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FILE NO. 2B0-9902
SERVICE MANUAL
CORDLESS TELEPHONE
FT-8809
PUBLISHED IN JAPAN, Aug., 1999
CONTENTS
SAFETY PRECAUTIONS ............................................................................................................ 1
OPERATING CONTROLS ........................................................................................................... 2
ALIGNMENT PROCEDURE ........................................................................................................ 3
BLOCK DIAGRAMS ..................................................................................................................... 7
SCHEMATIC DIAGRAMS ............................................................................................................ 9
TROUBLESHOOTING HINTS ................................................................................................... 13
IC AND TRANSISTOR VOLTAGE CHART ............................................................................... 20
SEMICONDUCTOR LEAD IDENTIFICATION ........................................................................... 25
ELECTRICAL PARTS LOCATION ............................................................................................. 27
WIRING DIAGRAMS ................................................................................................................. 29
EXPLODED VIEW AND MECHANICAL PARTS LIST............................................................... 31
PARTS LIST ............................................................................................................................... 35
ASSEMBLY PARTS LIST .......................................................................................................... 45
SPECIFICATIONS ..................................................................................................................... 46
SAFETY PRECAUTIONS
Before returning any models to the customer, a safety check of the entire instrument should be made.
The service technician must be sure that no protective device built into the instrument by the manufacture
has become defective or inadvertently degraded during servicing.
1.WARNING:
Alterations of the design or circuitry of these models should not be made.
Any design changes or additions such as, but not limited to, circuit modifications, auxiliary speaker
jacks, switches, grounding, active or passive circuitry, etc. may alter the safety characteristics of these
models and potentially create a hazardous situation for the user.
Any design alterations or additions will void the manufacturer's warranty and will further relieve the
manufacturer of responsibility for personal injury or property damage resulting therefrom.
2.PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special characteristics. These characteristics
often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc. Replacement parts that have these
special safety characteristics are identified in this manual and its supplements; electrical components
having such features are indentified by a in the schematic diagram and the parts list. Before
replacing any of these components, read the parts list in this manual carefully. The use of substitute
replacement parts that do not have the same safety characteristics as specified in the parts list may
create shock, fire or other hazards.
1
OPERATING CONTROLS
HANDSET CONTROLS AND FUNCTIONS
Antenna
VOL/RING Button
Liquid Crystal Display (LCD)
REDIAL Button SELECT Button
TALK Button CID (Caller ID) Button Battery compartment
Dialpad
(TONE) Button
MEM (Memory) Button
PAUSE Button
FUNC (Function) Button
DELETE , CH Button
Charging contacts
BASE UNIT CONTROLS AND FUNCTIONS LCD
TONE/PULSE Switch
DC in 9V Jack
LINE Modular Jack Dot matrix display
Caller ID indication example
Base Antenna
Number of calls
Cradle Date Time
IN USE/CHARGE LED
Caller's telephone number
PAGE Button
Caller's name
Charging Contacts
2
ALIGNMENT PROCEDURE
Base Unit
RF
Transmitter Section Power Test Point
BASE Unit AF GEN.
Connections Meter
J2 J1
DC IN TEL Line 1kHz -20dBm
RF 9V Jack Jack
Frequency Test Point
Counter
AC AC 120V
Deviation Adapter 60Hz
Mater
Preset
a) Connect the base RF unit to the base main unit.
b) Set the "TONE / PULSE" switch to PULSE.
c) Connect the AC adapter to the base unit while pressing the "PAGE" key, and keep pressing it continuously for
approximate 2 sectonds.
d) Release the "PAGE" key when entering TEST mode 1 with IN USE LED lighting.
Alignment Procedure
step Adjustment Remarks
RT301 Connect the Power Meter to the RF test point on the Base MAIN PCB.
1 (TX Power) Adjust RT301 for a -5.5dBm reading on the Power Meter.
CT1 Connect the Frequency Counter to the RF test point on the Base MAIN
2 (TX Frequency) PCB. Adjust CT1 to make sure that the frequency is 926.897468 MHz.
Press the "PAGE" key to enter the TEST Mode 2. Connect the AF Generator
3 RT3 to the TEL Line Jack on the Base Main PCB. Make sure that the output is 1
(TX Modulation) kHz -20dBm from the AF Generator.
Connect the Deviation Meter to the RF test point on the Base MAIN PCB.
