CD-SW330
7 – 4
The RF waveform is normal and the time is displayed
normally, but no sound is produced. Or the sound has
dropouts.
(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 TMAX waveform. (Figure 6)
Check around Pins 72, 73, 74, 75, 76 and 78 on IC1.
Figure 6
IC1
IC1
IC1
IC1
(5) Others.
Is pin 65, 66 and 67 on IC1. (Figure 7) No There are too many error flags on a damaged disc which makes
error correction impossible.
Yes
Check again using a known good disc.
If OK, Check the unit.
Figure 7
IC1
IC1
IC1
67
66
65
9
10
11
BCKI
AIN
LRCKI