70
PDU-50WX2
When a module microcomputer failed in communication with a panel
microcomputer, this NG occurs.
Abnormality to expect
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.
* However, this communication NG may occur in the standby state.
Abnormality to expect
• Open / Short of communication line in the Assy
• Breaking of wire between DIGITAL VIDEO Assy (D1) and SW POWER
SUPPLY Module (P2).
2
DIGITAL-IIC communication NG
When it becomes the dew drop state in this unit, this NG occurs.
Abnormality to expect for dew drop
Disconnect a connector CN2002 between Dew drop sensor and Y DRIVE Assy.
3
Dew drop detection
• Disconnect a connector between DIGITAL VIDEO Assy (D18) and
temperature sensor 1 (TE1).
4
Temperature abnormality
Shut down diagnosis
Block Diagram of Shut Down Signal System
RXD
BUSY
REQ_PU
TXD
CLK
*PU_CE
DEW_DET
CN2002
TEMP1
INTERFACE ASSY
DIGITAL VIDEO ASSY
THERMAL SENSOR
ASSY
Y DRIVE ASSY
SW POWER SUPPLY
MODULE
IC1191
Panel UCOM
external Flash ROM
IC1204
EEPROM
IC1101
Panel UCOM
IC1207
Module UCOM
Expander
SCL
SDA
D3
D1
P2
D18
TE1
D6
Y2
1
4
3
2
IC8351
Thermal
Sensor 1
Moisture
Sensor
Note:
1
-
4
show LED flashing number of times when shut down occurred in this route.
Содержание PDU-50WX2
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