Pll System Check; Pdout - Sharp XL-DK225 Service Manual

(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.
6
28
IC1
7
27
IC1
1
22
IC1
7 – 4

PDOUT 0

PDOUT 1
FDO
Figure 6
XL-DK225