Note On Service; Requirements On Replacement Of Boards Or Parts; Description Of Number Seal On The Prism; Fuse And Ic Link Replacement - Sony MCC-3000MT Service Manual

1-11.

Note on Service

1-11-1.

Requirements on Replacement of Boards or Parts

This section explains the necessary setups required when replacing boards or parts.
When any of the following boards is replaced, upgrade the firmware version.
All data are written at once when upgrading the firmware version. (Refer to
Board Name
AVP-18 board
DPR-340 board
KY-687 board
Note
The user setting values are stored in IC819 on the AVP-18 board. When the AVP-18 board is replaced, the user setting
values are lost.
1-11-2.

Description of Number Seal on the Prism

The number seal is put in the prism unit, the serial number of prism unit. Every prism unit has its own number called
prism serial number.
1-11-3.

Fuse and IC Link Replacement

WARNING
Fuses and IC links are essential parts for safe operation. Be sure to use the parts specified in this manual.
Replacing any fuse or IC link with an unspecified one may cause fire or electric shock.
CAUTION
Replacing any fuse or IC link is replaced while power is supplied to the unit may cause electric shock.
Before replacing any fuse or IC link, turn off the POWER switch and also disconnect the battery pack and
the cable from the DC IN connector.
This unit is equipped with fuses and IC links. The fuses and IC links blow if overcurrent flows in the unit due to an
abnormality, In that case, turn off the power of the unit, inspect inside of the unit, and then remove the cause of the
overcurrent. After that, replace the defective parts.
Board Name Ref.No.
APV-18 board F900
PS600
PS601
RE-309 board F001
1-11-4.

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.
MCC-3000MT
"1-8. Updating the
Ref. No.
IC114, IC708, IC1300
IC406
IC101
Address Part No.
E-2 (Side A)
1-533-627-21
A-2 (Side A)
1-576-677-21
A-3 (Side A)
1-576-677-21
B-1 (Side A)
1-576-269-21
Firmware".)
Rating
5 A/125 V
4 A/72 V
4 A/72 V
3.15 A/125 V
1-19