HCD-SHAKEX1/SHAKEX3/SHAKEX7
23
SECTION 5
TROUBLESHOOTING
Switching Regulator Diagnosis Flow (HCD-SHAKEX1/SHAKEX3)
The Output from Switching regulator is checked.
Is following power voltage up to standard?
Standby
Demo mode Power On
CN4 pin1
CN2 pin2-4
AC
IN
Ye
s
No
Ye
s
END
No
Check whether the state of the Cable and Outlet are normal.
If there are no problems, check circumference circuit for
Main on/Sub on Output of the Motherboard mount side.
Replaces Switching regulator if it is not up to standard.
The Power Control signal to Switching regulator is checked.
Is following power voltage OK?
Main on/Sub on
Standby
Demo mode Power On
CN 4 :pin8 Low (0V) Low (0V)
Hi (3.3V)
13.5V±0.5V
13.5V±0.5V
0V
0V
pin5
0V
0V
pin7
0V
0V
pin8-10
0V
0V
pin1
0V
0V
13.5V±0.5V
-62.5V±5%
-25.5V±5%
+25.5V±5%
+62.5V±5%
-45.5V±10%
(1) AC
input
(2) Fuse
(3) Sub Power transformer
(4) CN 4 Connector
pin1: Audio (13.5V)
pin2: Audio (GND)
pin3-4: LED (13.5V)
pin5-6: LED (GND)
(5) MAIN Power transformer
(6) CN 2 Connector
pin1: SPV (DC-45.5V)
pin2-4: -PVDD (DC-62.5V)
pin5: -VL (DC-25.5V)
pin6: GND
pin7: +VL (DC+25.5V)
pin8-10: +PVDD (DC+62.5V)
pin7: AC-Det
pin8: PCON
pin9: LOW AC
(6
)
(4
)
(3
)
(5
)
(2
)
(1
)
Ver. 1.1
