Switch Entry Circuit; Option Designation Circuit; Stepping Motor Operation Circuit - LG GR-B207WVQ.CSWQAGE Service Manual

EXPLATION FOR MICOM CIRCUIT

1-5. Switch entry circuit

The following circuits are entry circuits for sensing signal form test S/W, electronic single motor damper reed S/W for
examining refrigerator.
1-6. Option designation circuit (model separation function)
The above circuits are used for designating separation by model as option and notifying it to MICOM. Designation of option
by model and the application standards are as follows:
These circuits are accurately pre-adjusted in shipment from factory and so you must not additionally add or remove
option.
Separatio n Connection Status
Connectio
OP1
Connection
OP2

1-7. Stepping motor operation circuit

For motor driving method, rotation magnetism is formed at coils wound on each phase of motor and stator and so motor
becomes to rotate if applying "High" signal to the IC6 (TA774AP) at the MICOM PIN 41 and outputting "High", "Low" signal
by step numbers fixed through MICOM PIN 42 and 43.
OUT
OUT
Application Standard
OTHER AREA(VOLATILE)
Domestic
DISPENSER MODEL
NON-DISPENSER MODEL
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