Toshiba FT 8006A Service Manual

FILE NO. 2B3-9801

SUPPLEMENT

SERVICE MANUAL

CORDLESS TELEPHONE

FT-8006A

— SUMMARY —

The changes specified in this SUPPLEMENT are applied for the units with a dot mark shown
just after the Serial No. (ex. 836000001). Please check the dot mark shown after the Serial
No. on the bottom of the Base unit and Handset for repair. Use this manual together with
service data FT-8006A File No. 2B0-9702.

PUBLISHED IN JAPAN, Jun., 1998

CONTENTS

ALIGNMENT PROCEDURE.................................................................................................................2

BLOCK DIAGRAMS..............................................................................................................................6

SCHEMATIC DIAGRAMS.....................................................................................................................8

TROUBLESHOOTING HINTS ...........................................................................................................12

IC AND TRANSISTOR VOLTAGE CHART .......................................................................................14

SEMICONDUCTOR LEAD IDENTIFICATION...................................................................................15

ELECTRICAL PARTS LOCATION ..................................................................................................... 16

EXPLODED VIEW AND MECHANICAL PARTS LIST ......................................................................18

PARTS LIST ........................................................................................................................................19

ASSEMBLY PARTS LIST ................................................................................................................... 24

SPECIFICATIONS ..............................................................................................................................25

— 1 —

Base Unit

Transmitter Section

Connection

ALIGNMENT PROCEDURE

Power

Meter

Frequency

Counter

Deviation

Meter

RF
Test Point

RF
Test Point

BASE RF PCB

RF
Test Point

BASE MAIN PCB

J2

DC IN

9V Jack

TEL Line

Jack

J3

1kHz 77.5mV

AF GEN.

AC

Adapter

AC 120V
60Hz

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 Adjustment Remarks

1

2

3

VR202

(TX Power)

CT201

(TX Frequency)

RT2

(TX Modulation)

Connect the Power Meter to the RF test point on the Base RF PCB. Adjust
VR202 for a −6.5 dBm reading on the Power Meter.

Connect the Frequency Counter to the RF test point on the Base RF PCB.
Adjust CT201 to make sure that the frequency is 926.893873 MHz.

Press the “PAGE” key to enter the TEST Mode 2. Connect the AF
Generator to the TEL Line Jack on the Base Main PCB. Make sure that the
output is 1 kHz 77.5 mV from the AF Generator.
Connect the Deviation Meter to the RF test point on the Base RF PCB.
Adjust RT2 to indicate ±8 kHz Dev.

Alignment Point Location on Base Main PCB and Base RF PCB

Base Main PCB

RT2

Base RF PCB

J201

CT201

VR202

— 2 —

J3
TEL LINE Jack

J2
DC IN 9V Jack

T

S2
T/P Switch

P

RF TEST POINT

Receiver Section

Connection

RF SG

AC 120V

60Hz

BASE RF PCB

−

RF

+

Test Point

AC Adapter

BASE MAIN PCB

J2

DC IN

9V Jack

TEL Line

Jack

J1
AF Terminal

Dummy Load

J3

(600-ohm)

−
+

DC Voltmeter

AC Voltmeter

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

1

SG: 1mV

No modulation

SG: 1 mV

2

1 kHz ±8kHz

deviation

SG: −6.5 dBµV

3

No modulation

L212

(Discriminator

Voltage)

RT1

(RX AF

Voltage)

VR201

(SQ Point)

RF Signal Generator to the RF test point on the Base RF PCB. Make sure
that the frequency is 902.984676 MHz.
Connect the DC Voltmeter to the J1 AF test point. Adjust L212 to indicate
DC 0.85 V.

Connect the RF Signal Generator to the RF test point on the Base RF
PCB. Make sure that the frequency is 902.984676 MHz.
Connect the AC Voltmeter across a 600-ohm dummy to the Telephone
Line Jack. Adjust RT1 for a 195 mV reading on the AC voltmeter.

Press the “PAGE” key to enter the TEST Mode 5. Make sure that the
frequency of RF SG output is 902.984676 MHz. Adjust VR201 to turn to
the point where the CHG LED just turns on.

Alignment Point Location on Base Main PCB and Base RF PCB

Base Main PCB

Base RF PCB

J202

AF TEST POINT

RT1

VR201

L212

— 3 —

J201

J3
TEL LINE Jack

J2
DC IN 9V Jack

T

S2
T/P Switch

P

RF TEST POINT

Handset Unit

Transmitter Section

Connection

Power

Meter

Frequency

Counter

Deviation

Meter

RF
Test Point

RF
Test Point

HANDSET RF PCB

RF
Test Point

HANDSET MAIN PCB

J603

Battery

Connector

MIC + Pin

1kHz 10.5mV

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 TALK LED lighting and beep.

