Samsung YP-R1 Service Manual page 24

4-1-4 If FM doesn't work
If FM doesn't work
Is audio signal present?
Yes
1
Is the 32.768 clock displayed?
(R118)
Yes
 See the waveform and
Replace the board.
(Detailed inspection is
required.)
Samsung Electronics
No
No
the image in Fig. 4-5.
Does U701 work?
Yes
Does X402 work?
Yes
No
Replace U701.
Replace the board.
(Detailed inspection is
required.)
No
Replace X402.
Troubleshooting
4-9