Panasonic KX-FT21BX User manual

-1-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
Simplified
KX-FT21BX
©1999 Kyushu Matsushita Electric Co., Ltd.
All rights reserved. Unauthorized copying and distribution is a violation of law.
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians.
Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury
or death.
Please file and use this manual together with the Service Manual for model KX-FT21LA, Order No.KM79905276C3
This Service Manual indicates the main differences between: Original KX-FT21LA and KX-FT21BX/KX-FT21BX-W.
ORDER NO. KM79907293A3
Personal FAX
(for Asia, Middle Near and Other Areas)
KX-FT21BX-W

-2-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
Applicable Lines: Public Switched Telephone Network
Document Size: Max. 216 mm (8 1/2") in width
Max. 600 mm (23 5/8") in length
Effective Scanning Width: 208 mm (8 3/16")
Recording Paper Size: 216mm x max. 30m ( 8 1/2x 98’) roll
Effective Printing Width: 208 mm (8 3/16")
Transmission Time*: Approx. 15 sec./page (Original mode)**
Approx. 30 sec./page (G3 Normal mode)
Scanning Density: Horizontal: 8 pels/mm (203 pels/inch)
Vertical:
3.85 lines/mm (98 lines/inch)-STANDARD mode
7.7 lines/mm (196 lines/inch)-FINE/HALF TONE mode
15.4 lines/mm (392 lines/inch)-SUPER FINE Mode
Halftone Level: 64-level
Scanner Type: Contact Image Sensor (CIS)
Printer Type: Thermal Printing
Data Compression System: Modified Huffman (MH), Modified READ (MR)
Modem Speed: 9,600/7,200/4,800/2,400 bps; Automatic Fallback
Operating Environment: 5°C - 35°C (41°F - 95°F), 45% - 85 % RH (Relative Humidity)
Dimensions (HxWxD): 122x338x240 mm (4 13/16"x 13 5/16" 9 7/16")
Mass (Weight): Approx. 2.5 kg (5.5 lb.)
Power Consumption: Standby: Approx. 5.5 W
Transmission: Approx. 17 W
Reception: Approx. 30 W (When receiving the CCITT No. 1 Test Chart)
Copy: Approx. 30 W (When copying the CCITT No. 1 Test Chart )
Maximum: Approx. 120 W (When copying a 100% black document)
Power Supply: 220 -240 V AC, 50/60 Hz
* Transmission speed depends upon the contents of the pages, resolution, telephone line conditions and capability of the
other party’s machine.
** The 15 second speed is based upon the CCITT No. 1 Test Chart .
Note:
Any details given in these instructions are subject to change without notice.
The pictures and illustrations in these instructions may vary slightly from the actual product.
SPECIFICATIONS (Change from original page 9)

-3-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
CONTROL PANEL (Change from original page 13)
Power cord
To the single
telephone line
Connect to “LINE”.
To the power outlet
(220V–240 V) Telephone
line cord
Handset cord

