Pioneer HTP-SB300 Service Manual page 29

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MAIN and SUB microcomputer
[Purpose]
Refer to this section when updating the firmware of each microcomputer is required by the service information, etc.
[Necessary Tools]
• PC with RS232C port
• RS-232C straight cable
(9pin female ↔ 25pin male)
[Connections]
Update terminals of the main microcomputer
Connect the connector of the RS-232C interface special tool to the Update terminals of the main microcomputer,
as shown below:
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Enlarged view
GGF1644
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http://www.xiaoyu163.com
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• RS-232C Interface jig : GGF1642
• SB update tool : GGF1644
• Updating program : FlashSta.exe
• Firmware file : " .mot" file
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HTP-SB300
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Remove the front panel to expose
the board behind the MAIN board.
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GGF1642
RS-232C
Straight cable
Align the pin (indicated in the figure
by a white dot) just to the right of
the Update terminals of the MAIN
microcomputer with the pin (indicated
in the figure by a white dot) of the SB
update tool (GGF1644) then push
the connector in.
The photo shows the state with the SB
update tool connected.
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