Read Sharp PZ-50HV2E (serv.man9) Service Manual online
39
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
Kind and function of the various protection circuit (P.D. circuit)
Reference
OVP : Over Voltage Protect
UVP : Under Voltage Protect
OCP : Over Current Protect
OVP : Over Voltage Protect
UVP : Under Voltage Protect
OCP : Over Current Protect
Note 1: AC200V P.D. is not applicable to the PZ-50HV2/2E and PZ-50HV2U models.
Assy Name
Red LED
Number of
Blinks
Kind of P.D.
Circuit
Function
Remarks
Y DRIVE Assy
1
VCP OCP
P.D. by VCP overcurrent
2
VOFS OVP
P.D. by VOFS overvoltage
VOFS UVP
P.D. by VOFS undervoltage (= overcurrent)
VH OVP
P.D. by VH overvoltage
VH UVP
P.D. by VH undervoltage (= overcurrent)
IC5V UVP
P.D. by IC5V undervoltage (= overcurrent)
X DRIVE Assy
3
VRN OVP
P.D. by VRN overvoltage
VRN UVP
P.D. by VRN undervoltage (= overcurrent)
4
VCP OCP
P.D. by VCP overcurrent
RESET OCP
P.D. by reset circuit overcurrent
SW POWER SUPPLY
Module
Module
5
VSUS OVP
P.D. by VSUS overvoltage
VSUS UVP
P.D. by VSUS undervoltage (= overcurrent)
VADR OVP
P.D. by VADR overvoltage
VADR UVP
P.D. by VADR undervoltage (= overcurrent)
15V OVP
P.D. by 15V overvoltage
15V UVP
P.D. by 15V undervoltage (= overcurrent)
12V UVP
P.D. by 12V undervoltage (= overcurrent)
6.5V OVP
P.D. by 6.5V overvoltage
6.5V UVP
P.D. by 6.5V undervoltage (= overcurrent)
13.5V UVP
P.D. by 13.5V undervoltage (= overcurrent)
-9V UVP
P.D. by -9V undervoltage (= overcurrent)
+B OVP
P.D. by +B overvoltage
+B OCP
P.D. by +B overcurrent
AC200V P.D.
P.D. by AC200V apply
Note 1
PFC module overheat protection
VSUS arc resistance overheat protection
ADR CONNECT Assy
6
ADR.PD
P.D. by disconnecting the connector
RESONANCE Assy
7
ADR.K.PD
P.D. by ICP open and TCP defective
DIGITAL VIDEO Assy
8
5.0V OVP
P.D. by 5V overvoltage
5.0V UVP
P.D. by 5V undervoltage (= overcurrent)
3.3V OVP
P.D. by 3.3V overvoltage
3.3V UVP
P.D. by 3.3V undervoltage (= overcurrent)
2.5V OVP
P.D. by 2.5V overvoltage
2.5V UVP
P.D. by 2.5V undervoltage (= overcurrent)
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