Haier DX-RCRT20-09 Service Manual page 23

5
No noise
Power amplifier is abnormal.
Inspect IC701 and peripheral
Inspect IC201 and peripheral
6.
Yes
Change V501 or
weld V501 again
Picture exists but no sound
Make C713/C714 open. Multimeter is at band RΧ1K. Red
probe connect to ground. Touch No.6 OR No.8 of IC701 with
components of IC701
Yes
Inspect C713、C714
Yes
component of IC201
Lack of red
Check to see if V501 is
open or not well welded
Inspect R502,R503,R504
Make C713 OR C714 collector
open. Touch No.6 OR No.8 of
Q702 with black probe to see if
Check to see if voltages of SK501
are normal
No
Inspect
23
Have noise
No
Check to see if
+16V exists
No
Inspect +16V
power supply
No
Yes
Inspect the circuit from
No.51 of IC201 to
No.3 of SK501