Adjust RT3 to indicate ±8 kHz Dev.
Alignment Point Location on Base Main PCB and Base RF PCB
Base Main PCB
J1
TEL LINE Jack
J2
DC IN 9V Jack
Base RF PCB T
S2
RT3 RT301 T/P Switch
CT1 P
RF Test Point
3
Receiver Section
Connections
BASE Unit AC Voltmeter
RF SG Dummy Load
J1 (600-ohm)
- RF TEL Line -
Test Point Jack
+ +
J2 AF DC Voltmeter
DC IN 9V Jack Terminal
AC 120V AC
60Hz Adapter
Preset
a) Connect the base RF unit to the base main unit.
b) Set the "TONE/PULSE" switch to PULSE.
c) Connect the AC adapter to the base unit while pressing the "PAGE" key, and keep pressing it continuously for
approximate 2 seconds.
d) Release the "PAGE" key when entering TEST mode 1 with IN USE LED lighting.
Alignment Procedure
step Preset to Adjustment Remarks
Press the "PAGE" key for 3 times to enter the TEST Mode 4. Connect the
L3 RF Signal Generator to the RF test point on the Base MAIN PCB. Make
SG: 1mV
1 (Discriminator sure that the frequency is 902.952467 MHz.
No modulation
Voltage) Connect the DC Voltmeter to the Discriminator test point. Adjust L3 to
indicate DC 0.95 V.
SG: 1mV RT2
Connect the AC Voltmeter across a 600-ohm dummy to the Telephone Line
2 1 kHz ±8kHz (RX AF
Jack. Adjust RT2 for a -11dBm reading on the AC voltmeter.
deviation Voltage)
µ
SG: -6.0 dBµV Press the "PAGE" key to enter the TEST Mode 5. Make sure that the
RT1
3 1kHz ±8kHz frequency of RF SG output is 902.952467 MHz. Adjust RT1 to turn to the
(SQ Point)
Deviation point where the CHG LED just turns on.
Alignment Point Location on Base Main PCB and Base RF PCB
Base Main PCB
RT2 J1
TEL LINE Jack
J2
DC IN 9V Jack
RT1
T
S2
T/P Switch
P
L3
Discriminator Test Point RF Test Point
4
Handset Unit
Transmitter Section
Connection
RF
Test Point HANDSET Unit AF GEN.
Power
Meter
J603
Battery 1kHz 9mV
RF Connector MIC+Pin
Frequency Test Point
Counter
DC Power Supply
Deviation
Mater DC 3.8V
Preset
a) Connect the handseet RF unit to the handset main unit.
b) Connect DC power supply to battery connector on the handset unit.
c) Turn the DC power supply On while pressing " " and " # " keys, and keep pressing the keys continuously for
approximate 2 seconds.
d) Release keys when entering TEST mode 1 with beep.
Alignment Procedure
step Adjustment Remarks
RT501 Connect the RF power Meter to the RF test point on the handset MAIN PCB.
1 (TX Power) Adjust RT501 for a -5dBm reading on the Power Meter.
CT601 Connect the Frequency Counter to the RF test point on the handset MAIN
2 (TX Frequency) PCB. Adjust CT601 to make sure that the frequency is 903.052467 MHz.
Press the "2" key to enter the TEST Mode 2. Connect the AF Generator to
RT603 the MIC Connector make sure that the output is 1kHz 9mV from the AF
3
(TX Modulation) Generator.
Connect the Deviation Meter to the RF test point on the handset MAIN PCB.
Adjust RT603 to indicate ±8 kHz Dev.
Alignment Point Location on Handset Main PCB and Handset RF PCB
RF Test Point
Handset PCB
RT603
J603 RF PCB
RT501
CT601
MC601
5
Receiver Section
Connections
HANDSET Unit AC Voltmeter
RF SG Dummy Load
(150-ohm)
- RF SP -
Test Point Connector
+ +
DC Power Supply J603 AF DC Voltmeter
Battery Terminal
Connector
DC 3.8V
Preset
a) Connect the handset RF unit to the handset main unit.
b) Connect DC power supply to battery connector on the handset unit.
c) Turn the DC power supply ON while pressing " " and " # " keys, and keep pressing the keys continuously for
approximate 2 seconds.
d) Release keys when entering TEST mode 1 with beep.
