CNC9510
17 Panel
See Contrast table(2)
18,19 ·····
20 Spring
CBH2479
21,22 ·····
23 Spacer
CNM7465
24 Spacer
CNM7466
25,26 ·····
27 Panel
See Contrast table(2)
28 Control Unit
See Contrast table(2)
29 Screw
BMZ26P200FMC
30 ·····
31 Transistor(Q33)
2SD2396
32 Cord
CDE6568
33 Grille Unit
See Contrast table(2)
34 ·····
35 Cable
CDE6575
36 Plug(CN401)
CKM1187
37 Jack(CN202)
See Contrast table(2)
38 Plug(CN402)
CKS-790
39-42 ·····
43 Connector(CN201)
CKS3645
44 ·····
45 Connector(CN651)
CKS3970
46 ·····
47 Grille Unit
See Contrast table(2)
48 Connector(CN101)
CKS4495
49 ·····
50 Bracket
CNC9371
51,52 ·····
53 Heat Sink
CNR1609
54 Screw
BPZ20P060FMC
55,56 ·····
57 Cover
CNS6570
58 Button
CAC6992
59 Button
CAC6993
60 Button
CAC6997
*
61 Cushion
CNM6270
62-64 ·····
65 Keyboard Unit
See Contrast table(2)
66 Button
See Contrast table(2)
*
67 Badge
CAH1786
68 Connector(CN1901)
CKS4511
69 Spacer
CNM7247
70-72 ·····
73 Button(RGB)
CAC7004
74 Button(V.SRC)
CAC7010
75 Detach Grille Assy
See Contrast table(2)
76,77 ·····
78 IC(IC1901)
TSOP1840SB1
(1) EXTERIOR(1/3) SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
(2) CONTRAST TABLE
AVX-7300/UC , AVX-7300/EW and AVX-7300/ES are constructed the same except for the following:
Part No.
Mark
No.
Description
AVX-7300/UC
AVX-7300/EW
AVX-7300/ES
17
Panel
CNC9691
CNC9691
CNC9704
27
Panel
CNS6571
CNS6571
CNS6627
28
Control Unit
CWM7742
CWM7741
CWM7743
33
Grille Unit
CXB7281
CXB7281
CXB7282
37
Jack(CN202)
CKN1027
CKN1027
Not used
47
Grille Unit
CXB7286
CXB7286
CXB7287
65
Keyboard Unit
CWM7747
CWM7746
CWM7747
66
Button
CAC6994
CAC6994
CAC7011
75
Detach Grille Assy
CXB7126
CXB7126
CXB7127