Sylvania 6842PE M, Service Manual, Page: 29 / 82

1-7-3 L0604TR
Pin (9) on IC202,IC203 Pin (30) on IC205
Pin (10) on IC202,IC203 Pin (29) on IC205
Pin (11) on IC202,IC203 Pin (28) on IC205
Pin (3) on IC202 Pin (5) on IC801
Pin (3) on IC203 Pin (2) on IC801
Pin (7) on IC801 Pin (1) on CN802
Pin (12) on IC801 Pin (1) on CN801
L
L
L
L
Video 1
Video 2
Component 1
Component 2
L
L
H
H
L
H
L
H
IC203 Pin (3) [J148] L-CH
IC202 Pin (3) [J142] R-CH
IC801 Pin (5) L-CH
IC801 Pin (2) R-CH
Is audio signal inputted to each pins on IC801?
CN802 Pin (1) L-CH
CN801 Pin (1) R-CH
Is each audio signal inputted to Pin (1) on
CN801 and Pin (1) on CN802?
IC801 Pin (7) L-CH
IC801 Pin (12) R-CH
Is audio signal outputted to each pins on IC801?
Is audio signal outputted to each pins on IC202
and IC203?
[****] is the check point on the componet side.
Is +6.5V signal inputted to Pin (16) on IC202
and Pin (16) on IC203?
Is +21V signal inputted to Pin (10) on IC801?
Is input switching signal inputted to each pins on
IC202 and IC203?
[****] is the check point on the componet side.
No
No
No
No
No
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Check lines between each pins on IC203 and
each pins on IC205, between each pins on IC202
and each pins on IC205 and service it if defective.
Check lines between each pins on IC203 and
each pins on IC801, between each pins on IC202
and each pins on IC801 and service it if defective.
Check lines between Pin (1) on CN801 and each
pins on IC801, between Pin (1) on CN802 and
each pins on IC801 and service it if defective.
Check +6.5 V line and service it if defective.
Check +18 V line and service it if defective.
Replace Speaker (SP801 or SP802).
Replace IC202 or IC203.
Is the "L" pulse supplied to the base of Q801?
Replace IC801. Replace IC205.
Yes
A
Pin (9)
[Q205-C]
Pin (9)
[Q204-C]
Pin (9)
[Q203-C]