Alignment Procedure
step Preset to Adjustment Remarks
Press the "4" key to enter the TEST Mode 4. Connect the RF Singal
L603 Generator to the RF test point on the handset MAIN PCB. Make sure that
SG: 1mV
1 (Discriminator the frequency is 926.997467 MHz.
No modulation
Voltage) Connect the DC Voltmeter to the Discriminator test point. Adjust L603 to
indicate DC 0.85 V.
Connect the RF Signal Generator to the RF test point on the handset MAIN
SG: 1mV RT602
PCB. Make sure that the frequency is 926.997467 MHz.
2 1 kHz ±8kHz (RX AF
Connect the AC Voltmeter across a 150-ohm dummy to the MIC Connector.
deviation Voltage)
Adjust RT602 for a 35 mV reading on the AC Voltmeter.
µ
SG: -6.0 dBµV Press the "5" key to enter the TEST Mode 5. Make sure that the frequency
RT601
3 1kHz ±8kHz of RF SG output is 926.997467 MHz. Adjust RT601 to turn to the point
(SQ Point)
Deviation where the Ringer just beeps.
Alignment Point Location on Handset Main PCB and Handset RF PCB
Discriminator Test Point RF Test Point
Handset PCB
J603 RT602 RT601
L603 RF PCB
6
BLOCK DIAGRAMS
Base Unit
7
Handset
8
SCHEMATIC DIAGRAMS
Base Unit
9 10
Handset
11 12
TROUBLESHOOTING HINTS
1. The bell does not ring.
When the PAGE SW of the NG See 2. The bell does not ring
base is pressed, does the & page does not ring.
ringer on the handset ring?
OK
When the TEL SG is joined NG Check IC4 and TEL network
with the base to make bell circuit.
signal, is there pulse wave at
pin 4 of IC4?
OK
Is there pulse wave at NG
Check R58 and R59.
pin 25 of IC5?
OK
Check IC5 and its
peripheral circuit.
Deletion of the Caller ID memory
To delete the Caller ID memory in the EEPROM, proceed with the following process:
1) Connect the battery with pressing and # buttons, and keep pressing the buttons continuously for
approximate 2 seconds.
2) Release buttons when entering TEST mode with beep.
3) Press CID button.
4) A confirmation beep will sound after about 8 seconds, then the data for caller ID is deleted.
(Note: Do not disconnect the battery until you hear the confirmation beep, otherwise the data may not be
completely deleted.)
13
2. The bell does not ring & page does not ring.
Can the base and handset be NG See 3. The base and handset
connected? cannot be connected.
OK
Press handset DIAL key NG When the key of the handset is NG
Check IC603.
while in TALK MODE. pressed, can the pulse output
Can key touch sound be at pin 58 of IC603 be seen?
heard from the ringer?
OK
OK
At the Q616 collector, can the NG Check R688, R673, R689,
pulse wave be seen? R672, R629, Q616 and Q617.
OK
Check RINGER Y601.
When the PAGE SW of the NG
Check R55, R77 and S1.
base is pressed, does pin60
of IC5 change from high to
low?
OK
Check IC4 and its peripheral
circuit.
14
3. The base and handset cannot be connected.
Check whether the base NG Check IC4 and its
is able to set in the test peripheral circuit.
mode 1.
OK
Check the TX POWER NG
Check base RF unit.
and the TX FREQUENCY
on the base unit.
OK
Press "PAGE" key twice, NG Check whether there is a NG Check RT3, R53, R70,
check whether deviation 250 Hz data waveform at R68, R69, R28, C35,
of the TX data is app. 8 C80. C80 and C40.
kHz Dev.
OK
OK
Check base RF unit.
Press "PAGE" key 7 NG Check whether there is a NG Check base RF unit and
times, 902.952467 MHz 250 Hz data waveform at the peripheral circuit of
(250 Hz ±8 kHz Dev.) pin 9 of IC3. IC3.
1mV output signal from
OK
RF jack is applied.
Can the IN USE LED be
lighted?
OK Check whether there is a NG Check RT2, Q2 and their
250 Hz data waveform at peripheral circuit.
the Q2 collector.
OK
Check whether there is a NG Check IC1 and their
250 Hz data waveform at peripheral circuit.
pin 37 of IC5.
OK
Check IC5 and its
peripheral circuit.
Check whether the NG Check IC603 and its
handset is able to set in peripheral circuit.
the test mode 1.
