Sharp CD-DK890N

CD-DK890N
7 – 4
(4) PLL system check.
When a disc is loaded, start play operation.
The RF waveform is normal, but the TOC data cannot be read.
Check the PDOUT waveform. (Figure 6)
Check around pins 26~30 on IC1.
Figure 6
IC1
IC1
IC1
28
22
27
1
7
6
PDOUT 1
PDOUT 0
FDO