Sanyo EM-C1100SD, Service Manual

Page: 7 / 28

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COMPONENT CHECKOUT PROCEDURE RESULT
TOUCH KEY
BOARD
CHECKOUT PROCEDURE FOR SWITCHES
Disconnect the lear wires from the switches and check for the continuity of the switches, connecting an ohm-meter
to its terminals.
SWITCHES
(SEE Figure 1 on page1)
CHECKOUT PROCEDURES DOOR OPEN DOOR CLOSED
INTERLOCK SWITCH
DOOR SENSING SWITCH
INTERLOCK MONITOR
SWITCH
Terminals”COM”and “NO”
Terminals”COM”and “NC”
Caution: After checking the switches, make sure that the interlock monitor switch is properly conncted according
to the CIRCUIT DIAGRAM on page 3.
When When not
touched touched
Less than More than
1 K ohms 1 meg ohms
Resitance
Value
When checking the key,
connect the ohm-meter as illustrated
below.
Measure the resistance between terminals of FPC
connector after removing it from S101. (Figure 10)
NOTE
- When reconnecting the FPC connector, make sure
the holes on the connector are properly inserted in
hook of the plastic fastener in S 101.
MATRIX CIRCUIT FOR TOUCH KEY BOARD
FPC CONNECTOR
TERMINAL OF FPC CONNECTOR
FIGURE 10