OK
Check the TX POWER NG
Check handset RF unit.
and the TX FREQUENCY
on the handset unit.
OK
A
15
A
Press "3" key, check NG Check whether there is a NG Check R635, R636,
whether deviation of the 250 Hz data waveform at R634, R632, R619,
TX data is app. 8 kHz C669. C610, C669 and RT603.
Dev.
OK
Check handset RF unit.
OK
Press "6" key, NG Check whether the 250 NG Check handset RF unit
926.997467 MHz (250 Hz data waveform from and the peripheral circuit
Hz ±8 kHz Dev.) 1mV pin 9 of IC606 is fed. of IC606.
output signal from RF
OK
jack is applied. Check
whether the bell ring.
OK
Check whether there is a NG Check RT602, Q601 and
Place the handset on the 250 Hz data waveform at their peripheral circuit.
base to charge about 5 the Q601 collector.
seconds, then connect OK
again.
Check whether there is a NG Check IC601 and their
250 Hz data waveform at peripheral circuit.
pin 55 of IC603.
OK
Check IC603 and its
peripheral circuit.
16
4. Cannot make a phone call (pulse).
Can the base and handset NG See 3. The base and handset
be connected? cannot be connected.
OK
While in TALK MODE, press NG
Check IC5.
dial key of the handset.
Check whether square
waveform from pin 22 of IC5
is fed.
OK
Check Q10, RL1 and their
peripheral circuits.
5. Cannot make a phone call (tone).
Can the base and handset be NG See 3. The base and handset
connected? be cannot be connected.
OK
While in TALK MODE, press NG
Check IC8.
dial key of the handset.
Can tone waveform from Pin
20 of IC8 is fed?
OK
Can tone signal be heard NG Check IC1, Q3 and their
from the handset speaker? peripheral circuits.
OK
Check the base TEL-line
circuit and RELAY control
circuit.
17
6. Voice cannot be transmitted to other party (outgoing call).
Can the base and handset be NG See 3. The base and handset
connected? cannot be connected.
OK
The 1 kHz, 9.0mV sine NG Check Q604 and its
wavefor m i s a p p l i e d t o peripheral circuit.
MC601 + side, can the 1 kHz
sine waveform from pin 24 of
IC601 be fed?
OK
Check whether there is the NG Check IC601 and its
1 kHz sine wavefor m at peripheral circuit.
pin 20 of IC601.
OK
Check whether there is the NG Check RT603 and its
1 kHz sine wavefor m at peripheral circuit.
C669.
OK
TX output signal from the NG
Check handset RF unit.
handset is detected by the
liner detector, can the 1 kHz
sine waveform be fed?
OK
Check whether there is the NG Check base RF unit and the
1 kHz sine waveform at pin 9 peripheral circuit of IC3.
of IC3 on the base unit.
OK
Check whether there is the NG Check RT2, Q2 and their
1 kHz sine waveform at pin 3 peripheral circuits.
of IC1.
OK
Check whether there is the NG Check IC1 and its
1 kHz sine wavefor m at peripheral circuit.
pin 18 of IC1.
OK
Check whether there is the NG Check Q3 and its peripheral
1 kHz sine waveform at the circuit.
Q3 collector.
OK
Check whether the 1 kHz sine NG Check T1, RL1 and their
wavefor m from TEL-line peripheral circuits.
output is fed.
OK
Check MC601 of handset.
18
7. The voice of the caller cannot be heard (incoming call).
Can the base and handset be NG See 3. The base and handset
connected? cannot be connected.
OK
The 1 kHz, 77.5mV sine Check the base TEL-line
NG
waveform is applied to TEL- circuit and REPLAY control
line of the base, can the 1 kHz circuit.
sine waveform from the Q3
collector be fed?
OK
Check whether there is the NG Check Q4 and its peripheral
1 kHz sine wavefor m at circuit.
pin 24 of IC1.
OK
Check whether there is the NG Check C1 and its peripheral
1 kHz sine wavefor m at circuit.
pin 20 of IC1.
OK
Check whether there is the NG Check RT3 and its
1 kHz sine waveform at C80. peripheral circuit.
OK
TX output signal from the NG
Check base RF unit.
base is detected by the liner
detector, can the 1 kHz sine
waveform be fed?
OK
Check whether there is the NG Check handset RF unit and
1 kHz sine waveform at pin 9 the peripheral circuit of IC606.
of IC606 on the handset unit.
