Table of Contents
Advertisement
Circuits to be checked:
• Power circuit.
• Micon circuit.
• Protector circuit
• Peripheral circuit of
Bus Line.
Normal
No
Does 5V appear at pin (64) of IC1001.
No
Check the
Check IC1001,
peripheral circuit
Q1012, Q1751
of IC1751,
and IC1003.
IC1703, IC1004.
A
Check F1701.
Blown out
Replace the Fuse.
Is the Fuse again blown out?
Yes
Check the
power circuit
consisting of
Yes
T1701,IC1701
etc.
E
2
PROM
(IC1002)
AV-SW
(IC451)
VCD1
(IC801)
SECAM
(IC901)
B
PDC
(IC1502)
S-CONTROL
(IC303)
IGR
(IC2302)
PLL1
(TU201)
VCD2
(IC4900)
PIP
(IC4901)
NICAM
(IC2303)
TEXT
(IC1802)
PLL2
(TU101)
DCF
(IC5461)
2 sec 1 sec
2
Other pattern:
Other I
C bus control ic or unit.
(It has SDA and SCL PORT.)
Lights up
turn off
Advertisement
Table of Contents