-4-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
Program mode Table (Change from original page 55)
Code Function Set Value Default Remote setting
001 Set the date and time mm/dd/yy hh:mm AM/PM --------- NG
002 Your logo --------- --------- NG
003 Your fax number --------- --------- NG
004 Print transmission report 1:ERROR 2:ON 3:OFF ERROR OK
007 FAX ring count 1 to 4 rings 1 ring OK
013 Dialing mode 1:PULSE/2:TONE TONE OK
022 Journal auto print 1:ON 2:OFF ON OK
023 Overseas mode 1:ON 2:OFF OFF OK
025 Delayed send ON/OFF OFF NG
030 Silent FAX recognition ring 3 to 9 rings 3 rings OK
031 Ring detection 0:OFF 1:ON OFF OK
041 FAX activation code ON/OFF ON/ID=*9 NG
046 Friendly reception 1:ON 2:OFF ON OK
049 Auto disconnect --------- ON ---------
058 Original setting 1:NORMAL/2:LIGHT/3:DARKER NORMAL OK
070 FAX pager call ON/OFF OFF NG
076 Connecting tone 1:ON 2:OFF ON OK
077 Auto answer mode 1:FAX ONLY/2:TEL/FAX FAX ONLY OK
078 TEL/FAX delay ring 1 to 4 rings 1 OK
080 Set default YES/NO NO NG
501 Pause time 001~600 X 100 ms 030 OK
502 Flash time 01~90 X 10 ms 10 OK
503 Dial speed 1:10pps 2:20 pps 10 OK
520 CED frequency 1:2100Hz 2:1100Hz 2100 OK
521 International mode 1:ON 2:OFF ON OK
522 Auto standby 1:ON 2:OFF ON OK
523 RCV EQL. 1:ON 2:OFF OFF OK
524 SND EQL. 1:ON 2:OFF OFF OK
544 Document feed position adjustment value set 01~99 step --------- OK
553 Monitor on FAX communication select 1:OFF 2:P-B 3:ALL OFF OK
554 Modem test Press "START". --------- NG
555 Scanner test Press "START". --------- NG
556 Motor test Press "START". --------- NG
557 LED test Press "START". --------- NG
558 LCD test Press "START". --------- NG
559 Document jam detection select 1:ON 2:OFF ON OK
561 Key test Press any key. --------- NG
563 CCD position adjustment value set 00~30 mm --------- OK
570 Break % select 1:61% 2:67% 61% OK
571 ITS auto redial time set 00~99 014 OK
572 ITS auto redial line disconnection time set 001~999 set 030 OK
573 Remote turn-on ring number set 01~99 15 OK

-5-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
(Change from original page 56)
Code Function SetValue Default Remote setting
590 FAXauto redial time set 00~99 05 OK
591 FAXauto redial line disconnection time set 001~999 045 OK
592 CNGtransmitselect 1:OFF/2:ALL/3:AUTO ALL OK
593 Time between CED and 300 bps 1:75/2:500/3:1s 75 ms OK
594 Overseas DIS detection select 1:1st/2:2nd 1st OK
595 Receive error limit value set 001~999 100 OK
596 Transmitlevel set 15~00dBm -10 OK
598 Modem sesitivity 20~48 45 OK
717 Transmitspeed select 1:9600/2:7200/3:4800/4:2400bps 9600bps OK
718 Receive speed select 1:9600/2:7200/3:4800/4:2400bps 9600bps OK
719 Ringer off in TEL/FAXmode 1:ON/2:OFF ON OK
721 Pause tone detect 1:ON/2:OFF ON OK
722 Redial tone detect 1:ON/2:OFF ON OK
763 Friendlyreception CNGdetection select 1:10S/2:20S/3:30S 20S OK
771 T1 timer 1:35 sec/2:60 sec 35 sec OK
774 T4 Timer 00~99 (X100ms) 00 OK
815 Sensor check Press "START". --------- NG
844 Original setting 1:NORMAL/2:LIGHT/3:DARKER NORMAL OK
991 Transmit basic list 1: START --------- OK
992 Transmit advanced list 1: START --------- OK
994 Transmit journal report 1: START --------- OK
996 Journal 3 1: START --------- OK
999 Transmit service list 1: START --------- OK

-6-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
Set Value
Code Set Value
4-3. USER MODE (The list below is an example of the SYSTEM SETUP LIST the unit prints out.)
(Change from original page 82)
Code

-7-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
3-9. Power Supply Board Section (Change from original pages 72~75)
(1) Key components for troubleshooting
Check the following parts first: F101, D101-D104, C106, Q101, PC101 and IC101.
This comes from our experience with experimental tests.For example:power supply and lightning surge voltage test, withstanding
voltage test, intentional short circuit test, etc.
Caution:
If you find a melted fuse in the unit, do not turn on the power until you locate and repair the faulty parts (except for the fuse);
otherwise the fuse will melt again and you cannot pinpoint the faulty point.
In most cases, the symptom is that nothing is output.It is more likely that the fault is in the primary side rather than the secondary
side.Check the primary side first.
Input
Circuit
AC
Input
Surge
Absorber
Circuit
G
H
5V
24V
Kick-on
Voltage
Circuit
E
IC101
F
GND
Control
Circuit
R102
R103
Converter
Circuit C
D5V
Output
Circuit
24V
Output
Circuit
+
-
Rectifier
Circuit
A
B
C106
Error Detecting
Circuit
POWER SUPPLY BLOCK DIAGRAM
DUMMY LOAD to check voltage
1
2
3
4
5
6
7
8
V
V
V
GND
5V
24V
CN301
24.5V±0.5V
5.0V±0.25V
4.7k
2W
33
2W
: Volt Meter
When you check voltage in
a power supply unit alone,
use this dummy load.
If the dummy load is not
available, connect the main
P.C.B. to the analog P.C.B.
Surge
Absorber
Circuit

