Sharp PZ-50HV2E (serv.man34) Service Manual ▷ View online
37
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
When a module microcomputer failed in communication with a panel
microcomputer, this NG occurs.
Shut down after OSD display for 30 seconds from the NG detection.
microcomputer, this NG occurs.
Shut down after OSD display for 30 seconds from the NG detection.
Abnormality to expect
Open / Short of communication line in the Assy
Open / Short of communication line in the Assy
1
Panel microcomputer NG
When a module microcomputer failed in communication with outside
EEPROM or EXPANDER, this NG occurs.
Shut down after OSD display for 30 seconds from the NG detection.
* However, this communication NG may occur in the standby state.
EEPROM or EXPANDER, this NG occurs.
Shut down after OSD display for 30 seconds from the NG detection.
* However, this communication NG may occur in the standby state.
Abnormality to expect
• Open / Short of communication line in the DIGITAL VIDEO, MR INTERFACE
• Open / Short of communication line in the DIGITAL VIDEO, MR INTERFACE
and AUDIO Assys
• Breaking of wire of the following points is thought about.
DIGITAL VIDEO Assy (D1)
↔
SW POWER SUPPLY Module (P2)
DIGITAL VIDEO Assy (D3)
↔
MR INTERFACE Assy (R3)
MR INTERFACE Assy (R23)
↔
AUDIO Assy (A24)
System Cable
2
DIGITAL-IIC communication NG
When it becomes the dew drop state in this unit, this NG occurs.
After the dew drop detection, shut down immediately.
After the dew drop detection, shut down immediately.
Abnormality to expect for dew drop
Disconnect a connector CN2002 between Dew drop sensor and Y DRIVE Assy.
Disconnect a connector CN2002 between Dew drop sensor and Y DRIVE Assy.
3
Dew drop detection
When temperature of this unit became abnormally high, this NG occurs.
Shut down after OSD display from the NG detection for 30 seconds.
Note: When temperature fell down during indication, return to the normal operation.
Shut down after OSD display from the NG detection for 30 seconds.
Note: When temperature fell down during indication, return to the normal operation.
Abnormality to expect when it occurs in the environment that is not
high-temperature
• Disconnect a connector between DIGITAL VIDEO Assy (D18) and
high-temperature
• Disconnect a connector between DIGITAL VIDEO Assy (D18) and
temperature sensor 1 (TE1).
Shut down temperature of each temperature sensor
Sensor Temp 78
Sensor Temp 78
4
Temperature abnormality
Reference
Shut down diagnosis
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
11
12
13
14
15
16
17
18
CENTE
1 / 1 3
R Ve r s
OSD Ve r s i o n
CV I C Ve r s i o n
CV I C Ve r s i o n
TTXP Ve r s i o n
i on
MON I TOR Ve r s i on
Mod e l S l e
e
c t
i n
Ma
Mod e l S l e
e
c t AV
Mod e l S l e
e
c t
Ce n t e r
c u
A
t i me
MON I TOR
RESET
RESET
OFF
RESET
OFF
OFF
+
0
0
4
4
2 8
F 6 9 1 1 0
TTX
R
P G
W2 0 0 /
1 0 9
0
0 0
9 :
1 2
/
X2 0 0 /
1 0 9
0
0 7
9 :
1 2
/
V2 0
0 6 1
0 /
1 0 9
0
1 0
9 :
1 2
/
MR O D
S
2
0
1 0
9
A
/
/
0 1
0
MR M I
A N
0 0
2
1
E
- 0 5
- 0 0
PANEL Ve r s i on
FLASH Ve r s i on
FLASH Ve r s i on
MON I TOR Mo de l
Mon i t o r Ac u t i me
4 7
H
4 2 M
H
4 1 M
1 6
0 1
Pu l s e Ac u t i me
1 6 4
Se n s o r e Temp
0
2 5 H
9 /
/
NP
I
U
S
1
G
I
No
T
E06
E06
E04
38
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
Block Diagram of Power Down Signal System
Address PD
Mute
DIGITAL
DC-DC
X Drive
X DC-DC
OR
OR
PD Circuit
Y Drive
Y DC-DC
OR
Relay
Circuit
AND
OR
OR
OR
D8
D11
8
6
7
4
5
1
2
3
ADR CONNECT
ASSY
(Upper)
DIGITAL VIDEO ASSY
SW POWER
SUPPLY
MODULE
X DRIVE ASSY
Y DRIVE ASSY
ADR CONNECT
ASSY
(Lower)
RESONANCE
ASSY
(Upper)
RESONANCE
ASSY
(Lower)
-
D12
D16
D1
X1
P4
P2
P3
Y1
D17
D15
-
IC1201-pin 8
IC1201-pin 6
D1202 Cathode
DIG_ADR.PD
PD_TRIGGER
Note:
1
-
8
show LED flashing number of times when power down occurred in this route.
