Maytag LD10D2 Service Manual page 17

Component Testing Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitor
before servicing, unless testing requires it.
Illustration
Timer 6 minute
2
4 3 1
Control
1
CN3
CN1
12
1
8
Touch panel
COOK OZ HEATER T/table OFF
10 PROGRAM PADS
1
TIME
ENTRY
2
HOLD
3
0 %
DEFROST
4
20 %
MEDIUM
50 % 5
MED- HI
70 % 6
QTY
7
2X
8
STOP
RESET
9
START
0
3 COOKING STAGES
©2004 Maytag Appliances Company
!
Component
Disconnect wire from terminals.
Measure resistance of the following
terminals:
Terminal 3 to terminal 4 (timer motor) .....
Terminal 1 to terminal 2(timer switch) .....
CN1
Pin 1 (black) to Pin 3 (white) .......................
RY2 (Cook Relay)
Unplug oven and remove wire leads from
RY2 terminals. Connect ohm-meter leads
to terminals.
Plug oven into power supply......................
Initiate cook cycle......................................
NOTE: RY2 should cycle when using
reduced power levels.
RY3 (Fan Relay)
Unplug oven and remove wire leads from
RY3 terminals. Connect ohm-meter leads
to terminals.
Plug oven into power supply......................
Initiate cook cycle......................................
NOTE: Fan relay remains energized for 60
seconds following cook cycle.
Continuity is indicated as 100
Each pad must be pressed to perform the
following test.
16023053 Rev. 0
WARNING
Test
Ω
and below.
1
2
3
4
5
6
7
8
9
10
11
Results
Ω
Approximately 11 K
⎯ Ω
Timer OFF infinite
⎯ Ω
Timer ON < 1
Line voltage input to control
transformer.
Ω
Infinite
Ω
< 1
Power levels for Relay 2
Power Cycles Cycles
Level On for: Off for:
20% 3 sec 9 sec
50% 6 sec 6 sec
70% 9 sec 3 sec
100% 12 sec 0 sec
Ω
Infinite
Ω
< 1
Pad Trace Measurement
1 2 & 8 Continuity
2 3 & 8 Continuity
3 4 & 8 Continuity
4 5 & 8 Continuity
5 6 & 8 Continuity
6 7 & 8 Continuity
7 1 & 9 Continuity
8 2 & 9 Continuity
9 3 & 9 Continuity
0 1 & 8 Continuity
Hold 1 & 10 Continuity
Defrost 2 & 10 Continuity
Medium 3 & 10 Continuity
MED-HI 4 & 10 Continuity
Time Entry 5 & 10 Continuity
Stop/Reset 6 & 10 Continuity
Start 7 & 10 Continuity
17