Sony BVP-570, Maintenance Manual

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2-1 (E)
BVP-570
Section 2
Service Overview
2-1. Note on Service
2-1-1. Standard Tightening Torque for Screws
The standard tightening torque for the screws used in the unit is as follows.
Screw type Tightening torque
M2 19 x 10 _ 2 N . m (1.9 kgf . cm)
M2.6 53 x 10
_ 2
N . m (5.3 kgf . cm)
M2.6 (Precision) 40 x 10 _ 2 N . m (4 kgf . cm)
M3 80 x 10
_ 2
N . m (8 kgf . cm)
M4 140 x 10
_ 2
N . m (14 kgf . cm)
2-1-2. Description on Backup Battery
Automatic adjustments and setting values are saved in the video camera’s memory, even when the power
is turned off. This information, however, is lost when the backup battery BT1 on the AT-126 board,
which has a battery life of 1 year, becomes exhausted. If the battery voltage is low, the message
“MEM.BATT.LOW AT BOARD” blinks in the viewfinder when you power on the unit. Replace the
backup battery with a new one within a few days. If you do not replace the backup battery, the scene file
and setting values set by Operation menu in the video camera’s memory will be lost. When lost, reset the
adjustment and setting values to their factory-set values referring to Section 2-1-4.
Replacing the Backup Battery
c
When replacing, ensure that the battery is installed with “
+
” and “
_
” poles connected to the correct
terminals. An improper connection may cause an explosion or leakage of fluid.
The backup battery used in the unit is commercially available.
BT1/AT-126 board: CR2025 (commercially available)