Alignment Procedure

Step Adjustment Remarks

1

2

3

VR502

(TX Power)

CT501

(TX Frequency)

VR601

(TX Modulation)

Connect the RF power Meter to the RF test point on the handset RF PCB.
Adjust VR502 for a −7 dBm reading on the Power Meter.

Connect the Frequency Counter to the RF test point on the handset RF
PCB. Adjust CT 501 to make sure that the frequency is 903.085147 MHz.

Press the “2” key to enter the TEST Mode 2. Connect the AF Generator to
the MIC Connector make sure that the output is 1 kHz 10.5 mV from the AF
Generator.
Connect the Deviation Meter to the RF test point on the handset RF PCB.
Adjust VR601 to indicate ±8kHz Dev.

AF GEN.

DC Power Supply

Alignment Point Location on Handset Main PCB and Handset RF PCB

Handset Main PCB RF PCB

J603

Battery

Connector

MIC + Pin

MC601

VR601

CT501

— 4 —

VR502

RF TEST POINT

J501

Receiver Section

Connection

RF SG

HANDSET RF PCB

−

RF

+

Test Point

DC Power Supply

DC 3.8V

HANDSET MAIN PCB

J603

Battery

Connector

Connector

J602

−

SP

+

J1
AF Terminal

Dummy Load

(150-ohm)

DC Voltmeter

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 TALK LED lighting and beep.

Alignment Procedure

Step Preset to Adjustment Remarks

Press the “4” key to enter the TEST Mode 4. Connect the RF Signal

SG: 1 mV

1

No modulation

SG: 1 mV

2

1 kHz ±8 kHz

deviation

SG: −6.5 dBµV

3

1 kHz ±8 kHz

deviation

L512

(Discriminator

Voltage)

VR602

(RX AF

Output)

VR501

(SQ Point)

Generator to the RF test point on the handset RF PCB. Make sure that
the frequency is 926.994344 MHz.
Connect the DC Voltmeter to the J601 AF test point. Adjust L512 to
indicate DC 0.85 V.

Connect the RF Signal Generator to the RF test point on the handset RF
PCB. Make sure that the frequency is 926.994344 MHz.
Connect the AC Voltmeter across a 150-ohm dummy to the MIC
Connector. Adjust VR602 for a 155 mV reading on the AC Voltmeter.

Press the “5” key to enter the TEST Mode 5. Make sure that the
frequency of RF SG output is 926.994344 MHz. Adjust VR501 to turn to
the point where the indication is just vibrated.

AC Voltmeter

Alignment Point Location on Handset Main PCB and Handset RF PCB

Handset Main PCB RF PCB

AF TEST POINT

J603

Battery

Connector

VR602

VR501

— 5 —

J502

L512

J602

Connector

SP

RF TEST POINT

J501

— 6 —

— 7 —

SCHEMATIC DIAGRAMS

Base, RF

— 8 — — 9 —

— 11 —

Handset, RF

— 10 —

TROUBLESHOOTING HINTS

The base and handset cannot be connected.

Check whether the base is
able to set in the test
mode 1.

OK

Check the TX POWER and
the TX FREQUENCY on
the base unit.

OK

Set the base in the test
mode 3, check whether
deviation of the TX data is
app. 7 kHz Dev.

OK

Set the base in the test
mode 8, 902.984676 MHz
(250 Hz ±7 kHz Dev.) 1 mV
output signal from RF jack
is applied.
Can the INUSE LED be
lighted?

OK

NG

NG

NG

NG

Check IC4 and its
peripheral circuit.

Check base RF unit.

Check whether there is a
250 Hz data waveform at
pin 9 of J1.

OK

Check base RF unit.

Check whether there is a
250 Hz data waveform at
pin 1 of J1.

OK

Check whether there is a
250 Hz data waveform at
the Q1 collector.

NG

NG

NG

Check RT2, R25, R26, R27
R28, R30 and C14.

Check base RF unit.

Check RT1, Q1 and their
peripheral circuits.

Check whether the
handset is able to set in the
test mode 1.

OK

Check the TX POWER and
the TX FREQUENCY on
the handset unit.

OK

NG

NG

OK

Check whether there is a
250 Hz data waveform at
pin 38 of IC4.

OK

Check IC4 and its
peripheral circuit.

Check IC603 and its
peripheral circuit.

Check handset RF unit.

NG

Check Q3, Q4 and their
peripheral circuits.

— 12 —

Set the handset in the test
mode 3, check whether
deviation of the TX data is
app. 7 kHz Dev.

OK

NG

Check whether there is a
250Hz data waveform at
pin 9 of J601.

OK

Check handset RF unit.

NG

Check VR601, R619, R632,
R634, R635, R636
and C611.

