Circuit Protection Parts; Circuit Protection Element - Sony PDW-HD1550 Service Manual

1-7.

Circuit Protection Parts

1-7-1.

Circuit Protection Element

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 name Ref. No.
AU-366 TH300
CN-3594 THP1
THP2
DIO-100 TH201
FP-209 TH100
TH101
HPR-55 TH12
TH101
TH250
TH251
TH260
TH271
TH290
TH291
TH292
TH293
TH294
MEM-138 THP100
SY-438 TH600
TH601
TH602
TH700
VPR-118 THP100
PDW-HD1550
Part No.
1-533-817-21
1-802-108-11
1-802-108-11
1-533-817-21
1-802-263-11
1-803-353-21
1-802-063-21
1-533-817-21
1-533-817-21
1-802-108-11
1-802-108-11
1-802-108-11
1-802-264-11
1-802-264-11
1-811-201-11
1-533-817-21
1-802-264-11
1-533-817-21
1-533-817-21
1-533-817-21
1-533-817-21
1-533-817-21
1-802-264-11
Address
Side A
Side A
Side A
Side A
D2/Side B
B2/Side A
Side B
Side B
Side A
Side A
Side A
Side A
Side A
Side A
Side A
Side A
Side A
Side B
Side A
Side A
Side A
Side A
Side A
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