Description Of Ccd Block Number; Memory Backup Battery; Ic Link Replacement; Circuit Protection Element - Sony CBK-HD01 Maintenance Manual

1-12-4. Description of CCD Block Number

All of the CCD units have their unique ID numbers.
This number is called the CCD block number indicating
the type of the CCD block and serial number.
The label indicating the CCD block number is attached
inside of each CCD unit.
Example) ABC xxxxx
Serial number of the CCD unit
Type of the CCD block
Applicable Model Serial No.
PDW-700 10001 and Higher

1-12-5. Memory Backup Battery

w
The lithium battery is critical part to safe operation.
Replace the component with Sony part whose part number
appears in the manual published by Sony. If the component
is replaced by any part other than the specified ones, this
may cause a fire or electric shock.
c
When replacing the lithium battery, 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 result in physical damage in the surround-
ing materials.
The FP-157 board is equipped with the data backup battery.
When replacing it, be sure to use the specified part.
Replacement part : BT1 (on the FP-157 board)
Part name : CR-2032 (lithium battery)
! 1-528-174-31
Part No. :
Recommended replacement period : Every five years
The memory IC stores the data such as date and time. If the
backup memory battery is dead or replaced, these data are
all cleared.
For re-setting the data, refer to "Setting the Date / Time of
the Internal Clock" in Section 2 of the Operating Instruc-
tions.
1-54

1-12-6. IC Link Replacement

w
The IC link are 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.
c
If a IC link is replaced while the main power is kept on,
this may cause electric shock.
Type of the CCD
Before replacing IC link, not only turn off the POWER
Block
switch but also remove the power cable that is connected
MYA
to the DC IN connector.
The RE-246 board and SW-1385 board are equipped with
IC link.
Any an excessive current flow due to abnormality inside the
equipment, the IC link blow. If a IC link 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 IC link.
Board
RE-246
SW-1385

1-12-7. Circuit Protection Element

The AT-177 and CNB-25 boards of this unit are equipped
with the positive characteristics thermistor (power
thermistor) as the circuit protection element. The positive
characteristics thermistor limits the electric current flowing
through the circuit as the internal resistance increases when
an excessive current flows or when the ambient tempera-
ture increases. If the positive characteristics thermistor
works, turn off the main power of the unit and inspect the
internal circuit of this unit. After the cause of the trouble is
removed, turn on the main power back again. The unit
works normally. It takes about one minute to cool down
the positive characteristics thermistor after the main power
is turned off.
Board
AT-177 THP600 B5 (A side)
CNB-25 THP1
Ref. No. Description
PS100 IC link 4 A
PS1 IC link 4 A
Ref. No. Address Part Number
! 1-803-353-21 0.14 A/20dC
B1 (B side) ! 1-802-063-21 1.10 A/20dC
THP2 A1 (A side) ! 1-802-063-21 1.10 A/20dC
Part No.
!1-576-677-21
!1-576-677-21
Hold Current
PDW-700/V1 (E)