LG LSS-3200A Service Manual page 31

(A) Power check
2.5V is supplied to L101?
YES
3.3V is supplied to IC104(37), IC105
(37), IC102(1), IC103(1), and IC201(3)?
YES
3.3V is supplied to IC106(14) and
IC108(14)?
(B) Clock check
25MHz clock is output from X101(3)?
Fig. 01
YES
37.5MHz clock is input to IC201(87)?
Fig. 02
YES
8MHz clock is input to IC210(2)?
Fig. 03
Fig. 01
X101(3) : 25MHz CPU Clock
NO
Power Supply Check
IC954(3) : 2.5V
NO
Power Supply Check
IC950(2) : 3.3V
NO
Power Supply Check
IC950(2) : 3.3V
NO
NO
Check IC101 & IC201
NO
3-22
Check X100
Check IC210