Technics SL-1500C

16
5.5. LED No Illumination
5.5.1. LEDs for speed select buttons (both [33] and [45]) --- No Illumination
Is the clock
(X1001) for microcomputer
(IC1001) oscillated?
YES
Strobe light --- No Illumination
Replace MAIN PCB.
NO
Replace MAIN PCB.
NO
Replace PANEL PCB.
Is the correct
voltage presented
at Pin 2 (CK2120)
of connector P1001 on MAIN PCB?
Normal : +24V
YES
X1001 : 17.6904MHz
CK2120
MAIN PCB
Pin 2 of connector P1001
IC1001
microcomputer
MAIN PCB
Pin 1 (Probe)
MAIN PCB
X1001 : 17.6904MHz
Pin 2 (GND)