Q821 Collection Volt Check
31K: 5V, 68K: 13V
91K:15V
IC401 PIN6 Volt Check
31K: 4.4V, 68K: 1.4V
91K: 0.5V
S1~S4 signals are right at
each frequency block?
- 26 -
9. S Correction Failure
Check S1 ~ S4 signal.
Refer to the S-corrction table page?
NO
Check and replace IC401.
Check and replace
C723, C726,C729,C737
Q721
Q711 ~ Q713, Q714~Q717
YES
YES
YES
10. H_Lin. Failure
NO
Replace IC401.
Check L703
NO
Check 15 V line.
Check some parts around Q821.
Cs SIGNAL TABLE
CS1
CS2
CS3
CS4
29=<Hf<34kHZ
L
L
L
L
34=<Hf<39kHZ
L
H
H
L
39=<Hf<44kHZ
H
L
L
L
44=<Hf<49kHZ
H
L
L
L
49=<Hf<52kHZ
H
L
H
L
52=<Hf<58kHZ
H
L
H
L
58=<Hf<62kHZ
H
L
H
H
62=<Hf<66kHZ
H
L
H
H
66=<Hf<71kHZ
H
H
H
L
71=<Hf<76kHZ
H
H
H
L
76=<Hf<81kHZ
H
H
H
L
81=<Hf<84kHZ
H
H
H
H
84=<Hf<89kHZ
H
H
H
H
89=<Hf<95kHZ
H
H
H
H
95=<Hf<120kHZ
H
H
H
H
HORIZONTAL
FREQUENCY(fH)