Sony HCD-D170 - Page 14

E-F Balance Check Adjustment Location :
oscilloscope
BD board [ BD BOARD ] (Conductor Side)
ee,
TP(FEO) O<«—0F
TP(VC) o«—lo-
Procedure :
1. Connect test point TP (ADJ) on Main board to GND with a
lead wire.
2. Connect oscilloscpe to test point TP (TEO). RV103
3. Turned Power switch on. ° TEO FEO
4. Put disc (YEDS-18) in and playback. @)
5. Confirm that the oscilloscope waveform is symmetrical on ane
the top and bottom in relation to 0Vdc, and check this yo RV102
level.
Traverse waveform
HANTS
LULU
symmetry
level : 300 + 100 mVp-p
6. Remove the lead wire connected in step 1.
Focus/Tracking Gain Adjustment (RV102, RV103)
[ MAIN BOARD ] (Conductor Side) —
This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjustment. .
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.