15
SX80J9
15-2
15-1
Circuits to be checked:
• Power circuit.
• Micon circuit.
• Protector circuit
• Peripheral circuit of
Bus Line.
Check the
peripheral circuit
of IC1751,
IC1703, IC1004.
Check the
power circuit
consisting of
T1701,IC1701
etc.
Normal
Check F1701.
Replace the Fuse.
Is the Fuse again blown out?
Does 5V appear at pin (64) of IC1001.
Blown out
A
No
No
Yes
Yes
Check IC1001,
Q1012, Q1751
and IC1003.
B
E
2
PROM
(IC1002)
AV-SW
(IC451)
VCD1
(IC801)
SECAM
(IC901)
PDC
(IC1502)
S-CONTROL
(IC303)
IGR
(IC2302)
PLL1
(TU201)
VCD2
(IC4900)
PIP
(IC4901)
NICAM
(IC2303)
TEXT
(IC1802)
PLL2
(TU101)
DCF
(IC5461)
Lights up
turn off
2 sec
1 sec
Other pattern:
Other I
2
C bus control ic or unit.
(It has SDA and SCL PORT.)
TROUBLE SHOOTING TABLE (Continued)
TROUBLE SHOOTING TABLE (Continued)
Содержание SX80J9
Страница 21: ...21 17 16 19 18 15 14 13 12 11 10 SX80J9 PWB C POWER UNIT ...
Страница 22: ...22 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 WAVEFORMS ...
Страница 25: ...25 17 16 19 18 15 14 13 12 11 10 SX80J9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT UNIT ...
Страница 26: ...26 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 SCHEMATIC DIAGRAM MAIN Unit 1 ...
Страница 27: ...27 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 28: ...28 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 SCHEMATIC DIAGRAM MAIN Unit 2 ...
Страница 29: ...29 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 30: ...30 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 SCHEMATIC DIAGRAM POWER Unit ...
Страница 31: ...31 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 32: ...32 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 SCHEMATIC DIAGRAM NICAM IGR Unit ...
Страница 33: ...33 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 34: ...34 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 SCHEMATIC DIAGRAM P IN P Unit ...
Страница 35: ...35 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 36: ...36 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM DIG COM Unit ...
Страница 37: ...37 17 16 19 18 15 14 13 12 11 10 SX80J9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM TEXT Unit ...
Страница 38: ...38 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 BLOCK DIAGRAM ...
Страница 39: ...39 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 40: ...40 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 PRINTED WIRING BOARD ASSEMBLIES PWB A MAIN Unit Wiring Side ...
Страница 41: ...41 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 42: ...42 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 PWB A MAIN Unit Chip Parts Side ...
Страница 43: ...43 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 44: ...44 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 PWB C POWER Unit Wiring Side ...
Страница 45: ...45 17 16 19 18 15 14 13 12 11 10 SX80J9 ...
Страница 46: ...46 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SX80J9 6 5 4 3 2 1 A B C D E F G H PWB B CRT Unit Wiring Side ...