Sharp MD X5 Service Manual download pdf (Page 71)

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MD-X5H/CP-X5H

• Check the tracking system.

Data cannot be read.

Check the waveform of IC1 pin 7 (TE).

The waveform shown in Figure 71 appears.

The discless state appears soon.

Yes

Check the periphery from the IC1 pin 8

to pin 15, from IC5 to CNP2.

The tracking servo does not

operate.

Check the VCO-PLL system.

Yes

Playback is enabled in the TEST mode.

Yes

Normal jump is

impeded, and top

of music number is

not found.

Although IL is

possible, playback is

impossible.

Yes

Check the periphery

of IC1 pin 14.

Figure 71

5ms

1.00 V

IC1 7 TE

5 ms

5.0 V

IC1 54 DRF

• Check the spindle system

Yes

Playback operation is done without disc.

The turntable rotates insignificantly.

The turntable does not rotate or rotates with high speed.

The spindle driver is normal.

Check the periphery from IC1 pin 23 to pin 27, pin 39, pin 40, IC2

pin 12, pin 13, from IC5 to CNP3.

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 103 104

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Sharp MD X5 Service Manual Page 71