LG CED-8081B Service Manual page 24

K
Execute 'E. LD On' of 'How to use
Test Tool (Dragon)' :
'CD-RW Recording Mode'
IC601 Pin 33(CDR/RW): 'L'?
YES
IC601 Pin 34 (WR/RE) : 'H'?
YES
IC601 Pin 27(WGATE) : 'H'?
YES
IC401 Pin 60(WLDON) : 'H'?
YES
Are IC601
pin 29(EFM1), 30(EFM2),
42(RESAMP1), 2(RESAMP2),
41(ROPC1) pulse signals?
YES
Are IC401
pin 51(WFPDSH), 50(RFPDSH),
53(WBLSH), 54(SPDSH), 51(MPDSH)
pulse signals?
YES
Are IC401 pin 30(ODON),
41(W/XR) pulse signals?
YES
Dragon : Execute LD 'Off'
Normal
NO
•
Check the connection of IC301 pin 23.
•
Check and replace the IC301.
NO
•
Check the connection of IC301 pin 20.
•
Check and replace the IC301.
•
Check the connection of IC201 pin
NO
166.
•
Check and replace the IC201.
•
NO Check the connection of IC601 pin
13.
•
Check and replace the IC601.
NO
•
Check the connection lines of IC201.
•
Check and replace IC201.
NO
•
Check the connection lines of
IC601.
•
Check and replace IC601.
•
NO Check the connection of IC601 pin
21, 18.
•
Check and replace the IC601.
Dragon : Execute LD 'Off'
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