Led No Illumination - Technics SL-1200MK7PP Service Manual

5.5.

LED No Illumination

5.5.1. Strobe light --- No Illumination
Strobe light --- No Illumination
Is the clock
(X1001) for microcomputer
(IC1001) oscillated?
Is the correct
voltage presented
at Pin 3 (CK2152) or
Pin 4 (CK2151) of connector P1001
on MAIN PCB?
Normal : +24V
Replace STROBE PCB.
NO
Replace MAIN PCB.
YES
NO
YES
MAIN PCB
Pin 3 or 4 of connector P1001
X1001 : 17.6904MHz
IC1001
microcomputer
Pin 1 (Probe)
Replace MAIN PCB.
CK2151
14
MAIN PCB
Pin 2 (GND)
X1001 : 17.6904MHz
CK2152
MAIN PCB