Panasonic RX-DT505 - Traversedeck

RX-DT505
m
CHECKING
THE
OPERATION
PROBLEMS
ON
THE
TRAVERSE
DECK
(OPTICAL
PICKUP)
Make sure to follow the procedures below to check the operation problems of the traverse deck (optical pickup) before replacing
it. Replace the traverse deck only after the problem is identified.
(Procedure
No.)
(Checking
Points)
(Cause)
(Testing
Procedure)
Starting the reading operation
(TOC).
ee ee [ Check if the output is
minimum 0.5 Vp-p at the
test point.
~
os iineuseoatch Broken or Check if conductance on
executed? (Check if lens enonediocte both ends of coil with the
moves up and down.) coil tester at about 30 ohms.
(The lens will slightly move
up and down during the
checking.)
The turntable rotates.
3. Check if conductance on
Broken or both ends of coil with the
honed , tester at about 30 ohms.
tracking coil (The lens will slightly move
to the right or left during the
checking.)
* Faulty PD Check if the output is
; (PHOTO minimum 0.5 Vp-p at the
RF signal output DETECTOR) test point.
Traverse deck (optical Traverse deck (optical
pickup) is normal. pickup) is faulty.
‘ eta s % Replace traverse deck.
Check electrical circuit.
®CD is not adjusted properly. Adjust CD again.
(1) Mechanical adjustment.
(2) Best eye adjustment (PD balance)
Check for flaws on disc or if it is warped or not centered.
Refer to page 51.
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