Refrigerator Temp - Samsung SR-61KTC Service Manual

B. REFRIGERATOR TEMP
Temp. control is changed KNOB of contructed ROTARY S/W in the refrigerator and it is possible the temp. control 1 step to 8 step.
Temp. control SETTING become partial pressure for R502 resistance and ROTARY S/W resistance.(Row composition resistance of
resistance charge to R908 and ROTARY S/W direction). And partical pressure is delivered to MICOM through R505 resistance and recognited
temp. control and it become SETTING to temp. control. Voltage or resistance charge of MAINPCB MICOM input for SUBPCB Assy's
ROTARY S/W cross spot direction is same the below.(When measure the resistance charge, connector of MAINPCB CN30is separated and
measure the connector terminal.
Section 1 STEP
(PIN #9)
Voltage 2.77
±0.15V
(R506)
Resistance 6.54㏀±
(CN30⑥~⑦) 1%
※ To upside, when measure the resistance charge isn't appeared the resistance in the case SUBPCB ASSY connection is
disconnection or crack situation of PCB board.
2 STEP 3 STEP 4 STEP
(PIN #8) (PIN #7) (PIN #6)
2.94 3.12 3.33
±0.15V ±0.15V ±0.15V
5.66㏀± 4.76㏀± 3.84㏀±
1% 1% 1%
－31－
※ CAUTION
It is appeared the S/W cross spot of ROTARY
S/Wcircuit ①~⑩.
5 STEP 6 STEP 7 STEP
(PIN #5) (PIN #4) (PIN #3)
3.57 3.84 4.16
±0.15V ±0.15V ±0.15V
2.91㏀± 1.96㏀± 0.99㏀±
1% 1% 1%
8 STEP WHEN OPEN
(PIN #2) THE CROSS SPOT
4.54
0.1~ 0.7V
±0.15V
0Ω
100㏀±1%