SANY LATIN AMERICA
7-78
SY195/205/215/225C9 Crawler Hydraulic Excavator
Troubleshooting
Shop Manual - June 2013
E-11 Blank monitor display
Trouble
Monitor display is blank after the machine is powered on.
Related information
Possible causes and standard value in normal state
Cause
Standard value in normal state/Remarks on troubleshooting
1 Failure of fuse
●
Turn engine start switch to OFF position. Then, keep it at ON position to
perform troubleshooting.
Between wire 22# and ground
Voltage
About 24V
Between wire 29# and ground
About 24V
2
Open circuit of
wire harness
●
Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Between CN-7-705 pin 8 and CN-241F pin 3
Resistance
≤
1
Ω
Between CN-7-705 pin 9 and CN-241 pin 1
≤
1
Ω
Between CN-7-705 pin 10# and ground
≤
1
Ω
3
Short circuit of
wire harness
(grounded)
●
Turn engine start switch to OFF position. Keep it at OFF position to perform
troubleshooting.
Between harness (from CN-7-705 pin 8 to CN-241
pin 3) and ground
Resistance
≥
1M
Ω
Between harness (from CN-7-705 pin 9 to CN-241
pin 1) and ground
≥
1M
Ω
4
Failure of
monitor
No troubleshooting can be done for it is internal failure. (If it is not caused by
one of the factors listed above, it should be the failure of monitor.)
60
78
CANH
CANL
CANH
CANL
CN-1-112
(D-3)
1
2
1
2
CANH
CANL
CN-7-705
(D-12)
CN-1-111
(D-6)
CN-241F
(D-12)
1
2
3
1
2
3
3
1
3
1
22
29
20
21
F1
20A
F10
5A
29
22
0
3
4
8
9
10
12
3
4
8
9
10
12
3
4
8
9
10
12
ZX215-1005102
PWR
PWR
CONTROLLER
120
ȍ
RESISTANCE
MONITOR
CAB
CHASSIS HARNESS
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