Set the handset in the test
mode 6, 926.994344 MHz
(250 Hz ±7 kHz Dev.) 1mV
output signal from RF jack
is applied. Check whether
the bell ring.

OK

Place the handset on the
base to charge about
5 seconds, then connect
again.

NG

Check whether the 250 Hz
data wareform from pin 1
of J601 is fed.

OK

Check whether there is a
250 Hz data waveform at
the Q601 collector.

OK

Check whether there is a
250 Hz data waveform at
pin 40 of IC603.

OK

Check IC603 and its
peripheral circuit.

NG

NG

NG

Check handset RF unit.

Check VR602, Q601 and
their peripheral circuits.

Check Q602, Q604 and
their peripheral circuits.

— 13 —

IC AND TRANSISTOR VOLTAGE CHART

IC’s Unit [V]

Ref.

Pin STBY TALK Note

No.

10 0
2 0 1.64
3 0.58 2.74
4 0 2.62
5 0 1.93
60 0
7 3.01 1.75
8 3.15 3.10

9 3.14 3.10
10 2.70 2.66
11 1.80 1.76

IC202

IC203 Not Used
IC204 Not Used

12 0 0
13 3.13 3.12
14 0 0
15 0 0
16 2.75 2.80
17 2.65 2.80
18 1.35 1.36
19 0 0
20 1.40 1.40
21 2.13 2.13
22 3.03 3.05
23 1.56 1.55
24 1.56 1.55

Ref.

Pin STBY TALK Note

No.

10 0
2 0 1.69
3 0 2.76
4 0 2.64
5 0 1.94
60 0
7 0 0.98
8 3.09/0 3.09

9 3.07/0 3.07
10 2.66/0 2.66
11 1.72/0 1.72

IC502

IC503 Not Used
IC504 Not Used

12 0 0
13 3.12/0 3.12
14 0 0
15 0 0
16 3.22/0 3.22
17 3.23/0 3.23
18 0.71/0 0.71
19 0 0
20 1.42/0 1.42
21 2.16/0 2.16
22 3.08/0 3.08
23 1.54/0 1.54
24 1.54/0 1.54

Unit [V]

Transistors Unit [V]

Ref.

Pin STBY TALK Note

No.

E 0 3.05

Q202 C 0 3.05

B 3.05 2.35

Q203 Not Used
Q204 Not Used

E0 0

Q206 C 0 2.03

B 0 0.77
E0 0

Q207 C 0 0.88

B 0 0.71

Q209 Not Used

E 3.13 2.11

Q212 C 3.07 3.05

B 2.88 2.87

Ref.

Pin STBY TALK Note

No.

E 0 3.05

Q502 C 0 3.05

B 3.05/0 2.35 INTERMITTENT(STBY)

Q503 Not Used
Q504 Not Used

E0 0

Q506 C 0 2.06

B 0 0.77

E0 0

Q507 C 0 0.89

B 0 0.73

Q509 Not Used

E 2.15/0 2.15 INTERMITTENT(STBY)

Q512 C 3.06/0 2.9 INTERMITTENT(STBY)

B 2.90/0 2.9 INTERMITTENT(STBY)

— 14 —

Unit [V]

Base Unit

T

T

SEMICONDUCTOR LEAD IDENTIFICATION

D202/D203: 1SV270

Cathode

Anode

Q202: 2SA-1162
Q206/Q207/Q212: 2SC5065

C

B: Base
E: Emitter
C: Collector

BE

IC202
M64084AGP

NC

124

Tx OUT

Tx Vcc

Tx GND

223
322
421

TxB

520

TxE

619

PD1

718
817

Vcc

916

Xin

Xout

10 15
11 14

XBo

GND

12 13

MIX REF
MIX IN
Rx Vcc
RxB
RxE
Rx GND
PD2
RST
SI
CPS
Lock
MIX OU

Handset Unit

D502/D503: 1SV270

Cathode

Anode

Q502: 2SA-1162
Q506/Q507/Q512: 2SC5065

C

B: Base
E: Emitter
C: Collector

BE

IC502
M64084AGP

NC

124

Tx OUT

Tx Vcc

Tx GND

223
322
421

TxB

520

TxE

619

PD1

718

Vcc

817
916

Xin

Xout

10 15
11 14

XBo

GND

12 13

MIX REF
MIX IN
Rx Vcc
RxB
RxE
Rx GND
PD2
RST
SI
CPS
Lock
MIX OU

— 15 —

Base, RF

ELECTRICAL PARTS LOCATIONS

— 16 —

Handset, RF

— 17 —

EXPLODED VIEW AND MECHANICAL PARTS LIST

PART NO.

PART NO.

Base Unit

LOC.
NO.

