3-15
3. RF/Servo Circuit
Put disc in.
Disc ID is correct?
Does spindle rotate.
Check the RFL connection
between 2J3 and MT1389.
Proper RFL signal on
MT1389?
Laser off
Proper DMSO signal on
MT1389
Check DMSO related circuit
on MT1389.
Replace IC(5U1)
Check the cable connection
between spindle and main PCBA.
D
A.
Check the related circuit on
MT1389 RFL signal .
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Summary of Contents for DP170
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Page 17: ...3 9 3 10 LCD PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW TOP VIEW BOTTOM VIEW ...
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Page 34: ...3 26 2 Y IC604 PIN 21 FIG 9 2 3 C IC604 PIN 26 FIG 93 ...
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Page 51: ...3 54 3 55 MAIN PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...