— 33 —
SECTION 6
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation.
•
2
: nonflammable.
•
A
: B+ Line.
• Power voltage is dc 9V and fed with regulated dc power
supply from external power voltage jack (J301 on the
BASE MAIN board).
• Power voltage is dc 12V and fed with regulated dc power
supply from modular jack (MJ101 on the BASE MAIN
board) with 100
Ω
in series.
• Power voltage is dc 3.6V and fed with regulated dc power
supply from battery jack (HAND MAIN board).
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : Talk
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
N
: RX
O
: TX
P
: bell
Note on Printed Wiring Boards:
Note:
•
X
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
•
a
: Through hole.
• Indication of transistor
Waveforms
– BASE UNIT SECTION –
4 Vp-p
9.6 MHz
1
IC501
5
OSCI
– HANDSET SECTION –
4 Vp-p
9.6 MHz
1
IC401
5
OSCI
Note:
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Q
C
These are omitted
E
B
Ref. No.
Location
• BASE MAIN BOARD
Semiconductor Location
Ref. No.
Location
D102
B-9
D103
B-9
D104
C-9
D105
C-9
D111
A-8
D112
B-8
D113
B-9
D114
B-9
D115
D-8
D116
D-8
D117
C-8
D191
B-8
D192
B-8
D193
A-8
D194
A-8
D205
B-8
D502
A-3
D503
A-3
D521
C-3
D522
B-4
D523
C-4
D524
C-4
D525
C-4
D601
A-7
D604
B-3
D612
C-2
D613
D-8
D614
D-8
D615
C-2
D616
C-2
D617
C-2
IC201
D-4
IC202
D-3
IC501
C-4
IC502
C-4
IC601
A-7
IC602
B-3
Q101
D-2
Q102
B-2
Q103
D-1
Q104
B-2
Q105
C-2
Q106
C-1
Q107
C-1
Q601
B-3
Q611
C-2
Q612
D-2
Q613
D-2
Q614
C-2
Q615
D-2
Q616
C-2
Q617
C-2
Q618
D-2
Q901
E-4