14 RC008768 GSDC258035Z Shield Case ABS 1
15 RC008769 GSDC258036Z Shield Case ABS 1
18 RC008788 PLBS458425Z Label, ID Polyester 1

RC008772 PLBS458085Z Label, ID for BK/GR Polyester
20 RC008770 HSDC458037Z Shield Case SPTE 1
21 RC008771 HSDC458038Z Shield Case SPTE 1

REF. NO. DESCRIPTION Q'ty

Handset Unit

LOC.
NO.

63 RC008789 PLBS458426Z Label, ID Polyester 1

RC008777 PLBS458084Z Label, ID for BK/GR Polyester
67 RC008768 GSDC258035Z Shield Case ABS 1
68 RC008769 GSDC258036Z Shield Case ABS 1
73 RC008770 HSDC458037Z Shield Case SPTE 1
74 RC008771 HSDC458038Z Shield Case SPTE 1

REF. NO. DESCRIPTION Q'ty

— 18 —

PARTS LIST

LOC.
NO.

CAPACITORS

The following codes indicate variation of capacitors against temperatures,:

YA =
CH = 0
SL = +350 ppm/

C201 RC005223 BCMS812091Z CERAMIC 2PF 50V C CK
C202 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C203 RC005223 BCMS812091Z CERAMIC 2PF 50V C CK
C204 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH
C206 RC005222 BCMS811091Z CERAMIC 1PF 50V C CK
C209 RC008785 BCMM814098Z CERAMIC 4PF 50V B CH
C210* RC005215 BCMM812704Z CERAMIC 27PF 50V J CH
C213 RC005208 BC814725Z CERAMIC 0.0047UF 50V K B
C220* RC005205 BC811035Z CERAMIC 0.01UF 50V K B
C221* RC005216 BCMM813304Z CERAMIC 33PF 50V J CH
C222 RC005204 BC811025Z CERAMIC 0.001UF 50V K B
C223 RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C224* RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C225* RC004185 BCSS951006Z TANTALUM CHIP TAPE 10UF 7V M A C-241
C234 RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C235 RC008754 BCMM813098Z CERAMIC 3PF 50V B CH
C236 RC005207 BC813325Z CERAMIC 0.0033UF 50V K B
C237 RC005208 BC814725Z CERAMIC 0.0047UF 50V K B
C238* RC005206 BC812225Z CERAMIC 0.0022UF 50V K B
C239* RC004446 BCPP662286Z TANTALUM CHIP TAPE 0.22UF 35V M A C-227
C240 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH
C241 RC008753 BCMM812098Z CERAMIC 2PF 50V B CH
C242 RC005223 BCMS812091Z CERAMIC 2PF 50V C CK
C243 RC008757 BCMM818204Z CERAMIC 82PF 50V J CH
C244 RC005205 BC811035Z CERAMIC 0.01UF 50V K B
C245 RC005212 BCMM811504Z CERAMIC 15PF 50V J CH
C246 RC005212 BCMM811504Z CERAMIC 15PF 50V J CH
C247 RC005221 BCMM818092Z CERAMIC 8PF 50V D CH
C248 RC005205 BC811035Z CERAMIC 0.01UF 50V K B
C249 RC005211 BCMM811204Z CERAMIC 12PF 50V J CH
C250 RC005209 BCMM811002Z CERAMIC 10PF 50V D CH
C251 RC005204 BC811025Z CERAMIC 0.001UF 50V K B
C252 RC005202 BC311045Z CERAMIC 0.1UF 16V K B
C253 RC005205 BC811035Z CERAMIC 0.01UF 50V K B
C257 RC008758 BCSS116896Z TANTALUM CHIP TAPE 6.8UF 10V M A C-241
C258* RC005205 BC811035Z CERAMIC 0.01UF 50V K B
C260 RC004185 BCSS951006Z TANTALUM CHIP TAPE 10UF 7V M A C-241
C261 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C262 RC008753 BCMM812098Z CERAMIC 2PF 50V B CH
C263 RC005360 BCMM816092Z CERAMIC 6PF 50V D CH
C267* RC008752 BC512735Z CERAMIC 0.027UF 25V K B

PART NO.

±5%, YB = ±10%, YD = +20 −30%, YE = +20 −50% (−25 ~ +85 °C), ZF = +30 −80%, (−10 ~ +79 °C),

±60 ppm/°C, TH = −470 ppm/°C, ±60ppm/°C, B = ±10%, F = +30 −80%,

°C ~ −1000 ppm/°C, UJ = −750 ppm/°C ±120 ppm/°C, CJ = 0 ± 120ppm/°C, CK = 0 ± 250ppm/°C

REF
NO.

DESCRIPTION

— 19 —

LOC.
NO.

PART NO.

REF
NO.

