Harman Kardon FL8400 - Alignment and Adjustment

FL8400
ALIGNMENT AND ADJUSTMENT
TEST POINT LOCATION
a EQUIPMENT REQUIRED:
@ Oscilloscope over 50 MHz
@ Frequency counter
e@ Test disc PHILIPS 5A
@A regular compact disc
@SONY YEDS-7 Type 3 or ABEX TCD 781
BEFORE ADJUSTMENTS:
@ Make adjustments in numerical order.
@ Use the dualtrace oscilloscope with high impedance (greater than 10 Mohm).
@ How to enter into the test mode:
1) Open the disc tray.
2) Turn off power.
3) Turn on power while pressing "SW101 (TEST MODE)".
4) "“" or all segments appear in the display indicates the test mode
5) If you press PLAY, the test mode change to TEST MODE 1.
6) If you press PLAY, again the test mode change to TEST MODE 2.
foe 7) lf you press PLAY, again the test mode change to TEST MODE 3.
@ Initial semi-fixed VR setting.
Set the semi-fixed resistance tentatively as follows:
VR101 (PLL)
VR102 (F. Gain)
VR103 (T. Gain)
VR104 (F. Bias)
Turn fully clockwise
Center position
Turn fully counterclockwise
Center position
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Test point Locations
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