Pioneer PD-X99M Service Manual page 32

7. ADJUSTMENT
Adjustment Items
. LD (Laser Diode) output power verification
. Tracking offset and focus offset adjustments
. Focus lock and spindle lock verification
. Grating adjustment
. Tracking balance adjustment
. Tangential adjustment
. Focus gain adjustment
. Tracking gain adjustment
. VCO free-run frequency adjustment
WOONONA PRWNHH @
Measuring Equipment
. Dual trace oscilloscope
. Laser power meter (LPM-8000)
. Test disc (YEDS-7)
. AF oscillator
. Grating driver (R-882)
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$401
(POWER)
PpD-x9S9M
¢ Test Mode
All the adjustments should be performed in Test
Mode.
Test Mode setting and cancellation procedures
(1)To set the Test Mode, turn the Power switch of
the player (S401) ON shorting the TEST MODE
TERMINALs.
(2)To cancel the Test Mode, simply turn the
POWER switch of the player OFF.
The various key functions in the Test Mode are list-
ed in Table 7-1.
e Adjusting points
VR2: Tracking offset (TR.OF)
VR8: Focus gain (FO.GA)
VR4: Tracking gain (TR.GA)
VR5: Tracking Balance (TR.BL)
VR6: Focus offset (FO.OF)
VL1: VCO free-run frequency
VR5 (TR,BL)
VR6 (FO,OF)
CN104
' — CN105 F
CN102
VR2 (TR,OF)
VL1
3 (Vco coil)
CN101
VR4 (TR,GA) ©
h VR3 (FO,GA)
(Test mode terminal)
Fig. 7-1 Adjustment Points
35