– 20 –
Pin No.
Pin name
I/O
Description
46
LTR-OUT
O
LTR signal output. At LTR oscillating :
5.3V
Output 80Hz for
three seconds.
At the other : 5.3V
47
REC-OUT
O
DICT, TEL-REC control output. At DICT, TEL-REC : “ H ” At the other : “ L ”
48
TEL-OUT
O
TEL-REC control output. At TEL-REC : “ H ” At the other : “ L ”
49
ALM-OUT
O
Alarm output. At alarm oscillating :
5.3V
2.05 kHz
50 – 53
KIN 0 – KIN 3
I
key scan input.
54
VDD
–
Positiv power source terminal of the microcomputer.
55
XT1
I
Microcomputer operation mode selection input. (Connect to VDD).
56
XT2
–
Not used (OPEN).
57
NC
–
Not used. Connect to VDD
58
X1
I
Input for clock oscillation (4.19MHz).
59
X2
O
Output for clock oscillation (4.19MHz).
–––––––––––––––
60
HU-LIS-IN
I
HU-LISTEN key input. At LISTEN key-in of the hand control unit (HU-80) : “ L ”
At the other : “ H ”
61
BS-IN
I
HU-BS key input. At BS key-in of the hand unit (HU-80) : “ L ” At the other : “ H ”
62
PB-OUT
O
Playback control output. At LISTEN : “ H ” At the other : “ L ”
–––––––––––––
63
MUTE-OUT
O
Amplifier mute output. At LISTEN, DICT, TEL-REC : “ H ” At the other : “ L ”
64
FS-IN
I
HU-FS key input. At FS key-in of the hand control unit (HU-80) : “ L ”
At the other : “ H ”
65
PR-IN
I
Foot switch LISTEN key input. At LISTEN key-in of the foot control unit (FS-75) : “ L ”
At the other : “ H ”
66
SEC-IN
–
Not used (Connect to VDD).
––––––––
67
LTR-IN
I
HU-LTR key input. At LTR key-in of the hand control unit (HU-80) : “ L ”
At the other : “ H ”
––––––––––––––
68
RESET
I
Microcomputer reset input. Normal : “ H ”
69 – 80
S0 – S11
–
Not used (OPEN).
Summary of Contents for BM-87DST Marketing
Page 3: ... 3 SECTION 2 GENERAL This section is extracted from instruction manual ...
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Page 16: ... 16 3 7 MOTOR FWD ASSY M901 3 1 2 Motor FWD ASSY M901 Mechanism deck Cushion M ...
Page 21: ... 21 22 BM 87DST 6 2 BLOCK DIAGRAM Note Signal path E PB a REC ...
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