OK
Check whether there is the NG Check RT602, Q601 and
1 kHz sine waveform at pin 3 their peripheral circuits.
of IC601.
OK
Check whether there is the NG Check IC601 and its
1 kHz sine waveform at the peripheral circuit.
pin 18 of IC601.
OK
Check whether there is the NG Check Q602, Q603 and its
1 kHz sine waveform at R678 peripheral circuit.
or R708.
OK
Check SP801 and WA801,
WA802.
19
IC AND TRANSISTOR VOLTAGE CHART
Base Unit Unit[V] Unit[V]
Ref. No. PIN STAND-BY TALK NOTE Ref. No. PIN STAND-BY TALK NOTE
1 2 2 1 0 0
2 2 2 2 0 0
3 1.6 1.6 3 0 0
4 0.6 0.6 4 2.5 2.5
5 1.6 1.6 5 3.2 3.2
6 1.6 1.6 6 0 0
7 1.8 1.8 7 0 0
8 3.2 3.2 8 0 0
9 0 0 GND 9 0 0
10 0-3.2 0-3.2 PULSE 10 0 0
11 0 0 GND 11 0 0
IC1 12 1.6 1.6 12 0 0
13 3.2 3.2 Vcc 13 0 0
14 1.6 1.6 14 0 0
15 1.6 1.6 15 0 0
16 0 0 RXMUTE 16 0 0
17 0 0 TXMUTE 17 0 0
18 1.6 1.6 18 3.2/0 3.2/0 TONE/PULSE
19 1.6 1.6 19 0 0
20 1.6 1.6 20 0 2.7 TXMUTE
21 0.6 0.6 21 0 2.7 RXMUTE
22 1.6 1.6 IC5 22 0 2.5 TALK
23 1.6 1.6 23 2.8 0 CASENB
24 1.6 1.6 24 0 0
1 2.6-3.8 2.6-3.8 SINE WAVE 25 0 0
2 3.4-4.2 3.4-4.2 SINE WAVE 26 0 0
3 2.6 2.4-3.0 PULSE 27 0 0
4 3.2 3.2 Vcc 28 1.8 0
5 2.8 2.5-3.0 SINE WAVE 29 1.8 0
6 2.8 2.8 30 0 0
7 2.8 2.8 31 0 0
IC3 8 3.2 3.2 32 0 0
9 0 0 33 0 0
10 0.6 0.6 34 0 0
11 0.7 35 1.2 1.2
12 0.6 0.8 36 0 0
13 3.2 0 37 0-3.2 0-3.2 PULSE
14 0 0 38 3.2 0 SQ
15 0 0 39 0 0
16 3.2 0.3p-p SINE WAVE 40 3.2 3.2
1 0 0 41 3.2 3.2
IC4 2 0 0 42 0-2.8 0-2.8 PULSE
3 0 0 43 0-2.8 0-2.8 PULSE
4 3.2 3.2 44 0-2.8 0-2.8 PULSE
20
Unit[V] Unit[V]
Ref. No. PIN STAND-BY TALK NOTE Ref. No. PIN STAND-BY TALK NOTE
45 3.2 0 1 2.5 2.5
46 2.8 2.8 2 2.5 2.5
47 2.8 2.8 3 2.5 2.5
48 0 0 4 2.5 2.5
49 0 0 5 2.5 2.5
50 0 0 6 0 0 GND
51 0 0 7 0 0 GND
52 2.8 2.8 8 0 0
53 2.8 2.8 9 0 0 GND
54 3.2 3.2 10 1.4-3.5 1.4-3.5 SINE WAVE
IC5 55 0.2-2.6 0.2-2.6 SINE WAVE 11 0-5 0-5 SINE WAVE
56 -0.2-2.2 -0.2-2.2 SINE WAVE 12 0 0 GND
57 3.1 3.1 IC9 13 0 0 GND
58 0 0 14 0 0 GND
59 0 0 15 0 0
60 3.2 3.2 16 0 0
61 0 0 17 5 5
62 0 0 18 5 5
63 0 0 19 5 5
64 0 0 20 0 0
1 3.2 3.2 21 0 0
IC6 2 0 0 22 0 0
3 0 0 23 0 0
