Circuit Protection Parts; Thermistor - Sony HXCU-FB80 Service Manual

1-5.

Circuit Protection Parts

1-5-1.

Thermistor

This unit is equipped with positive-characteristic thermistors (power thermistors) as circuit protection elements.
The positive-characteristic thermistor limits the electric current flowing through the circuit as the internal resistance
increases when an excessive current flows or when the ambient temperature increases.
If the positive-characteristic thermistor works, turn off the main power of the unit and inspect the internal circuit of the
unit. After the cause of the fault is eliminated and the positive-characteristic thermistor is cooled down, turn on the main
power again. The unit works normally. It takes about one minute to cool down the positive-characteristic thermistor
after the main power is turned off.
Board Ref. No.
AT-196 TH100
TH200
DPR-386 THP1
THP2
THP20
THP100
THP102
THP103
THP105
THP106
THP107
THP108
THP109
THP110
THP111
THP114
THP115
THP118
THP121
THP122
PS-934 TH201
HXCU-FB80
Address Part No.
C-1
1-802-108-11
!
B-5
1-771-845-21
!
F-6
1-771-845-21
!
F-6
1-802-243-11
!
B-4
1-771-845-21
!
F-3
1-804-458-21
!
F-2
1-804-987-21
!
F-4
1-804-616-21
!
E-5
1-803-615-21
!
E-4
1-804-458-21
!
E-4
1-804-616-21
!
E-4
1-804-616-21
!
F-4
1-803-615-21
!
F-4
1-803-615-21
!
E-4
1-804-616-21
!
F-2
1-804-987-21
!
E-5
1-804-616-21
!
F-5
1-804-616-21
!
F-5
1-804-616-21
!
F-5
1-804-616-21
!
B-2
1-811-308-21
!
Holding current
1.5 A/20 ℃
200 mA/20 ℃
500 mA/25 ℃
1.75 A/20 ℃
500 mA/25 ℃
500 mA/20 ℃
2.5 A/20 ℃
1.1 A/20 ℃
500 mA/20 ℃
500 mA/20 ℃
1.1 A/20 ℃
1.1 A/20 ℃
500 mA/20 ℃
500 mA/20 ℃
1.1 A/20 ℃
2.5 A/20 ℃
1.1 A/20 ℃
1.1 A/20 ℃
1.1 A/20 ℃
1.1 A/20 ℃
1.1 A/20 ℃
1-8