Notes On Service; Circuit Protection Device; Standard Tightening Torque For Screws; Cares After Using At Special Environment - Sony CA-570 Maintenance Manual

2-3. Notes on Service

2-4. Cares After Using at Special Environment

2-3. Notes on Service

2-3-1. Circuit Protection Device

The CN-1438/1552 and MB-783 boards are provided with positive thermistors for power line to protect
circuits. This device limits a current by steeply increasing the inner resistance when the device rises to a
certain temperature due to overcurrent or high ambient temperature. If the device is activates once, turn
off the power and check an equipment concerned; camera adaptor or other equipment connected to the
DC OUT, TRACKER or REMOTE connector of the camera adaptor. After the cause is eliminated and
the device cools off, turn on the power again. If there is no trouble, the unit will operate normally. It takes
about a minute for the device to cool off after powering off the unit.
Board Ref No.
CN-1438 CB1
CN-1552 CB1
MB-783 CB1
CB2

2-3-2. Standard Tightening Torque for Screws

The standard tightening torque for the screws used in CA-570/CA-570P are as follows.
Screw type
M2
M2.6
M3
M4
2-4. Cares After Using at Special Environment
It is recommended to check the following items after gathering the news at seaside, dust area or spa.
1. Clean off sand and other dust on the unit.
2. Do not allow salt in seawater or sulfur in spa to contact a not-painted surface of the cabinet. They
may cause to corrode. Clean with alcohol immediately if contacted.
3. Clean the connection surface of connectors.
4. Carry out the common operation check and confirm that the unit normally operates.
2-2 (E)
Address Equipment protected
B3 Circuits in the camera adaptor
— Equipment connected to DC OUT connector
D2 Equipment connected to TRACKER connector
D2 Equipment connected to REMOTE connector
Tightening torque
19 x 10 _2 N.m (1.9 kgf.cm)
53 x 10 _2 N.m (5.3 kgf.cm)
_2
80 x 10 N.m (8.0 kgf.cm)
140 x 10 _2 N.m (14.0 kgf.cm)
CA-570 P1