1 3.2 3.2 24 5 5 Vcc
2 1.2 1.2 E 0 0
3 0 0 Q1 C 2.1 0.58p-p SINE WAVE
4 2.8 2.8 B 0.8 0.8
5 2.8 2.8 E 0.4 0.4
6 0 0 Q2 C 1.9 1.9
7 0 0 B 1 1
8 0 0 E 0.6 0.6
9 0.2-2.6 0.2-2.6 Q3 C 4.2 4.2
IC8 10 0-3.2 0-3.2 B 1.4 1.4
11 0 0 E 0.6 0.6
12 3.2 3.2 Q4 C 1.4 1.4
13 0 0 B 1.2 1.2
14 0 0 E 0 0
15 0 0 Q6 C 3 3
16 0 0 B 0 0
17 2.8 2.8 E 5.2 5.2
18 0 0 Q7 C 9 9
19 0 0 B 6 6
20 1.2 1.2
21
Unit[V]
Ref. No. PIN STAND-BY TALK NOTE
E 3.2 3.2
Q8 C 5.2 5.2
B 3.9 3.9
E 0 0
Q9 C 3.2 3.2
B 0 0
E 0 0
Q10 C 9 0
B 0 0.8
E 0.7 2.2
Q12 C 0 0.6
B 0.2 2.8
E 0 0
Q13 C 0 0
B 5 5
E 2.6 2.6
Q14 C 0 2.6
B 2.5 2.2
E 2.6 2.6
Q15 C 0 2.5
B 2.4 2.2
E 2.6 2.6
Q16 C 0 2.6
B 2.5 2.2
22
Handset Unit[V] Unit[V]
Ref. No. PIN STAND-BY TALK NOTE Ref. No. PIN STAND-BY TALK NOTE
1 0-2.8 1.9 16 0 0
2 0-2.8 1.9 17 1.4-3.0 3.0 W/U
3 -0.2-2.6 1.6 18 0 0 GND
4 0.4-0.8 0.6 19 3.0 3.0 RST
5 0.4-1.5 1.5 20 0 0 GND
6 0.4-1.5 1.5 21 0 0 GND
7 0-2.0 1.9 22 0.3-1.9 0.3-1.9 SINE WAVE
8 0-3.0 0 23 0-3.0 0-3.0 SINE WAVE
9 0 0 GND 24 0 0 GND
10 0-3.0 0-3.0 PULSE 25 0 0
11 0 0 GND 26 0 2.9 LCD-
IC601 12 0-1.5 1.5 27 0 2.9/0 SP-VOL2
13 0-3.0 3.0 28 0 2.9 MIC-ON
14 0-1.5 1.5 29 0 2.9 LCDRS
15 0-1.5 1.5 30 0 2.9 RESET
16 0 3.0 RXMUTE 31 0 2.9 LCDV
17 0 3.0 TXMUTE 32 0 0
18 0-1.5 1.5 33 2.9 2.9
19 0-15. 1.5 34 0 0
20 0-1.5 1.5 35 2.9 2.9
21 1.0-4.0 0.7 36 0 0
22 1.6 1.5 IC603 37 0 0
23 1.6 1.5 38 3.2 3.2 BATLOW
24 1.6 1.5 39 0 0
1 0-2.9 2.9 40 0 0
2 0 0 GND 41 0-2.9 0 SQ-IN
IC602 3 0-1.2 1.2 42 0-2.9 2.9 SC
4 0-3.0 3.0 43 0 0/2.9 RINGVOL
5 3.8 3.8 44 0-2.5 0 TXB
1 3.0 3.0 45 0 0
2 0 0 46 0-2.9 0
3 0 0 47 0-2.9 0
4 0 0 48 0-2.9 2.9
5 0 0 49 0 0 GND
6 0 0 50 0 2.9 TXMUTE
7 0 0 51 2.9 2.9 LCDSCL
IC603 8 3.0 0 CONV 52 0 0-2.9 PULSE
9 0 0 53 0 0
10 0-3.0 0/3 SP-VOL 54 0 2.9
11 3.0 3.0 VCC 55 0-2.9 0-2.9 PULSE
12 0 0 56 3.0 3.0
13 0 0 GND 57 0 0-2.9 PULSE
14 3.2 3.2 BATSAVE 58 0 0
15 3.2 3.2 59 0 0
23
Unit[V] Unit[V]
Ref. No. PIN STAND-BY TALK NOTE Ref. No. PIN STAND-BY TALK NOTE
60 0 0 E 0 0.7
61 3.0 3.0 Q602 C 0-0.2 1.5
IC603 62 3.0 3.0 B 0 1.3
63 3.0 3.0 E 0 0.6
64 3.0 3.0 Q603 C 0 1.6