DESCRIPTION

C268 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C270 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C274 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C275 RC005360 BCMM816092Z CERAMIC 6PF 50V D CH
C275 Deleted
C276 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C284 Deleted
C285 Deleted
C289 Deleted
C291 Deleted
C294 Deleted
C297 RC005220 BCMM816804Z CERAMIC 68PF 50V J CH
C298 Deleted
C501 RC005224 BCMT813091Z CERAMIC 3PF 50V C CJ
C509 RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C510* RC005216 BCMM813304Z CERAMIC 33PF 50V J CH
C513 RC005205 BCML811035Z CERAMIC 0.01UF 50V K B
C520* RC005205 BCML811035Z CERAMIC 0.01UF 50V K B
C521* RC005216 BCMM813304Z CERAMIC 33PF 50V J CH
C522 RC005204 BCML811025Z CERAMIC 0.001UF 50V K B
C523 RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C524* RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C525* RC004185 BCSS951006Z TANTALUM CHIP TAPE 10UF 7V M A C-241
C534 RC008785 BCMM814098Z CERAMIC 4PF 50V B CH
C535 RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C536 RC005207 BCML813325Z CERAMIC 0.0033UF 50V K B
C537 RC005208 BCML814725Z CERAMIC 0.0047UF 50V K B
C538 RC005206 BCML812225Z CERAMIC 0.0022UF 50V K B
C539* RC004446 BCPP662286Z TANTALUM CHIP TAPE 0.22UF 35V M A C-227
C540 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH
C541 RC008755 BCMM815098Z CERAMIC 5PF 50V B CH
C542 RC005223 BCMS812091Z CERAMIC 2PF 50V C CK
C543 RC008757 BCMM818204Z CERAMIC 82PF 50V J CH
C544 RC005205 BCML811035Z CERAMIC 0.01UF 50V K B
C545 RC005212 BCMM811504Z CERAMIC 15PF 50V J CH
C546 RC005212 BCMM811504Z CERAMIC 15PF 50V J CH
C547 RC008756 BCMM816091Z CERAMIC 6PF 50V C CH
C548 RC005205 BCML811035Z CERAMIC 0.01UF 50V K B
C549 RC008755 BCMM815098Z CERAMIC 5PF 50V J CH
C550 RC005212 BCMM811504Z CERAMIC 15PF 50V J CH
C551 RC005204 BCML811025Z CERAMIC 0.001UF 50V K B
C552 RC005202 BCML311045Z CERAMIC 0.1UF 16V K B
C553 RC005205 BCML811035Z CERAMIC 0.01UF 50V K B
C557 RC008758 BCSS116896Z TANTALUM CHIP TAPE 6.8UF 10V M A C-241
C558* RC005205 BCML811035Z CERAMIC 0.01UF 50V K B
C560 RC004185 BCSS951006Z TANTALUM CHIP TAPE 10UF 7V M A C-241
C561 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C562 RC005290 BCMS815081Z CERAMIC 0.5PF 50V C CH

— 20 —

LOC.
NO.

PART NO.

REF
NO.

DESCRIPTION

C563 RC005360 BCMM816092Z CERAMIC 6PF 50V D CH
C567* RC008752 BCML512735Z CERAMIC 0.027UF 25V K B
C568 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C570 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C574 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C575 RC005360 BCMM816092Z CERAMIC 6PF 50V D CH
C576 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH
C584 Deleted
C585 RC004410 BCBH814091Z CERAMIC 4PF 50V C CH
C589 Deleted
C591 Deleted
C594 Deleted
C597 RC005220 BCMM816804Z CERAMIC 68PF 50V J CH
C598 Deleted
C604 RC001596 BCXF311050Z CERAMIC 1UF 16V Z F
C611 RC001596 BCXF311050Z CERAMIC 1UF 16V Z F
C618 RC001596 BCXF311050Z CERAMIC 1UF 16V Z F
C631 RC001596 BCXF311050Z CERAMIC 1UF 16V Z F

DIODES

D202* RC008759 BDAY0908001 DIODE 1SV270 (TPH3)
D203* RC008759 BDAY0908001 DIODE 1SV270 (TPH3)
D502* RC008759 BDAY0908001 DIODE 1SV270 (TPH3)
D503* RC008759 BDAY0908001 DIODE 1SV270 (TPH3)

FILTERS

FT201 RC008762 BFLY0932001 FILTER, SAW FL-932 TQS-833C-7R
FT501 RC008762 BFLY0932001 FILTER, SAW FL-932 TQS-833C-7R

IC’s

IC004 RC008750 BDDY0718001 UC2177 MB89173PF-G-200-BND
IC202 RC008761 BDEY3571003 M64084AGP
IC203 Deleted
IC204 Deleted
IC502 RC008761 BDEY3571003 M64084AGP
IC503 Deleted
IC504 Deleted
IC603 RC008773 BDDY0717001 UC2176 MB89174APF-G-203-BND

COILS

L202 RC005236 BLZY0127686 INDUCTOR LZ-127 0.0068UH TAPE
L206* RC008786 BLZY0127127 INDUCTOR LZ-127 0.012UH J TAPE
L209* RC005236 BLZY0127686 INDUCTOR LZ-127 0.0068UH TAPE
L506* RC008786 BLZY0127127 INDUCTOR LZ-127 0.012UH TAPE
L509* RC005235 BLZY0127566 INDUCTOR LZ-127 0.0056UH J TAPE

— 21 —

LOC.

