4-18
TROUBLESHOOTING
“Confidential, Do Not Duplicate without written authorization from NEC.”
LMP2_Dr_NG Lamp2_OTP
Lamp1_OTP Interlock_ExIO LMP_Dr_NG
Notch_NG
LMP1_CONTn LMP2_CONTn
J52 Open Lamp2 Door open
1
X
X
X
X
X
X
X
J27 Open Lamp2 cover temp (Reserved)
X
1
0
X
0
0
X
X
J26 Open Lamp1 cover temp
X
1
1
X
0
0
X
X
J4 Open Interlock SW NG
X
X
X
1
X
X
X
X
J25 Open Lamp1 Door open
X
1
1
X
1
0
X
X
J24 Open Notch Filter Door Open
X
1
1
X
1
1
X
X
J33 between pin 1&3 Open Lamp2 Model Insert NG (Reserved)
X
X
X
X
X
X
X
1
J33 between pin 4&6 Open Lamp1 Model Insert NG (Reserved)
X
X
X
X
X
X
1
X
Note: (1) X: Don't Core (2) 1: Hi Level 0: Lo Level
J29 Tamper Switch
J30 Tamper Switch
TAMP1_1
1
f
When the Tamp. Switch is pressed, it is low status. (Normal, no
issue) Unpressed, it is Hi status. (NG, 4.5V +/- 5%)
GND
2
–
GND
SD_NO_TAMPER_O
3
g
Notice!! This pin is connected to a battery.
Don't measure this line by any equipment in board slot-in condition.
J24 for Notch Filter SW
J25 for Lamp Door 1
J52 for Lamp Door 2
J26 for Lamp Thermostat
3V3
1
f
Normal: 3V3/0V: To go back to check J25
3V3
2
g
Normal: 3.3V/0V: Lamp Thermostat is detecting the lamp (s) is (are)
temperature.
5V
1
g
Normal: 5V3/0V: Check PTC3 resistor value by Multimeter. (Normal
value < 10ohm)
Photo Diode positive, (input)
2
f
Normal: 5V/0V: The circuit loop between pin1 & pin2 is opened.
Photo Diode positive, (output)
3
g
Normal: 0V/5V: The circuit loop between pin3 & pin4 is opened.
GND
4
–
GND
TAMP2_1
1
f
When the Tamp. Switch is pressed, it is low status. (Normal, no
issue) Unpressed, it is Hi status. (NG, 4.5V +/- 5%)
GND
2
–
GND
SD_NO_TAMPER_O
3
g
Notice!! This pin is connected to a battery.
Don't measure this line by any equipment in board slot-in condition.
3.3V
1
f
Normal: 3V3/Other voltage: SLAVE uC BD 3V3 suppling is
something wrong.
–
2
–
–
3.3V
3
g
Normal: 3V3/Other voltage: (1) Notch filter is not at right position.
(2) Notch Filter Switch had broken.
3.3V
1
f
Normal: 3V3/Other voltage: Check J24.
3.3V
2
–
Normal: 3V3/0V: (1) Lamp Door 1 had been opened.
(2) Lamp Door 1 switch had broken.
3.3V
1
f
Normal: 3V3/Other voltage: Check J24.
–
2
–
–
3.3V
3
g
Normal: 3V3/0V: (1) Lamp Door 2 had been opened.
(2) Lamp Door 2 switch had broken.
J4
To Interlock BD
Содержание NP-NC900C-A
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