-8-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
(2)Troubleshooting flow chart
Is F101 open?
YES
Replace F101.
Is D101-D104 short?
YES
Replace D101-D104.
NO
NO
24V output OK?
24V output OK?
5V output OK?
Replace the broken part and IC101.
Replace D202.
NO
NO
YES
Are R107, R109
and D106 OK?
YES
YES
NO
NO
Are D-G, D-S, and
S-G (Q101) short?
Replace Q101 and R105.
Power ON
Power OFF
Power OFF
Power ON
Power OFF
YES
NO
(Control circuit check)
A
A
* When testing for a short
circuit, turn off first and then
turn on when you start to
check output voltage (24V or
5V) as illustrated in the flow
chart.
* An analog tester is
recommended to use for
checking a short circuit.

-9-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
24V output OK?
Replace the broken part.
Are D201, IC201, PC101
and R222 OK?
YES
NO
YES
NO
Replace the whole board.
A
24V output OK?
Are R108, D108, R125
and D107 OK?
NO
YES
Replace the broken part and IC101.
YES
NO
(Control circuit check)
A
Power ON
Power ON
Power OFF
Power OFF
Broken parts repair details
(D101, D102, D103, D104)
Check for a short-circuit in terminal 4. If D101, D102, D103 and D104 are short-circuited, F101 will melt (open).
In this case, replace all of the parts (D101, D102, D103, D104, F101).
(Q101)
The worst case of Q101 is a short-circuit between the Drain and Gate because damage expands to the peripheral
circuit of Q101.
This is due to a very high voltage through the Gate circuit which is composed of R107, R109, D106 and IC101.
You should change all of the parts listed as follows.
F101, Q101, R107, R109, D106, IC101
(D201)
If D201 is broken, the oscillation circuit in the power supply cannot operate. Check it with an electric tester.

-10-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
Code Function SetValue Effective Range Default Remarks
591 Setting the FAXredial
interval 001~999 sec 001~999 045 sec Sets the FAXredial interval during FAX
communication.
Lets you selectthe CNGoutputduring
FAXtransmission.
1:OFF ALL: CNG is outputatphase A.
592 2: ALL 1, 2, 3 ALL AUTO: CNG is output onlywhen
3:AUTO automatic dialing is
performed.
OFF: CNG is not output at phase A.
593 Setting the interval between CED and the
300 bps signal
1:75 msec 2:500
msec 3:1000
msec 1,2, 3 75 msec Sets the interval between the CED
signal and subsequent300 bps
signal.
Sets the recognition format of the DIS
signal.
1: Detects on the 1:Detects the first DIS signal sent
594 1st time. Detects from the receiver during FAX
2: Detects on the 1, 2 on the transmission.
2nd time. 1st 2:Ignores the first DIS signal sent
time. from the receiver during FAX
transmission.
595 Setting an acceptable
reception error value 001~999 X number
of times 001~999 100 Sets the number ofacceptable error
lines when the FAXreconstructs the
received data.
596 Setting the transmit
level - 15~00 - 15~00 - 10 dBm Selects the FAXtransmission level.
(Increase the level when the telephone
line condition is poor.)
598 Modem sensitivity 20~48 45 See page 42.
717 Transmitspeed select
1:9600BPS
2:7200BPS
3:4800BPS
4:2400BPS
1~4 9600 BPS Adjusts the speed to starttraining
during FAXtransmission.
718 Receive speed select
1:9600BPS
2:7200BPS
3:4800BPS
4:2400BPS
1~4 9600 BPS Adjusts the speed to starttraining
during FAXreception.
719 Ringer offin TEL/FAX
mode 1:ON 2:OFF 1,2 ON Sets the ringer switch off when a call is
received in the TEL/FAXmode.
721 Pause tone detect 1:ON 2:OFF 1,2 ON Selects the tone detection for pauses
in dialin
g
.
722 Redial tone detect 1:ON 2:OFF 1,2 ON Selects the tone detection mode after
redialin
g
.
763 CNGdetecttime 1:10 sec 2:20 sec
3:30 sec 1, 2, 3 20 sec Selects the CNG detection time of
friendl
y
reception.
771 T1 timer 1:35 sec 2:60 sec 1, 2 35 sec Sets a highervalue when the response from the other partyneeds more time
during FAXtransmission.
774 T4 timer 00~99 (X100ms) 00~99 00 Use this function when delay occurs
onthe line and communication does
notwork well.
815 Sensorcheck Press "START".
844 Original setting 1:NORMAL
2:LIGHT
3:DARKER 1,2,3 NORMAL Use this feature when you need to
transmit and copya documentwith very
faint writing or verydark writing.
Designation ofCNG
sending
Setting the overseas
DIS detection
4-4. Service FunctionTable (Change from original page 86)

