Sony BVE-700A Maintenance Manual page 30

1-22 (E)
When an error is detected, the error contents appear with the NG display as shown
below.
2.Battery backup RAM(32KB) write/verify test - ?? NG ??
ERROR: ADR=bf400000,WD=01,RD=ff
ERROR: ADR=bf400001,WD=02,RD=ff
ERROR: ADR=bf400002,WD=04,RD=ff
ERROR: ADR=bf400003,WD=08,RD=ff
ERROR: ADR=bf400014,WD=10,RD=ff
ERROR: ADR=bf400015,WD=20,RD=ff
ERROR: ADR=bf400016,WD=40,RD=ff
ERROR: ADR=bf400017,WD=80,RD=ff
ERROR OCCURRED! Test break.
PUSH RETURN KEY
Faults
When this test is NG, there may be defects on IC803 on the CA-67 board.
Check the wiring for the peripherals and check whether parts are loose.
3. Real Time Clock write/verify test
This item tests the Real Time Clock in Time Keeper SRAM on the CA-67 board.
It checks that the test time is written to and read from the Real Time Clock.
When the following message appears after running the Manual test, press the Return
key to return to the selection menu.
3.Real Time Clock write/verify test ---------- !! OK !!
PUSH RETURN KEY
When an error is detected, the error contents appear with the NG display as shown
below.
3.Real Time Clock write/verify test ---------- ?? NG ??
ERROR: ADR=bf407ff9,WD=40,RD=00
ERROR: ADR=bf407ffa,WD=20,RD=00
ERROR: ADR=bf407ffb,WD=10,RD=00
ERROR: ADR=bf407ffc,WD=01,RD=00
ERROR: ADR=bf407ffd,WD=02,RD=00
ERROR: ADR=bf407ffe,WD=04,RD=00
ERROR: ADR=bf407fff,WD=08,RD=00
PUSH RETURN KEY
Faults
When this test is NG, there may be defects on IC803 on the CA-67 board.
Check the wiring for the peripherals and check whether parts are loose.
BVE-700A