Philips CDR880 - Display Panel Measurement Procedures; Voltage Supply Measurements; Oscillator Frequency Check; Control Line Checks

CD-R DISC FAULTFINDING
CD-R DISC LOADED
NO
DISPLAY SHOWS:
“CD” “RECORDABLE”
CD-R DISC PARTIALLY
RECORDED OR EMPTY.
START RECORDING
FROM ANALOGUE
SOURCE
NO
LEVEL
ADJUSTABLE?
YES
START RECORDING
FROM DIGITAL
SOURCE
NO
DIGITAL IN?
OPTICAL IN?
YES
NO
RECORDING
SUCCESSFUL?
YES
SET OK
DISPLAY SHOWS:
“CD” “RECORDABLE”
T.O.C. INFO
YES
FINALISED CD-R DISC
LOADED.
CHECK LEVEL BOARD:
WIRING
POTMETER 3360
OP-AMP 7350
e
CHECK CONNECTOR BOARD:
FLEX CONNECTION
IC7500, R3504
RECEIVER 1520, R3507
ELECTRICAL SERVICE
DIAGNOSTICS: REPLACE CDR
MODULE IF ERROR
NO ELECTRICAL SERVICE
DIAGNOSTICS: REPLACE CDR
MODULE IF ERROR