DB-036 2SA1162-G(GR)TE85L

DB-036 2SA1162-G(GR)TE85L

NO.

PART NO.

REF
NO.

DESCRIPTION

TRANSISTORS

Q202* RC001081 BDBA1162107
Q204 Deleted
Q206 RC008760 BDBC5065124 2SC5065-Y(TE85R)
Q207 RC008760 BDBC5065124 2SC5065-Y(TE85R)
Q209 Deleted
Q212 RC008760 BDBC5065124 2SC5065-Y(TE85R)
Q502 RC001081 BDBA1162107
Q504 Deleted
Q506 RC008760 BDBC5065124 2SC5065-Y(TE85R)
Q507 RC008760 BDBC5065124 2SC5065-Y(TE85R)
Q509 Deleted
Q512 RC008760 BDBC5065124 2SC5065-Y(TE85R)

RESISTORS

R051 RC008751 BRSJ103304Z METAL OXIDE 33 1W J
R065 RC008793 BRSJ222704Z METAL OXIDE BULK 27 1/2WS J
R201 Deleted
R203* RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING
R205* RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R206 RC005252 BRFC163314Z CARBON FIXED CHIP 330 1/16W J TAPING
R207* RC005253 BRFC163324Z CARBON FIXED CHIP 3.3K 1/16W J TAPING
R209* RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R216 RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING
R217* RC005434 BRFC163914Z CARBON FIXED CHIP 390 1/16W J TAPING
R219* RC005311 BRFC160004Z CARBON FIXED CHIP 0 1/16W J TAPING
R220* RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1/16W J TAPING
R221* RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R225 Deleted
R226 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R227* RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING
R228* RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING
R229 RC005434 BRFC163914Z CARBON FIXED CHIP 390 1/16W J TAPING
R230 RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING
R232* RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING
R233 RC008766 BRFC161224Z CARBON FIXED CHIP 1.2K 1/16W J TAPING
R234 Deleted
R235 Deleted
R236 Deleted
R237 Deleted
R238 Deleted
R239 RC008767 BRFC163344Z CARBON FIXED CHIP 330K 1/16W J TAPING
R240 RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING
R241 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING
R242* RC005279 BRFC161514Z CARBON FIXED CHIP 150 1/16W J TAPING
R243 Deleted
R244 RC005251 BRFC163304Z CARBON FIXED CHIP 33 1/16W J TAPING

— 22 —

LOC.
NO.

PART NO.

REF
NO.

DESCRIPTION

R247 Deleted
R248 Deleted
R252 RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING
R253 RC005673 BRFC163934Z CARBON FIXED CHIP 39K 1/16W J TAPING
R254 RC005245 BRFC161834Z CARBON FIXED CHIP 18K 1/16W J TAPING
R256 Deleted
R257 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R259* RC005255 BRFC164714Z CARBON FIXED CHIP 470 1/16W J TAPING
R261* RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING
R262* RC008732 BRFC161214Z CARBON FIXED CHIP 120 1/16W J TAPING
R263* RC005255 BRFC164714Z CARBON FIXED CHIP 470 1/16W J TAPING
R501 Deleted
R503* RC008776 BRFC166894Z CARBON FIXED CHIP 6.8 1/16W J TAPING
R505* RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R506 RC005252 BRFC163314Z CARBON FIXED CHIP 330 1/16W J TAPING
R507* RC005253 BRFC163324Z CARBON FIXED CHIP 3.3K 1/16W J TAPING
R509* RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R516 RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING
R517 RC005434 BRFC163914Z CARBON FIXED CHIP 390 1/16W J TAPING
R519* RC005311 BRFC160004Z CARBON FIXED CHIP 0 1/16W J TAPING
R520* RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1/16W J TAPING
R521* RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R525 Deleted
R526 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R527* RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING
R528* RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING
R529 RC005434 BRFC163914Z CARBON FIXED CHIP 390 1/16W J TAPING
R530 RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING
R532* RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING
R533* RC008766 BRFC161224Z CARBON FIXED CHIP 1.2K 1/16W J TAPING
R533 Deleted
R534 Deleted
R535 Deleted
R536 Deleted
R537 Deleted
R538 Deleted
R539 RC008767 BRFC163344Z CARBON FIXED CHIP 330K 1/16W J TAPING
R540 RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING
R541 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING
R542* RC005279 BRFC161514Z CARBON FIXED CHIP 150 1/16W J TAPING
R543 Deleted
R544 RC005251 BRFC163304Z CARBON FIXED CHIP 33 1/16W J TAPING
R547 Deleted
R548 Deleted
R552 RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING
R553 RC005673 BRFC163934Z CARBON FIXED CHIP 39K 1/16W J TAPING
R554 RC005245 BRFC161834Z CARBON FIXED CHIP 18K 1/16W J TAPING
R556 Deleted

— 23 —

LOC.
NO.

