Casio PZ-3100, Руководство по обслуживанию

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*
Check circuit around IC108.
*
IC108 is defective.
3
Is IC108 pin 11 low ?
No
Yes
Does audio signal
appear at IC103 pins 67 (OUTR)
and 74 (OUTL) ?
Yes
Is IC103 pin 44 2.1 MHz
?
No
Yes
*
Check soldering around IC103 and
IC106.
*
IC103 or IC106 is defective.
Repair Item 3: No audio signal.
*
Check circuit around IC108.
*
IC108 is defective.
No
Is IC103 pin 40 (LRCLKI)
44.1 MHz ?
No
Yes
Does a digital
signal appear IC103 pin
42 (DATAI) ?
No
Yes
*
Check soldering around IC103 and
IC106.
*
IC103 or IC106 is defective.
9