Sharp PZ-50HV2U Service Manual page 37

Shut down diagnosis
1 Panel microcomputer NG
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.
Abnormality to expect
Open / Short of communication line in the Assy
2 DIGITAL-IIC communication 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.
Abnormality to expect
• 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)
DIGITAL VIDEO Assy (D3)
MR INTERFACE Assy (R23)
System Cable
3 Dew drop detection
When it becomes the dew drop state in this unit, this NG occurs.
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.
4 Temperature abnormality
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.
Abnormality to expect when it occurs in the environment that is not
high-temperature
• Disconnect a connector between DIGITAL VIDEO Assy (D18) and
temperature sensor 1 (TE1).
Reference
Shut down temperature of each temperature sensor
Sensor Temp 78
SW POWER SUPPLY Module (P2)
MR INTERFACE Assy (R3)
AUDIO Assy (A24)
10
11
12
13
14
15
16
17
18
1 / 1 3
1
CENTE R Ve r s i on MR M I A N E
2
OSD Ve r s i on MR O D S 2 0 0 1
3
CV I C Ve r s i on
W2 0 0 / 1 0 9 / 1 2
4
TTXP Ve r s i on TTX P G R
5 F6 9 1 1 0
MON I TOR Ve r s i on
6
PANEL Ve r s i on - 0 0
7 - 0 5
FLASH Ve r s i on
8
MON I TOR Mode l 0 1
9
Mod e l S l e e c t Ma i n 0
Mod e l S l e e c t AV 4
Mod e l S l e e c t MON I TOR 0
Sen so r e Temp
+ 2 8
Cen t e r A cu t ime 1 6 H
RESET OFF
Mon i t o r Ac u t i me 4 7 H
RESET OFF
Pu l s e Ac u t i me 1 6 4
RESET OFF
37
PZ-50HV2, PZ-50HV2E
PZ-50HV2U
E06
E06
E04
I NP U T 1 No S I G
2 0 0 1 / 0 9 / 2 5 H
/ 0 9 / 1 0 A
0 9 : 0 0 X2 0 0 / 1 0 9 / 1 2 0 9 : 0 7 V2 0 0 / 1 0 9 / 1 2
0 6 1
4 1 M
4 2 M
0 9 : 1 0