Sharp DX-361HM Service Manual page 18

® TROUBLESHOOTING
G
Remove the cabinet and follow the troubleshooting instructions.
~
Power
Switch Check point
ON
I
LED301
I
OFF
I
Fuses F201 and F202.
Power Transformer T201.
The display tube
~ +8V and -8V Lines.
A-1
does not go on.
+5V Line.
LED301
I
Output from pins 15
(12
C)
ON I
and 24
(12
D) of IC4.
Signals of-lC4 (See Table 1).
Connectors CNS4 and CNP4.
Check point
A-2 Click and plop.
-8V Line.
Transistors
os.
Q1O, Q12, Q13,
Q18~Q20.
Loading
a Disc
Check point
Tray switch SW1.
A-3
The disc tray
Tray mechanism.
does not function. Tray motor M1.
Connectors CNS6 and CNP6.
Connectors CNS4 and CNP4.
+8V and -8V lines.
A-4
The TOC is Power
B To page 21
not read.
OFF
Play
A-5
I
Error indication
Power
C To page 27
OFF
A-6
I
There is no audio
I
~I
Power
I
~[V
To page 32
OFF
output.
Check point
Transportation locks.
A-7
I
Shock sensitivity
Lens of optical pickup.
Disc.
Eye-pattern.
Output from pin 11 (TL) of IC1.
Output from pin 11 (RE in) of IC4.
Intermittent Power
I+Il
Track
See the error table
A-8
~
failure OFF
r-------
Track
»I
Play
-
in the Service
Power ON
Manual.
-18-