Harman Kardon HD7725 - Page 9

ADJUSTMENT PROCEDURE
Top view
1. Instruments required
- DC voltmeter
re
- Oscilloscope (3 or more modes, 100MHz, input select DC range)
: vrai
- Jitter meter
- Test disc: EIAJ CD-1
2. Adjustment points
2-1 Adjusting screw layout for CD player mechanical assembly.
@
Pick-up P. C. board
er
2-2 VR and test point layout for main P.C. board.
OUTPUT
PCB-1| MAIN
OT801
J801
(C101
©]
VR101
EF Balance
Adjustment
Focus Offset
Adjustment
(eo)
VR102
Focus Offset
Adjustment
oTP101
EF Balance
Adjustment
SGND
ie
"TP102
EF Balance
Adjustment
IC103
VR602 VR604
O48
Low level
linearity
Adjustment
Reh.
Low level
linearity
Adjustment
Lch.
Oo TP202
Focus Offset
Adjustment
ADJUSTMENT POINT