Yamaha CDX-E200 Service Manual page 12

CDX-E200
2) Troubleshooting from System Malfunctions
a) Tray fails to come out/go in.
Tray starts to YES
move but stops.
NO
Is output
YES
available at LOADING
terminal?
NO
YES
FLSW = "L"
NO
Limit switch defective
FEED servo system defective
Microcomputer defective
When tray fails to close completely
(when it stops midway)
[Corrective measure]
1) Turn ON the power and open the tray.
* If it failed to open (head and tray contacting each other),
open it after removing the chucking unit.
2) Turn OFF the power and force the tray to go in fully and
close.
3) With the power turned ON, open and close the tray to
check if the tray close completely.
b) No sound generated, Sound cut during play.
( but time display advances properly)
YES
MUTING applied.
NO
IC102 or IC4 defective
11
Poor mechanism
operation
Wire caught.
Loose gear, etc.
Motor defective
Microcomputer or
LOADING IC (IC1)
defective
MUTING circuit defective
Microcomputer defective
c) Operates as if no disc loaded. (although loaded)
Does tray
NO
Poor tray loading
load properly?
YES
Is pick-up at
NO
Feed limit switch defective
innermost position?
YES
NO
FOCUS servo
Is FOCUS
lock done? system defective
YES
NO
Does spindle Spindle servo
motor run? system defective
YES
NO
Is EFMI signal
Jitter defective
normal?
YES
IC101 or IC102 defective
Microcomputer defective
d) Sound skips.
(Time display fails to advance properly)
Is disc dirty,
YES
Check by using a
scratched or
known good disc.
warped?
NO
Poor mechanism
accuracy.
Is disc or disc
YES
Floating rubber/
stabilizer in contact with
spring deformed.
mechanism?
Pick-up connector
assembly caught.
NO
Tracking servo system defective
FEED servo system defective
FOCUS servo system defective
Pick-up defective
e) No search provided. (Sound skipped after search)
Is disc dirty,
YES
Check by using a
scratched or
known good disc.
warped?
NO
Tracking servo system defective
Is TER
YES
FEED servo system defective
waveform normal?
FOCUS servo system defective
Pick-up defective
NO
IC102 defective.