Circuit Protective Devices; Fuse; Circuit Protection Element - Sony HDCE-TX30 Service Manual

1-9. Circuit Protective Devices

1-9-1. Fuse

WARNING
The fuse is critical parts to safe operation. Replace the components with Sony parts whose part number appear in the
manual published by Sony. If the components are replaced by any parts other than the specified ones, this may cause a
fire or electric shock.
CAUTION
If fuse is replaced while the main power is kept on, this may cause electric shock.
Before replacing fuse, not only turn off the POWER switch but also remove the power cable that is connected to the
Optical/electrical connector.
This unit is equipped with fuse. Any an excessive current flow due to abnormality inside the equipment, the fuse blow.
If a fuse blows, turn off the main power of the equipment once and inspect inside of the equipment and remove the cause of excessive
current. After that, replace the fuse.
Board name Ref. No.
PS-939 F101

1-9-2. 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.
PS-939 TH101
TH102
RE-345 TH103
TH3001
NET-37 TH201
TH202
TH203
TH204
Name
Fuse (10 A/250 V)
Name
POWER THERMISTOR (10D2-18LCS)
POWER THERMISTOR (10D2-18LCS)
THERMISTOR (POSITIVE) (PTFM04BC222Q***S)
THERMISTOR (POSITIVE) (PTFM04BC222Q***S)
THERMISTOR (POSITIVE)
THERMISTOR (POSITIVE)
THERMISTOR (POSITIVE)
THERMISTOR (POSITIVE)
Part No,
1-576-395-51
!
Part No.
1-811-559-31
!
1-811-559-31
!
1-811-824-11
!
1-811-824-11
!
1-805-762-11
!
1-805-762-11
!
1-805-762-11
!
1-805-762-11
!
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