Pioneer SH-D07, Service Manual

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SH-D07
Check mode
In this mode, the basic performance of the hardware that is connected with the main microprocessor (SH3) is checked up. The check
results are displayed on the screen.
1) Check mode screen and switching
There are three screens for the check mode. Press the SELECT key on the set or the R/C unit, and at each push the three screens get
switched one after the other.
2) Limitations with the check mode
In the check mode, the DTV’s basic operation cannot be performed. Check-related control only is possible.
3) Information displayed in the check mode
CHECK MODE 1 screen
CHECK MODE 1 (SH3)
R/C : OK (or NG)
ROM : XXXX
FLASH : OK (or NG)
MMC : OK (or NG)
ST20 : OK (or NG)
CHECK MODE 1 (SH3):
Tells that the set is in the check mode 1. Commands from the SH3 main microprocessor are checked.
R/C:
Shows how well communication is with the R/C unit’s microprocessor.
OK:
Indicates that the SH3 communicates well with the R/C unit’s microprocessor.
NG: Indicates that the SH3 fails to communicate with the R/C unit’s microprocessor.
ROM : XXXX :
Sum-checks the ROM. The ROM’s sum-check results are displayed via the SH3.
FLASH :
Indicates the condition of the flash.
OK : Indicates that the flash is read correctly.
NG:
Indicates that the fixed values on the flash are not correctly read.
MMC:
Checks the MMC’s boot-up.
This check goes from the MMC1 to the MMC3.
OK: Indicates that the MMC gets booted correctly.
NG: Indicates that the MMC fails to get booted.
ST20:
Checks the ST20’s boot-up.
OK: Indicates that the ST20 gets booted correctly.
NG:
Indicates that the ST20 fails to get booted.