5-40
BVW-55 P2
5-11. AT Head Head-to-tape Contact Check
Tools
. Alignment tape CR8-1A: 8-960-097-45
. Oscilloscope (Tektronix 2465B or equivalent)
. Bamboo stick
5-11. AT Head Head-to-tape Contact Check
Preparation
1. Turn the power off
2. Connect the oscilloscope
CH-1 : TP303 (CH1 PB SIG)/AU-262 board
CH-2 : TP403 (CH2 PB SIG)/AU-262 board
TRIG : TP807 (Y SW)/MD-122 board
Oscilloscope setting :
CH-1 : 200 mV/DIV
CH-2 : 200 mV/DIV
TIME : 1 ms/DIV
3. Switch setting
Set the switch S100-1 (cassette compartment
lock) on the SV-206 board to ON.
4. Set the alignment tape
Set the CR8-1A and put a weight on the cassette
so that it does not rise up.
Weight about 1000 g is suitable.
. Connection of the oscilloscope
CH-1 : TP303 (CH1 PB SIG)/AU-262 board
CH-2 : TP403 (CH2 PB SIG)/AU-262 board
TRIG : TP807 (Y SW)/MD-122 board
1
2
3
4
AB
CD
E501
TP807
TP806
TP804
TP805
TP803
TP802
TP801
EF
TP303
TP302
TP402
TP403
MD-122 BOARD, B Side
1
2
3
4
5
ABCDEFGH
AU-262 BOARD, A Side
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