-11-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
10. POWER SUPPLY BOARD SECTION (Change from original page 146)
This power supply board uses the switching regulator method.
[Input Circuit]
The input current goes into the input rectifier circuit through the filter circuit.The filter circuit decreases the noise voltage and
the noise electric field strength.
[Rectifier Circuit]
The input current is rectified by D101,D102,D103 and D104 and charges C106 to make DC voltage.Then it supplies power
to the converter circuit.
[Kick-on voltage circuit]
Bias is applied to the Q101 gate via this circuit when the AC power is turned on and Q101 begins operating.
Input
Circuit
AC
Input
Surge
absorber
circuit
G
H
5V
24V
Kick-on
Voltage
Circuit
E
IC101
F
GND
Control
Circuit
R102
R103
Converter
Circuit C
D5V
Output
Circuit
24V
Output
Circuit
+
-
Rectifier
Circuit
A
B
C106
Error Detecting
Circuit
Surge
absorber
circuit
O.C.L
Over voltage
Q101
A-B Voltage Wave Form
C-D Voltage Wave Form
E-F
G-H Voltage Wave Form
0
0
0
Block Diagram

-12-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
L
Error amp rectifier
Control IC
n
1 : n 2
Coil width value
of the ratio SecondaryPrimary
Load
24V
E
1
Gate signal
T
ON T OFF
T=1/f= fixing
T
ON + T OFF =T
Q
1
I IN
D 1
E 2
V 0
V R
light load heavy load
00 1.0
= Duty ratio
=
Ton
T
0.5
1
2
3
4
V
0 /E 1
Output/Input voltage value of ratio
The following is an overview of how the power supply unit is controlled.
The control method of this power supply unit is pulse width modulation.
When Q
1 is ON, the energy is charged in the transfer primary coil according to E 1 .
When Q
1 is OFF, the energy is output from the secondary transfer as follows.
L ? D1 ? Load ? L
Then the power is supplied to the Load. When Q
1 is ON, power is not output from the secondary side.
The output voltage is fed back in the control IC according to the error amp rectifier.
Then depending on how T
ON is controlled, stabilization occurs.
Also, when the current load becomes too large, in order to decrease the voltage output, the increase
in is controlled and the output voltage is stabilized.
Therefore, basically the timing: Ton/Toff of Q1 controls the output voltage.
increases