R557 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING
R558 RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING
R559* RC005255 BRFC164714Z CARBON FIXED CHIP 470 1/16W J TAPING
R561* RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING
R562* RC005279 BRFC161514Z CARBON FIXED CHIP 150 1/16W J TAPING
R563* RC005255 BRFC164714Z CARBON FIXED CHIP 470 1/16W J TAPING
R623 RC005432 BRFC161544Z CARBON FIXED CHIP 150K 1/16W J TAPING

RC008779 PLBB458243Z LABEL, BARCODE PAPER
RC008780 PLBB458245Z LABEL, BARCODE PAPER

Note: The part with * mark is newly added.

PART NO.

REF
NO.

DESCRIPTION

ASSEMBLY PARTS LIST

NOTE: Following part numbers are not available as replacement parts.

Order parts necessary for repair or contact the Toshiba Factory Service Center.

LOC.
NO.

PART NO.

RC008745 AD846BLBA BASE MAIN ASSEMBLY

RC008746 AD846BLBB BASE RF ASSEMBLY

RC008747 AD846BLPA HANDSET MAIN ASSEMBLY

RC008748 AD846BLPB HANDSET RF ASSEMBLY

REF
NO.

DESCRIPTION

— 24 —

SPECIFICATIONS

Measurement Conditions

Standard Voltage:
Handset Unit DC 3.8 V ±0.025 V
Base Unit AC 120 V ±3 V 60 Hz
Temperature: 25 °C ±5 °C
Channel: CH Portable (TX Frequency) Base (TX Frequency)

1 902.080435MHz 925.989636MHz
2 902.130671MHz 926.039871MHz
3 902.180906MHz 926.090107MHz
4 902.231142MHz 926.140342MHz
5 902.281377MHz 926.190577MHz
6 902.331613MHz 926.240813MHz
7 902.381849MHz 926.291048MHz
8 902.432084MHz 926.341284MHz

9 902.482320MHz 926.391519MHz
10 902.532555MHz 926.441755MHz
11 902.582791MHz 926.491990MHz
12 902.633026MHz 926.542225MHz
13 902.683262MHz 926.592461MHz
14 902.733498MHz 926.642696MHz
15 902.783733MHz 926.692932MHz
16 902.833969MHz 926.743167MHz
17 902.884204MHz 926.793403MHz
18 902.934440MHz 926.843638MHz
19 902.984676MHz 926.893873MHz
20 903.034911MHz 926.944109MHz
21 903.085147MHz 926.994344MHz
22 903.135382MHz 927.044580MHz
23 903.185618MHz 927.094815MHz
24 903.235853MHz 927.145051MHz
25 903.286089MHz 927.195286MHz
26 903.336325MHz 927.245521MHz
27 903.386560MHz 927.295757MHz
28 903.436796MHz 927.345992MHz
29 903.487031MHz 927.396228MHz
30 903.537267MHz 927.446463MHz
31 903.587503MHz 927.496699MHz
32 903.637738MHz 927.546934MHz
33 903.687974MHz 927.597169MHz
34 903.738209MHz 927.647405MHz
35 903.788445MHz 927.697640MHz
36 903.838681MHz 927.747876MHz
37 903.888916MHz 927.798111MHz
38 903.939152MHz 927.848347MHz
39 903.989387MHz 927.898582MHz
40 904.039623MHz 927.948817MHz

Telephone line Voltage/Load: DC 48 V ±2 V/600 ohm
Ring Frequency: 20 Hz
Ring Duration: 2 Sec ON, 4 Sec OFF
Standard Modulation: 1 kHz ±8 kHz Dev.
Secure Code: 65536 Combination
Method of Measurement: According to EIA Standard,RS-316A
Portable RX Load: 150 ohm

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Base Unit

Receiver Unit Nominal Limit

Sensitivity 12dB SINAD (CCITT Filter ON) dBm −115 < −107
Frequency Response 0.3 kHz dB −1.5 −5.5 ~ +2.5

3.0 kHz dB −3.5 −7.5 ~ +0.5
Distortion at 1 mV RF Input % 1.5 < 5
S/N ratio at 1 mV RF Input (CCITT Filter ON, Compander ON) dB 75 > 65
Selectivity (NQ20 dB) 6 dB Bandwidth − kHz 13 > 10

