Samsung VP-D101, Руководство по обслуживанию, Страница: 20 / 99

2-16
Alignment and Adjustments
Samsung Electronics
2-4-5 Tape Path Adjustment
2-4-5(a) Preparation for Adjustment
ΠClean the tape running surface (Poles, Drum, Capstan Shaft, Pinch Roller).
´ Observe the PB RF signal and Head Switching Pulse on an oscilloscope.
ˇ Play back the alignment tape.
¨ Check that the waveform of the RF signal is flat at both inlet and outlet(A in Fig. 2-23).
If not flat (B or C in Fig. 2-23), do adjustments 2-4-5(b) through 2-4-5(d).
RF Signal
(Pin 3 of CNR02)
Head Switching
(Pin 2 of CNR02)
CNR02
1
2
3
4
5
6
7
8
9 10
11
12
13
14
15
16
17
18
Fig. 2-22 Rear PCB (Bottom Side)
P1 P2
P5
P6
P7
P8
P3
Fig. 2-24
A
B
C
INLET OUTLET
NORMAL
DEFECT AT INLET
DEFECT AT OUTLET
Fig. 2-23