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Error Nature of error Function Details
Code code
01 ROM check sum error At power on When the diagnostic program is started up, the last 2 digits of
the ROM's check sum is not 00.
02 RAM write error 10 Test data cannot be written in the RAM.
(1 byte read after write error)
03 RAM read error 10, 12 Data error at RAM data reading
04 RAM card write error 14 Test data cannot be written in the RAM card.
(1 byte read after write error)
05 RAM card read error 14,16 Data error in the RAM card reading check
06 Non connection error 14 RAM card is not installed. Or, a ROM card is installed in the
of RAM card RAM card test.
(ROM card connection)
10 Abnormal voltage of 40 Monitor terminal of drawer PCB receives BUSY signal for
drawer power. more than 1 second.
12 BUSY time out at 50, 51 Data cannot be sent due to no reception of BUSY signal.
In-line data transmission (USRT hardware error)
13 In-line receive time out 52, 53 In-line receive test is compulsorily stopped by #2 key.
14 ON-line transmission 54, 55 Data cannot be sent due to no reception for BUSY signal.
BUSY time out (Hardware error)
15 On-line receive time out 55 Cannot receive loop-back data
16 In-line/On-line receive 50~55 A parity error in received data
parrity error.
17 In-line/On-line receive 50~55 A framing error in received data
framing error
18 In-line/On-line receive 50~55 Received data is not correct.
data error
19 On-line CI signal error 54, 55 Poor connection or no connection of loop back connector.
Abnormal CI signal.
20 On-line CD signal error 55 Poor connection or no connection of loop back connector.
Abnormal CD, RTS lines (On-line 2).
21 On-line DR/CTS signal 54, 55 Poor connection or no connection of loop back connector.
error Abnormal CTS (On-line 1), DR (On-line 2).
8. Diagnostic program error code
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