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AV SYSTEM MONITOR
AVX-505
UC
S
ervice
M
anua
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, Lane Wheelock Place, Singapore 23880
C
PIONEER ELECTRONIC CORPORATION 1998
ORDER NO.
CRT2192
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................2
3. SCHEMATIC DIAGRAM ...........................................10
4. PCB CONNECTION DIAGRAM ................................30
5. ELECTRICAL PARTS LIST ........................................42
6. ADJUSTMENT..........................................................49
7. GENERAL INFORMATION .......................................50
7.1 IC ........................................................................50
7.2 DIAGNOSIS ........................................................51
7.2.1 DISASSEMBLY...........................................51
7.2.2 TROUBLESHOOTING FOR
LCD 5.5 MONITOR ....................................58
7.3 EXPLANATION ...................................................68
7.3.1 MECHANISM DESCRIPTIONS ..................68
7.3.2 BLOCK DIAGRAM......................................70
8. OPERATIONS AND SPECIFICATIONS.....................71
K-FED. APR. 1998 Printed in Japan
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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 cold cathode tube of backlight may be damaged. Take adequate caution for injury
during operation.
Summary of Contents for AVX-505
Page 6: ...6 AVX 505 2 4 EXTERIOR 1 ...
Page 8: ...8 AVX 505 2 5 EXTERIOR 2 ...
Page 11: ...11 AVX 505 5 6 7 8 A B C D 5 6 7 8 A SPEAKER C AUDIO VISUAL MASTER UNIT ...
Page 12: ...12 AVX 505 A 1 2 3 4 B C D 1 2 3 4 A 3 2 ENCODER UNIT C ...
Page 13: ...13 AVX 505 5 6 7 8 A B C D 5 6 7 8 G E D F C C D E F ...
Page 14: ...14 AVX 505 A 1 2 3 4 B C D 1 2 3 4 3 3 KEYBOARD UNIT B A B ...
Page 15: ...15 AVX 505 ...
Page 16: ...16 AVX 505 A 1 2 3 4 B C D 1 2 3 4 3 4 PCB UNIT LCD 5 5 MONITOR 1 5 G1 5 C CN939 ...
Page 17: ...17 AVX 505 5 6 7 8 A B C D 5 6 7 8 G1 5 ...
Page 18: ...18 AVX 505 A 1 2 3 4 B C D 1 2 3 4 2 5 G2 5 ...
Page 19: ...19 AVX 505 5 6 7 8 A B C D 5 6 7 8 G2 5 ...
Page 20: ...20 AVX 505 A 1 2 3 4 B C D 1 2 3 4 3 5 G3 5 ...
Page 21: ...21 AVX 505 5 6 7 8 A B C D 5 6 7 8 G3 5 ...
Page 22: ...22 AVX 505 A 1 2 3 4 B C D 1 2 3 4 4 5 G4 5 ...
Page 23: ...23 AVX 505 5 6 7 8 A D 5 6 7 8 G4 5 ...
Page 24: ...24 AVX 505 A 1 2 3 4 B C D 1 2 3 4 G5 5 5 5 ...
Page 28: ...28 AVX 505 fi U401 5 500mV div 20µs div fl CN1 14 200mV div 200µs div ...
Page 29: ...29 AVX 505 ...
Page 31: ...31 AVX 505 5 6 7 8 A B C D 5 6 7 8 RESET A SIDE A CN932 C SPEAKER CORD ASSY ...
Page 32: ...32 AVX 505 A 1 2 3 4 B C D 1 2 3 4 A A MICRO COMPUTER UNIT ...
Page 33: ...33 AVX 505 5 6 7 8 A B C D 5 6 7 8 A SIDE B ...
Page 37: ...37 AVX 505 5 6 7 8 A B C D 5 6 7 8 ANGLE DOWN ANGLE UP SIDE A SIDE B A CN100 B ...
Page 38: ...38 AVX 505 A 1 2 3 4 B C D 1 2 3 4 4 4 PCB UNIT LCD 5 5 MONITOR G G PCB UNIT C CN939 ...
Page 39: ...39 AVX 505 5 6 7 8 A B C D 5 6 7 8 G SIDE A ...
Page 40: ...40 AVX 505 A 1 2 3 4 B C D 1 2 3 4 G PCB UNIT G ...
Page 41: ...41 AVX 505 5 6 7 8 A B C D 5 6 7 8 G SIDE B ...