Updating Of The Firmware; Main/Sub Microcomputers Update - Pioneer VSX-821-K Service Manual

5

8.2 UPDATING OF THE FIRMWARE

[Purpose]
Refer to this section when updating the firmware of each microcomputer is required by the service information, etc.
[Necessary Tools]
• PC with a serial port
• RS-232C cable (9-pin to 9-pin, straight cable)
• RS-232C UPDATE jig: GGF1642 (Use FFC of GGF1642. (10P to 10P FFC))
• Firmware
[Connections]
Connect as shown in the figure below.
Insert the FFC with its contact surface facing the " mark.
PC
RS-232C
Straight cable
Straight Cable
(1) MAIN and SUB microcomputers update
[Procedures]
for MAIN microcomputer
1. Unplug the AC cord.
Connect the FFC cable. ( MAIN microcomputer )
Start up application FlashSta on the PC.
2. Plug the AC cord. (STANDBY mode)
For updating of the MAIN microcomputer, proceed with
the following steps in STANDBY mode.
5
6
10P
10P to 10P FFC
UPDATE jig
GGF1642
Adapter JIG's side
VSX-821-K
6
7
(SUB microcomputer)
10P
(MAIN microcomputer)
3. Press the OK button.
[ if the following messages are displayed ]
Please push the cancel button and press the JIG's
RESET button.
And confirm a connection of FFC.
Please return to procedure 1.
7
8
10P
Rear side (VSX-821-K)
Select for COM port.
63
8
A
B
C
D
E
F