Firmware Data Writing Method; Preparation - Sony DCM-M1 Service Manual

7-2. Firmware Data Writing Method

Write the data by the method given below, when the Main board
or the Flash Memory (IC8005) and MPEG Control (IC8501)
mounted on the MAIN board were replaced.
2-1.

Preparation

1. Measuring Equipment
To write the data, use measuring equipment listed below:
1) Personal computer (Windows95/98 installed)
2) Hyper Terminal (Communication software attached to the Win-
dows)
3) Firmware Writer Ether Flash BB(U)
Part code: J-2503-019-A
4) MPEG RATE CONTROL
Part code: J-2503-020-s
5) RS-232C Cable D-Sub 9pin (Female) (Cross cable type)
6) Regulated power supply
7) AC Adaptor/Charger (AC-VQ800)
2. Connection
1) Disconnect the CN8801 of ETHER board from the CN8007
of MAIN board, and connect the Ether Flash BB instead.
Note: Be careful of the connection direction when connecting
the Ether Flash BB.
2) Connect the CN7 of Ether Flash BB and the personal com-
puter with the RS-232C Cable (Cross cable type).
AC adaptor/charger
(AC-VQ800)
Cabinet (R)
POWER BOARD
*1 MPEG RATE CONTROL
Test pins
TP5002 TP8047
GND TEST
CN8007
MAIN BOARD
Personal computer
*1 Regulated power supply
*1 Use the regulated power supply and
MPEG RATE CONTROL when
MPEG Control (IC8501) was replaced.
CN6
2 1
CN3
Ether Flash BB
Fig.7-2-1
– 23 –
to RS-232C
(15 Vdc)
CN7
RS-232C Cable
(Cross cable Type)