Casio PZ-3100 Service Manual page 11

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