Note On Service; Requirements On Replacement Of; Boards Or Parts; Note On Replacement Of Parts On The Board - Sony PMW-EX3 Service Manual

1-7. Note on Service

1-7-1. Requirements on Replacement of

Boards or Parts

This section explains the necessary setups required when
replacing boards or parts.
1. 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 Section 1-5.)
Board name Ref. No.
DPR-289A IC312, IC603, IC1100, IC1603
KSW-54 IC100
SWC-48 IC601
ASW-66 IC106
RE-261 IC1001
TX-129 IC203
2. Adjusted values are stored in the following boards and
parts. The values need to be readjusted when they are
replaced.
Board/part name Ref. No.
DPR-289A *1
CMOS block IC312/DPR-289A board
LCD module *2 IC202/IF-1072 board, IC603/DPR-
289A board
*1: The adjusted values for the CMOS block and the LCD module are
stored in the DPR-289A board.
*2: The adjusted values for the LCD module are stored in the LCD module,
but the adjusted values need to be copied to the DPR-289A board.
3. The user setting values are stored in IC1703 on the
DPR-289A board. The user data must be stored
(Restore) in SxS before replacing the board and it must
be read (Recall) after replacing the board.
1-14
1-7-2. Note on Replacement of Parts on the
Board
1. The BI-202, BI-203 and BI-204 boards cannot be
replaced on the board-level service or part-level service.
If parts become defective, replace the entire CMOS
block.
2. Parts labels also cannot be replaced in the DPR-289A
board.
If parts become defective, replace the entire mounted
board.
1-7-3. 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.

1-7-4. Memory Backup Battery

For replacing the battery, refer to "Backup Battery" of the
"Appendixes" in the Operating Instructions.
When the backup battery is replaced, the date and time in
the internal clock need to be set. Refer to "Setting the
Clock" of the "Preparations" in the Operating Instructions.

1-7-5. Unleaded Solder

Boards requiring use of unleaded solder are printed with a
lead free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come
printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
m
. Be sure to use the unleaded solder for the printed circuit
board printed with the lead free mark.
. The unleaded solder melts at a temperature about 40 dC
higher than the ordinary solder, therefore, it is recom-
mended to use the soldering iron having a temperature
regulator.
. The ordinary soldering iron can be used but the iron tip
has to be applied to the solder joint for a slightly longer
time. The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful.
PMW-EX3