GE JVM1790SK Service Manual - Page 28
GE JVM1790SK - Profile 1.7 cu. Ft. Convection Microwave Manual
 |
UPC - 084691123453
View all GE JVM1790SK manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 28 highlights
COMPONENTS TOUCH KEY BOARD TEST PROCEDURES Measure the resistance between terminal pins of connector KEY CONNECTOR. NOTE: When reconnecting the FPC connector, make sure that the holes on the FPC connector are properly engaged with hooks on the plastic fastener. MATRIX CIRCUIT FOR TOUCH KEY BOARD CONNECTOR(KEY CON) RESULTS Resistance value When When not touched touched Less than More than 400 ohms 1 mega ohm FPC CONNECTOR Top 1 11 Figure 27 Figure 28 SENSOR (For sensor model only) 1. Remove the 3 pin connector from PCB. 2. Measure resistance across pins 1 & 2. 3. Across pins 2 & 3. (ohm meter scale:Rx1) Normal: Approximately 1 & 2 3.1 Kohm 2 & 3 ∞ at 68 ± 35°F Abnormal: 1 Infinite or several. 2 3 Figure 29 7-17
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23 -
24 -
25 -
26 -
27 -
28 -
29 -
30 -
31 -
32 -
33 -
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
 |
 |
7-17
COMPONENTS
TEST PROCEDURES
RESULTS
TOUCH KEY
BOARD
SENSOR
(For sensor model only)
Measure the resistance between terminal
pins of connector KEY CONNECTOR.
NOTE:
When reconnecting the FPC connector,
make sure that the holes on the FPC
connector are properly engaged with hooks
on the plastic fastener.
MATRIX CIRCUIT FOR
TOUCH KEY BOARD
CONNECTOR(KEY CON)
1. Remove the 3 pin connector from PCB.
2. Measure resistance across pins 1 & 2.
3. Across pins 2 & 3.
(ohm meter scale:Rx1)
Normal:
Approximately
at 68 ± 35°F
Abnormal:
Infinite or several.
FPC CONNECTOR
Top
Resistance
value
When
touched
Less than
400 ohms
When not
touched
More than
1 mega ohm
1
2
3
Figure 27
Figure 29
Figure 28
11
1
1 & 2
3.1 Kohm
2 & 3
∞