6 dB Bandwidth + kHz 13 > 10

Image Rejection Ratio (12dB SINAD, CCITT Filter ON)

1st Image fo−14.32 MHz×2dB 35 > 30
2nd Image fo−455 KHz×2dB 55 > 30

Transmitter

RF Power (50 Ω Load) dBm −6.5 −9.5 ~ −3.5
Modulation Sensitivity dBm −20 −24 ~ −16
Frequency Response 0.3 kHz dB −2.5 −6.5 ~ +1.5

3.0 kHz dB −1.5 −5.5 ~ +2.5
Frequency Tolerance (25 °C) Hz 0 ±1500
Code Deviation kHz 8 < 11
Distortion % 1.5 < 5
Adjacent CH Power (50 KHz Offset, 12.5 KHz BW)

(+) dB 55 > 50
(−)dB55> 50

S/N Ratio (CCITT Filter ON, Compander ON) dB 40 > 35

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Telephone Line Unit Nominal Limit

Off-hook Impedance (at 1 kHz) ohm 1000 500 ~ 1500
Off-hook DC Resistance (DC 40 mA) ohm 250 100 ~ 300
On-hook Impedance 20 Hz (75 Vrms) kohm 25 > 10
Minimum Ringer Input Level V 25 < 40
Pulse Dialing

a. Dialing Rate 10 pps pps 10 8.0 ~ 11.0
b. Make Rario 10 pps % 40 36 ~ 42

DTMF Output (600 Ω load)

a. Minimum Level On Single Tone Low Group dBm −7> −10

High Group dBm −5> −8
b. DTMF Level dBm −3< 0
c. DTMF Frequency Row 1 Hz 697 687 ~ 707

Row 2 Hz 770 759 ~ 781

Row 3 Hz 852 840 ~ 864

Row 4 Hz 941 927 ~ 955

Column 1 Hz 1209 1191 ~ 1227

Column 2 Hz 1336 1316 ~ 1356

Column 3 Hz 1477 1455 ~ 1499
d. Signal Length msec 100 > 90
e. Interdigital Pause msec 100 > 90

Handset Unit

RECEIVER

Sensitivity 12 dB SINAD (CCITT Filter ON) dBm −115 < −107
Frequency Response 0.3 kHz dB 1 −3.0 ~ +5.0

3.0 kHz dB −5.5 −1.5 ~ −9.5
Audio Output Level mV 155 110 ~ 215
Distortion at 1 mV RF Input % 1.5 < 5
S/N ratio at 1 mV RF Input (CCITT Filter ON, Compander ON) dB 70 > 60
Selectivity (NQ20dB) 6 dB Bandwidth − kHz 13 > 10

6 dB Bandwidth + kHz 13 > 10

Image Rejection Ratio (12 dB SINAD, CCITT Filter ON)

1st Image fo+14.32 MHz×2dB 30 > 20

2nd Image fo+455 KHz×2dB 55 > 30
Ringer Level at 30 cm from Speaker (Bell Sound)
Frequency 2.2 kHz +20 kHz dBSPL 90 > 75
Page Level at 30 cm from Speaker
Frequency 2.0 kHz dBSPL 85 >75

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Transmitter Unit Nominal Limit

RF Power (50 Ω Load) dBm −7 −10 ~ −4
Modulation Sensitivity mV 10.5 7 ~ 15
Frequency Response 0.3 kHz dB −1 −5 ~ +3

3.0 kHz dB −1.5 −5.5 ~ +2.5
Frequency Tolerance (25 °C) Hz 0 ±1500
Code Deviation kHz 8 < 11
Distortion % 1 < 5
Adjacent CH Power
(Input 130 mV, 50 KHz Offset, 25 KHz BW)

(+) dB 55 > 50

(−)dB55> 50
S/N Ratio
(CCITT Filter ON, Compander ON) dB 40 > 35

Power Consumption

Base Unit

a. Standby Charge Off mA 70 < 90
b. Standby Charge ON mA 165 150 ~ 190

c. Talk mA 110 < 130
Charge Current (at CHG CONTACT) mA 90 80 ~ 100
Portable Unit

a. Stand-by mA 3.4 < 4

b. Talk mA 85 < 100
Battery Low Detect Voltage V 3.3 3.0 ~ 3.6

Battery: Ni-Cd Battery 600 mAH (@1.2 V × 3 = 3.6)

Memory: 10 Memories (16 Digits) + 1 Redial Memory (32 Digits)

Operating Temperature: −10 °C ~ 50°C
Storage Temperature: −20 °C ~ 60°C

Requirements Compliance

Unit is designed to fully meet with UL1459 and FCC Rules, Part 15 and 68.

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