Panasonic RX-DS45

RX-DS45
<CD SECTION>
lM 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).
1. :
Check if the output is
minimum 0.5 Vp-p at the
test point.
2. Is focus search Broken or Check if conductance on
executed? (Check if lens shorted focus 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.)
3.
;
Check
if
conductance
on
Broken or both ends of coil with the
selatads , tester at about 30 ohms.
eeling col (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.
* Replace traverse deck.
eCheck electrical circuit.
eCD is not adjusted properly. Adjust CD again.
(1) Mechanical adjustment.
(2) Focus balance adjustment (PD balance)
(3) Focus gain adjustment.
(4) Tracking gain adjustment. Refer to pages 41~45
(5) Focus offset adjustment.
(6) Tracking offset adjustment.
(7) Tracking balance adjustment.
Check for flaws on disc or if it is warped or not centered.
~40-