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)
40
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
PZ-50HV2U
Number
of
Blinks
P.D. Point in
Operation
Error Point
Possible Part of Error
Circuit State
Operation
P.D. Circuit
Diagnosis Condition
1
Y
DRIVE
IC22
0
6, IC22
14
(Pulse module), IC22
03, IC22
0
4
,
IC22
12, IC22
13, IC22
13, IC22
17, R22
0
9
K22
11
Lo
VCP OCP
2
Y
DC DC
VOFS D/D CONV. BLOCK (Y DRIVE Assy)
IC2
7
02, IC
2
7
0
9, IC2
7
15
K
2
7
12
Lo
VOFS OVP
VOFS D/D CONV. BLOCK (Y DRIVE Assy)
IC2
7
0
1,
IC2
7
02, IC
2
7
0
9, IC2
7
15
K
2709
L
o
VOFS UVP
Drive section (control signal, output elements etc.) in
normal operation
Q22
11
, Q22
12, R22
7
7, IC22
0
8, IC22
10
VOFS D/D CONV. BLOCK in normal operation
VH D/D CONV. BLOCK (Y DRIVE Assy)
IC2
7
12, IC2
7
16
K
2
7
19
Lo
VH OVP
VH D/D CONV. BLOCK (Y DRIVE Assy)
IC2
7
11
, IC2
7
12, IC2
7
16
K2
7
18 Lo
VH UVP
Drive section (control signal, output elements etc.) in
normal operation
SCAN (A), (B) Assy
SCAN IC
VH D/D CONV. BLOCK in normal operation
IC
5V D/D CONV. BLOCK (Y DRIVE Assy)
IC
2
7
0
4, IC2
7
0
6, IC2
7
17
SCAN Assy in normal operation
SCAN (A), (B) Assy
Y DRIVE Assy
SCAN IC
K2
7
13 Lo
IC
5V UVP
IC
5V D/D CONV. BLOCK in normal operation
IC
5V D/D CONV. BLOCK (Y DRIVE Assy)
IC
2
7
0
4, IC2
7
0
6, IC2
7
17
SCAN Assy in normal operation
3
X
DC DC
VRN D/D CONV. BLOCK (X DRIVE Assy)
IC3
7
02, IC3
7
12
K
3708
L
o
VRN OVP
VRN D/D CONV. BLOCK (X DRIVE Assy)
IC3
7
0
1,
IC3
7
02, IC3
7
12
K
3705
L
o
VRN UVP
Drive section (control signal, output elements etc.) in
normal operation
X DRIVE Assy
Q3
12
2
VRN D/D CONV. BLOCK in normal operation
4
X
DRIVE
X DRIVE Assy
IC32
0
0, IC32
0
1 (pulse module), IC3
103, IC3
10
4,
IC3
10
6, IC3
10
7, IC3
11
0, IC3
11
3, R3
10
9
K3
103 Lo
VCP OCP
Q3
12
2
K
3
102 Lo
VRN OCP
5
PS
X DRIVE Assy
IC32
0
0, IC32
0
1 (Pulse module)
When P4 connector disconnected, P.D. does not occur
Y DRIVE Assy
IC22
0
6, IC22
14
(Pulse module)
When P3 connector disconnected, P.D. does not occur
MX AUDIO Assy
IC860
1
(Audio IC)
When P6 connector disconnected, P.D. does not occur
When pin 5 of P2 connector disconnected, P.D. does
not occur
SW POWER SUPPLY Module
SW POWER SUPPLY Module
When the voltage is not output even if P4, P3 and P6
connectors disconnected
6
ADR
ADDRESS CONNECT A~D Assy
ADDRESS CONNECT A - D Assy,
RESONANCE Assy,
D/D CONV. BLOCK (DIGITAL VIDEO Assy)
Disconnect D8 - D15 connectors
7
ADR K
RESONANCE Assy
TCP damage of IC6704 (ICP), disconnect D16 and
D17 connectors, panel microcomputer is defective,
outside Flash ROM of the panel microcomputer is
defective.
8
DIGITAL
DC DC
D/D CONV. BLOCK (DIGITAL VIDEO Assy)
IC1901
K1
9
0
1 L
o
5.
0V OVP
ADR. PD
ADR. K. PD
K
19
02 Lo
5.
0V UVP
D/D CONV. BLOCK (DIGITAL VIDEO Assy)
IC1901
K
19
03 Lo
3.3V OVP
K
19
0
4
Lo
3.3V UVP
D/D CONV. BLOCK (DIGITAL VIDEO Assy)
IC1901
K
19
0
5
Lo
2.
5V OVP
K
19
0
6
Lo
2.
5V UVP
Diagnosis of the error point in the various protection circuit (P.D. circuit) operation (Red LED blinks)
Note: About PS PD
The condition that Red LED blinks five times
(power supply PD)
1
When the internal protection circuit of SW
POWER SUPPLY Module worked
2
When a microcomputer was not able to
identify the PD point
↓
Being careful because the protection circuit
of SW POWER SUPPLY Module cannot
conclude that worked.
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