Pioneer AVD-505 User manual

COLOR DISPLAY
• AVD-505/US
COLOR DISPLAY
AVD-505 US,EW
Se r v i c e
M a nu a l
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. 501 Orchard Road, #10-00, Wheelock Place, Singapore 23880
C PIONEER ELECTRONIC CORPORATION 1998
ORDER NO.
CRT2239
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST.......................2
3. SCHEMATIC DIAGRAM .............................................6
4. PCB CONNECTION DIAGRAM ................................14
5. ELECTRICAL PARTS LIST ........................................19
6. ADJUSTMENT..........................................................23
7. GENERAL INFORMATION .......................................25
7.1 IC ........................................................................25
7.2 DISASSEMBLY ...................................................28
7.3 BLOCK DIAGRAM ..............................................29
8. OPERATIONS AND SPECIFICATIONS.....................30
K-ZZD. JULY 1998 Printed in Japan
-Precautions on Safety for Replacement of Backlight
• High voltage is generated in the inverter when the power is supplied to the system. To avoid an electric
shock, reconfirm that the power switch is set to OFF before starting operation.
• The fluorescent tube and high-voltage parts have high temperature immediately after the power
switch of the main unit is set to OFF. To avoid burning your hand or similar accidents, wait awhile after
turning the power to OFF, then start operation.
• High voltage may be charged to the inverter immediately after the power switch of the main unit is set
to OFF. Wait awhile after turning the power to OFF, then start operation.
• In some cases, the fluorescent tube of backlight may be damaged. Take adequate caution for injury
during operation.

2
AVD-505
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
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

3
AVD-505
NOTE:
-Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List.
-Screws adjacent to Ñmark on the product are used for disassembly.
-Owner's Manual
Model Part No. Language
AVD-505/US CRB1419 English
AVD-505/EW CRD2630 English, Spanish, German, French, Italian, Dutch
* 1 Card See Contrast table (2)
* 2 Bracket CNC5685
3 Bracket CNC7617
* 4 Screw Assy CEA2459
5 Screw BMZ40P040FZK
6 Washer CBE1044
7 Screw HMB40P060FZK
8 Cushion Assy CEA2476
* 9 Cushion CNM6042
10 Polyethylene Bag See Contrast table (2)
11 Carton See Contrast table (2)
12 Contain Box See Contrast table (2)
13 Protector CHP2024
14 Protector CHP2025
15 Owner’s Manual See Contrast table (2)
* 16 Polyethylene Bag E36-634
17 Cushion See Contrast table (2)
* 18 Bracket Assy CEA2458
* 19 Warranty Card See Contrast table (2)
20 Mounting Base See Contrast table (2)
21 Inner Box See Contrast table (2)
22 Cover CNV5716
(1) PACKING SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
(2) CONTRAST TABLE
AVD-505/US and AVD-505/EW are constructed the same except for the following:
Part No.
Mark No. Description AVD-505/US AVD-505/EW
* 1 Card ARY1048 Not used
10 Polyethylene Bag CEG1173 CEG-162
11 Carton CHG3588 CHG3566
12 Contain Box CHL3588 CHL3566
15 Owner’s Manual CRB1419 CRD2630
17 Cushion Not used CNM4680
* 19 Warranty Card Not used CRY1088
20 Mounting Base Not used CXB3063
21 Inner Box Not used CHW1748

4
AVD-505
2.2 EXTERIOR

5
AVD-505
1 Bracket CNC7617
2 Screw BPZ20P050FMC
3 Screw BPZ26P120FZK
4 Knob CAC5356
5 Knob CAC5540
6 Screw CBA1082
7 Screw CBA1154
8 Spring CBH1708
9 Spring CBH2094
* 10 Connector CKS3765
11 Holder CNC6326
12 Cushion CNM5900
13 Cushion CNM5905
14 Cover CNM5958
15 PCB CNP5055
16 Case CNS4801
17 Speaker CPV1041
18 Display Assy CXB2131
19 Back Light Unit CAX1027
20 IC(IC1701) SBX8035
21 LCD Panel CAY1033
22 Shield CNC7351
23 Shield CNC7952
24 Insulator CNM5864
25 LCD Unit CWM5724
26 Connector(CN1003) CKS1962
27 Connector(CN1201) CKS3124
28 Connector(CN1151) CKS3192
29 Connector(CN1601) CKS3657
30 Spacer CNM5468
31 Grille Assy See Contrast table (2)
32 Slider Unit CXB2312
33 Screw BPZ26P080FZK
34 Screw CBA1082
35 Screw CBA1083
36 Cord Assy CDE5561
37 Bracket CNC7510
38 Bracket CNC7511
39 Case CNS4816
40 Cover CNS4883
41 Cover CNS4884
42 Screw CPZ26P080FZK
43 Plug(CN2002) CKS3274
44 Plug(CN2003) CKS3282
* 45 Connector(CN2001) CKS3764
* 46 Gathering PCB CNX2872
47 Bracket CNC5685
* 48 Cushion CNM6042
49 Washer CBE1044
50 Screw HMB40P060FZK
51 Screw BMZ40P040FZK
52 Mounting Base See Contrast table (2)
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
(2) CONTRAST TABLE
AVD-505/US and AVD-505/EW are constructed the same except for the following:
Part No.
Mark No. Description AVD-505/US AVD-505/EW
31 Grille Assy CXB3537 CXB2132
52 Mounting Base Not used CXB3063

6
AVD-505
A
1234
B
C
D
1234
4
5
6
RED SIGNAL
SYNCHRONIZING SIGNAL
REMOTE CONTROL SENSOR
DC-DC CONVERTER
DC-AC
INVERTER
SWITCHING
REGULATOR
7.75V
23
24
2
3
1
LCD UNIT
A
RELAY UNIT
B
A-a A-b
A-aA-a A-bA-b
A-bA-b
A-aA-a
Large size
SCH diagram
Guide page
Detailed page
3. SCHEMATIC DIAGRAM
3.1 LCD UNIT AND RELAY UNIT(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

7
AVD-505
5678
A
B
C
D
5678
7
8
19 18
17
14
15
16
22
21
20
13
12
11
10
9
BRIGHT
VOLUME
BUFFER
LCD CONTROL
COM AMP
VIDEO SIGNAL PROCESSOR
CLAMP
CIRCUIT
-8.9V
-10.9V
-16.0V
A
A-b

8
AVD-505
A
1234
B
C
D
1234
RED SIGNAL
SYNCHRONIZING SIGNAL
REMOTE CONTROL SENSOR
DC-DC CONVERTER
BUFFER
CLAMP CIRCUIT
SWITCHING REGULATOR
23
24
1
LCD UNIT
A
Y UNIT
A-a A-b
A-a
B

9
AVD-505
5678
A
B
C
D
5678
4
5
6
7
DC-AC INVERTER
REGULATOR
7.75V
2
3
RELAY UNI
B
A-a
A-a A-b
B

10
AVD-505
A
1234
B
C
D
1234
19 18
17
14
15
16
22
21
20
13
12
11
10
9
LCD CONTROL
COM AMP
-8.9V
-10.9V
-16.0V
A-a A-b
A-b