Description)
MICOM Pin No. 41, 42, and 43 terminals send signals of which wave form are shown on the right in 3.33 msec
cycles. These signals pass through input terminals (No. 3, 6, and 8) of motor driving IC6 (TA7774AP) and are sent to
the output terminal (No. 10, 11, 14, 15). These output signals form rotating magnetic on the coils wound on each
phase of stator and motor rotates. When signals are input to INa and INb of motor driving IC (TA774AP), rotating
magnetic forms on the coils wound on each phase of stator and stepping motor damper rotates.
1-9. Temperature Compensation and Over Cooling/Weak Cooling Compensation Circuit
1. Freezer and refrigerator compartment temperature compensation
• Temperature Compensation Table by Resistance Adjustment (the difference compared to the present temperature)
EX) The temperature of refrigerator increases by 1 °C if refrigerator compartment compensation resistance is changed
from 10 kΩ to 18 kΩ.
MICOM CIRCUIT DESCRIPTION
- 45 -
Freezer Compartment Refrigerator Compartment
Resistance value Temperature Resistance value Temperature Remarks
(RCF1) Compensation (RCR1) Compensation
180 kΩ +5 °C 180 kΩ +2.5 °C Compensate to
56 kΩ +4 °C 56 kΩ +2.0 °C warm
33 kΩ +3 °C 33 kΩ +1.5 °C
18 kΩ +2 °C 18 kΩ +1.0 °C
12 kΩ +1 °C 12 kΩ +0.5 °C
10 kΩ 0 °C 10 kΩ 0 °C
Reference temperature
8.2 kΩ -1 °C 8.2 kΩ -0.5 °C
5.6 kΩ -2 °C 5.6 kΩ -1.0 °C
3.3 kΩ -3 °C 3.3 kΩ -1.5 °C
2 kΩ -4 °C2 kΩ -2.0 °C Compensate to
470 Ω -5 °C 470 Ω -2.5 °C cool
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