Pioneer SH-D505, Service Manual

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SH-D505
CHECK MODE 3 screen
Keys:
Operate each of the keys on the set and see how its key name on the screen changes.
OK:
Indicates that the key on the set functions well.
Key name remaining: Indicates that the key malfunctions.
To go from this screen to the next one (CHECK MODE1), press the SELECT key three times.
DRAM:
Checks the DPRAM’s read/write performance via ST20.
OK:
Indicates that the DRAM can read and write properly.
NG: Indicates that the DRAM fails to read and write.
EEPROM:
Checks the EEPROM's read / write performance via ST20.
OK:
Indicates that the system can read and write properly.
NG: Indicates that the system fails to read and write.
Video:
Checks the video decoder’s read/write performance via ST20.
OK:
Indicates that the video decoder can read and write properly.
NG: Indicates that the video decoder fails to read and write.
Audio:
Checks the audio decoder’s read/write performance via ST20.
OK:
Indicates that the audio decoder can read and write properly.
NG: Indicates that the audio decoder fails to read and write.
CHECK MODE 2 screen
CHECK MODE 2 V . ##
DRAM : OK / NG
EEPROM : OK / NG
Video : OK / NG
Audio : OK / NG
CHECK MODE 3 V . ##
POWER DTV / 480I
UP MENU
BLUE GREEN
LEFT RIGHT
RED YELLOW
DOWN SELECT
CHECK MODE 2
Tells that the set is in the check mode 2. Commands from the ST20 TS decoder are checked.
CHECK MODE 3
Tells that the set is in the check mode 3. Press the keys on the front of the set to check the functions of the switches.