31
SEMICONDUCTOR LEAD IDENTIFICATION
Base Unit
D1 /D2 /D5 /D6 /D8 /D9
/D10 /D11 /D16 /D25
/D26 /D28 /D29 /D30 : 1N4148
D3 : HZ7C3
D7 : HZ33CP
D14 : HZ4B1
D18 : HZ7A1
D31 : HZ4C3
Anode
Cathode
Q1 : 2SC2714
Q2 /Q3 /Q4 /Q7 /Q9 /Q10
/Q13 /Q17 /Q19 /Q20
/Q21 /Q22 /Q201 /Q202 : 2SC1623
Q5 /Q6 : 2SA812(M)
Q8 /Q12 /Q14 /Q18 : 2SD471
B : Base
E : Emitter
C : Collector
B
E
C
B
E
C
IC2 /IC5
PC817CD
1
2
3
4
IC1
LA8633VU
IC3
MC3361CDR2
PRE. IN
24
PRE. NF
23
CMP. NF
22
CMP. VREC
21
CMP. OUT
20
LPF2 IN
19
LPF2 OUT
18
CMP. MUTE CONT
17
EXP. MUTE CONT
16
TX. DATA IN
15
VREF
14
VCC
13
1
LPF1 IN
2
LPF1 OUT
3
EXP. IN
4
EXT. VREC
5
INT. OUT
6
TEL. OUT
7
V. HOLD
8
INTC. CONT
9
CHARGE CONT
10
FSK OUT
11
GND
12
ST. BY
Mixer Input
16
Ground
15
Audio Mute
14
Scan Control
13
Squelch Input
12
Filter Output
11
Filter Input
10
Demodulator Output
9
1
Crystal Osc
2
3
Mixer Output
4
Vcc
5
Limiter Input
6
Decoupling
7
8
Ouad Coil
D4 /D207 /D209
/D213 /D217 /D218 : RLS4148
D15 /D214 : HZK6C
Anode
Cathode
Anode
Cathode
D203 : NNCD6.2F
D201 /D208 : SML-310LT
D202 /D206 : SML-310MT
Anode
Cathode
Cathode
D2
D205 :LTD-482P
Cathode C1
Cathode E1
Cathode D1
Anode 1
Anode 2
Cathode D2
Cathode E2
Cathode C2
1
2
3
4
5
6
7
8
16 15 14 13 12 11 10 9
Cathode G1
Cathode A1
Cathode F1
Cathode B1
Cathode B2
Cathode F2
Cathode A2
Cathode G2
DIGIT 1 DIGIT 2
F2
A2
B2
E2
G2
C2
D1
F1
A1
B1
E1
G1
C1
Q11 : 2SC2120
C
E
B
IC4 :M5223FP
OUTPUT1 1
NEGATIVE1 2
POSITIVE1 3
GND 4
8 V+
7 OUTPUT2
6 NEGATIVE2
5 POSITIVE2
1
2
+
-
+
-
Summary of Contents for FT-8939
Page 2: ...CORDLESS TELEPHONE SERVICE MANUAL FILE NO 2B0 9904 FT 8939 PUBLISHED IN JAPAN Sep 1999 ...
Page 11: ...9 BLOCK DIAGRAMS Base Unit Main ...
Page 12: ...10 Base Unit DSP ...
Page 13: ...11 Handset ...
Page 14: ...12 13 SCHEMATIC DIAGRAMS Base Unit Main ...
Page 15: ...14 15 Base Unit Key ...
Page 16: ...16 17 Handset ...
Page 33: ...34 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 34: ...35 Base Unit Key PCB ...
Page 35: ...36 Handset Main PCB ...
Page 36: ...37 38 WIRING DIAGRAMS Base Unit ...
Page 37: ...39 Handset ...
Page 40: ...42 Handset 7 8 4 1 16 17 17 5 10 15 11 12 2 9 6 13 14 3 17 MAIN PCB ASSY RF MODULE HANDSET ...
Page 62: ......