Faultfindingtrees - Philips CDR570 Service Manual

GB 18 5. CDR 3rd gen.
FE
If started up with a disc other than a
CDRW disc the display shows
if no disc is inserted display
– End of test
To exit the Burn In mode, power off the player.
5.2 Faultfinding Trees
The faultfinding trees and repair suggestions like the power
supply voltages for proper functioning of the mainboard are
indicated here.
5.2.1 CDR-Module
NO DISC LOADED
SWITCH ON POWER
NO
STBY LED?
YES
PRESS <DISPLAY>
CHECK:
•
MAINS, MAINS CABLE
•
POWER SUPPLY (SEE FAULT FINDING GUIDE PSU)
⇒
⇒
⇒
⇒
NO
•
DISPLAY (SEE FAULT FINDING GUIDE DISPLAY BOARD)
DISPLAY?
⇒
⇒
⇒
YES
⇒
⇒
⇒
⇒
CHECK:
NO
•
DISPLAY:
WIRING
"INSERT DISC"
•
POWER SUPPLY VOLTAGES
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
YES
OR "BERRn" ERROR OCCURS
PRESS
<OPEN/CLOSE>
CHECK:
•
DISPLAY BOARD (SEE FAULT FINDING GUIDE DISPLAY BOARD)
⇒
NO
⇒
TRAY?
⇒
⇒
⇒
⇒
YES
•
MECHANICAL SERVICE DIAGNOSTICS:
INSERT DISC
REPLACE CDR MODULE IF ERROR OCCURS
PRESS <OPEN/CLOSE>
NO
CD-DA DISC
CD-R DISC
LOADED?
LOADED?
YES YES
SEE CD-DA DISC SEE CD-R DISC
FAULT FINDING FAULT FINDING
Figure 5-6
Service modes, repair tips and faultfinding trees
: number of errors
detected during
finalise modes on
digits 10 and 11
: "WRONG DISC",
: "NO DISC".
WIRING
ON/OFF SWITCH
FUSES
VOLTAGES
WIRING
SUPPLY VOLTAGES
CLOCK SIGNAL 8MHz
CONTROL SIGNALS
KEYBOARD
STANDBY LED
ELECTRICAL SERVICE DIAGNOSTICS:
DISPLAY TEST, KEYBOARD TEST
WIRING
SUPPLY VOLTAGES
CLOCK SIGNAL 8MHz
CONTROL SIGNALS
KEYBOARD
ELECTRICAL SERVICE DIAGNOSTICS:
DISPLAY TEST, KEYBOARD TEST
NO
CD-RW DISC
LOADED?
YES
SEE CD-RW DISC
FAULT FINDING CL 96532076_016.eps
CD-DA DISC LOADED
NO
DISC
DETECTION &
READING?
YES
DISPLAY: NO
"CD" &
T.O.C. INFO?
YES
PRESS <PLAY>
ANALOG NO
AUDIO
OUT?
YES
YES
DISTORTION?
NO
NO
HEADPHONE?
YES
DIGITAL NO
AUDIO
OUT?
YES
PLAY BACK OF CD-DA
DISCS OK
290799
CHECK:
•
WIRING
•
POWER SUPPLY VOLTAGES
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
•
DISC: DIRT, SCRATCHES, DAMAGED...
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
•
AUDIO CONNECTIONS & CABLES
•
I/O BOARD
⇒
FLEX CONNECTION
⇒
+5V (pin 8 conn. 1000)
⇒
KILL VOLTAGE (pin 7 conn. 1000):
-8V DURING PLAY
⇒
KILL TRANSISTORS 7006,7007,7008, 7009
⇒
PLAY AUDIO SIGNALS DISC TRACK 15:
SIGNAL OF 5.4 VPP ON PINS 1 AND 3 OF CONN.
1000
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
•
AUDIO CONNECTIONS & CABLES
•
I/O BOARD
⇒
FLEX CONNECTION
⇒
+5V (pin 8 conn. 1000)
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
•
WIRING OF HEADPHONE/IR BOARD
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
CHECK:
•
AUDIO CONNECTIONS & CABLES
•
I/O BOARD
⇒
FLEX CONNECTION
⇒
+5V (pin 8 conn. 1000)
⇒
DIGITAL OUT TRANSFORMER 5450, IC7005
•
ELECTRICAL SERVICE DIAGNOSTICS:
REPLACE CDR MODULE IF "DERRn"
OR "BERRn" ERROR OCCURS
Figure 5-7
CL 96532076_017.eps
290799