Circuit Protection Parts; Circuit Protection Element; Replacing Fuses And Ic Links - Sony XVS-9000-C 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.
Model name Board name
XVS-9000 CN-4018
CN-4019
CN-4020
HN-442
XVS-8000/ CN-3807
XVS-7000/
XVS-6000
CN-3826
XKS-8440 VPR-129
XKS-Q8111 NET-32
XKS-Q8166 NET-32A
XKS-S8110 CNI-43
XKS-S8165 CNO-43
1-7-2.

Replacing Fuses and IC Links

WARNING
The fuse and the IC link are essential parts for safe operation. Replace it with one whose part number is
listed in the manual. If the components are replaced with any parts other than the specified ones, this may
cause a fire or electric shock.
XVS-9000-C/XVS-8000-C/XVS-7000-C/XVS-6000-C
Ref. No. Address
TH001 L-1
TH001 L-1
TH001 B-1
TH002 B-1
TH001 P-1
TH001 B-1
TH002 A-1
TH001 A-1
TH3501 K-3
TH3502 J-1
TH3503 J-1
TH4301 N-7 (Side B)
TH4302 N-7 (Side B)
TH4303 N-7 (Side B)
TH4401 A-7 (Side B)
TH4402 A-7 (Side B)
TH4403 A-7 (Side B)
TH4301 N-7 (Side B)
TH4302 N-7 (Side B)
TH4303 N-7 (Side B)
TH4401 A-7 (Side B)
TH4402 A-7 (Side B)
TH4403 A-7 (Side B)
TH001 B-1
TH002 B-1
TH001 B-1
TH002 B-1
Name
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
Part No.
1-802-063-21
1-802-063-21
1-811-201-11
1-811-201-11
1-802-063-21
1-811-201-11
1-811-201-11
1-802-063-21
1-802-108-11
1-802-108-11
1-802-108-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-804-616-11
1-811-201-11
1-811-201-11
1-811-201-11
1-811-201-11
1-12