1 3.2 3.2 B 0 1.3
IC604 2 3.8 3.8 E 0 0.5
3 0 0 Q604 C 0 1.6
1 3.2 3.2 B 0 1.0
IC605 2 3.2 3.2 E 0-0.3 0
3 0 0 Q609 C 0 3
1 0-3.7 2.3-3.7 SINE WAVE B 0-3.0 2.3
2 0-2.9 2.2-2.9 SINE WAVE E 0 3.2
3 0-2.5 2.2-2.8 Q610 C 3.2 0
4 3.0 3.0 B 0 0
5 0-2.5 2.3-2.8 E 0 0
6 0-2.5 2.5 Q611 C 3.2 2.9
7 0-2.5 2.5 B 0 0
IC606 8 0-3.0 2.8 E 0 0
9 0-1.5 0.5-1.0 SINE WAVE Q612 C 0-2.2 1.5-2.5 SINE WAVE
10 0-0.7 0.6 B 0-0.7 0.7
11 0-0.7 0.6 E 0-3.0 3.0
12 0-0.7 0.8 Q613 C 0.3 3.0
13 0 0 B 0-2.5 2.2
14 0 0 E 0 0
15 0 0 Q614 C 2.3 2.3
16 0-3.0 2.6-3.2 SINE WAVE B 0 0
1 0 0 E 0 0
2 0 0 Q616 C 3.8 3.8
3 0 0 B 0 0
IC608 4 0 0 E 0 0
5 0-3.0 3.0 Q617 C 0 0
6 0 0 B 0 0
7 0 0
8 0-3.0 3.0
1 0 0
IC609 2 3.8 3.8
3 3.2 3.2
E 0 0
Q600 C 0 0
B 0 0.7
E 0-0.4 1.0
Q601 C 0-2.0 1.9
B 0-1.0 0.3
24
SEMICONDUCTOR LEAD IDENTIFICATION
Base Unit
D1 /D4 / D5 / D8 / D9
/ D12 / D15 / D16 / D17 : 1N4148 D6 : LTL-16KPE
D3 : HZ33-2
D11 : HZ6B2 D2 : HZK7C
D13 : HZ4B1
Anode Cathode Anode
Cathode
Cathode Anode
Q1 : 2SC2714
Q2 / Q4 / Q6 / Q9 / Q10 : 2SC1623 Q7 / Q8 / Q11 : 2SD471
D10 : HSM88WA Q3 : 2SC2712
Anode Q12 / Q13 / Q14 / Q15 / Q16 : 2SA812(M)
B
E
C
B : Base
Cathode Cathode E : Emitter
C : Collector
E
C
IC1 B
IC5
CMP. MUTE CONT
EXP. MUTE CONT
LA8633VU UPD75116HGC IC4
RESET
TX. DATA IN
PC817
CMP. VREC
P70
P71
P72
P73
P60
P61
P62
P63
P50
P51
P52
P53
P40
CMP. OUT
LPF2 OUT
X1
X2
CMP. NF
PRE. NF
LPF2 IN
PRE. IN
VREF
1 4
VCC
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
P83 1 48 P41 2 3
P82 2 47 P42
P81 3 46 P43
24
23
22
21
20
19
18
17
16
15
14
13
P80 4 45 P30
P93 5 44 P31
P92 6 43 P32
P91 7 42 P33
P90 8 41 VDD IC6
VSS 9 40 IC RH5VL28CA
10
11
12
1
2
3
4
5
6
7
8
9
P13/INT3 10 39 P140
P12/INT2 11 38 P140
P11/INT1 12 37 P142
LPF1 IN
LPF1 OUT
EXP. IN
EXT. VREC
INT. OUT
TEL. OUT
V. HOLD
INTC. CONT
CHARGE CONT
FSK OUT
GND
ST. BY
P10/INT0 13 36 P143
PTH03 14 35 P130
3
PTH02 15 34 P131 2
1
PTH01 16 33 P132
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
PTH00
T10
T11
P23
P22/PCL
P21/PTO1
P20/PTO0
P03/SI
P02/SO
P01/SCK
P00/INT4
P123
P122
P121
P120
P133
IC3