-13-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
[Surge Absorber Circuit]
This circuit is for absorbing surge voltage generated by the transformer.
[Control Circuit and Detecting Circuit]
The control circuit amplifies the output with increased voltage detected in the error detecting circuit.Then it drives the main
transistor.
In this power supply, the duty ratio is defined by changing the ON period of the main transistor.
This is shown as follows.
When the output voltage of the 24V circuit increases, the current of the photo coupler PC101 increases, the pulse width of
the output control IC becomes narrower and the ON period of Q101 becomes shorter.
[Over Current Limiter (O.C.L)]
The highest drain current (Q101) is limited by a limiter circuit (IC101) of 24V.The 24V output is limited by this circuit.
[OverVoltage Circuit]
If the 24V output increases because the error detecting circuit or control circuit is broken, IC101 will recognize this signal
and output becomes 0V.
Dummy load method (to quickly check the power supply output)
Refer to 2.3.3.6. Power Supply Board Section.

-14-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W MEMO

-15-
KX-FT21BX/KX-FT21BX-W KX-FT21BX/KX-FT21BX-W
12345678 9 10 11 12
G
F
E
D
C
B
A
H
SCHEMATIC DIAGRAM (ANALOG CIRCUIT) (Change from original page 158)
D102
C102 0.1
D202 IC202
PC101
R223
100
C205
1/50
CN301
1
2
3
4
5
6
7
8
24V
24V
24V
GND
GND
GND
5V
GND
C202
D201
T101
TRANS
1000p/1K
GD
S
Q101
D108
D107 10K
R125 R108
15
C103
L101
R101
1M 1/2
C101
0.22 GND
F101
T3.15A 250V
CN31
LN
C104
2200p 2200p
C105
2200p C106
C107
47p
R106
R128
47/1
C201 470/35
C204 47/35 C203
1000/16
R121
10K
R222 2.2K
R221
2.2K
R224
5K
R225
IC201
3.3K
VR201
27K
R205
680/2
PC101
56/400
D101
TH101
D109
R105
0.22/2
R102
R123
R127 C124
1.8K 0.1
C121
R126
5.6K
C122
0.22/16
C123
680p
C109 47/35
4700p
R10382K 82K
R122 R133
R132 150K 150K 150K 120K
R109 D106
R107
68
10
R131 R130 R129
120K 200K/2
R104
200K/2
R110 C108
D105
L103 1000p/1K
150K
220 390
D103 D104
ZNR101
750V
IC101
4
3
2
1
5
6
7
8
Cycle=13 s
12V
0V
m
Cycle=13 s
540V
0V
m
Cycle=13 s
11V
19V
0V
m
Cycle=13 s
25V
48V
0V
m
20V
36V
0V

-16-
KX-FT21BX/KX-FT21BX-W KX-FT21BX/KX-FT21BX-W
T3.15AH 250V
F101
R125
R107
R122 S
D G
R127
R133
J8 T101
C223
R223
PC101
R121
R128
R129
R130
R131R132
R224
R225
24 G G G 5 G
C221
C224
CN301
R126
C121
C124
C122
R123
C123
1 85
R103
R102
CN31
68-4494A
7694V—0
N
L
SRF913EK
MITSUMI ELEC. CO., LTD.
PRIMARY
R222
R221
12345678 9 10 11 12
G
F
E
D
C
B
A
H
(COMPONENT VIEW)
PRINTED CIRCUIT BOARD (ANALOG BOARD) (Change from original page 159)
CAUTION
FOR CONTINUED PROTECTION AGAINST RISK OF
FIRE. REPLACE ONLY WITH
SAME TYPE
AND
RATINGS
OF FUSE
( F101 )
T3.15AH 250V
L101
R101
C102 R109 R105
R108
T101
C206
VR201
PC101
D106
TH101
D107
D109
IC101
ZNR101
F101
C101
D104
D103 C103
C104
C106
R106
R104
R110
L103
Q101 C109
C108 C107
D108
D105
D202
R205
J6
J5
J4
IC202 D201
IC201
C202
C205
C204 J10
J7
C201
CN301 18
C203
C105
D102
J1
J3
J2
D101
CN31
NL
SRF913EK PRIMARY
SECONDARY
(BOTTOM VIEW)

-17-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
CABINET,MECHANICAL AND ELECTRICAL PARTS LOCATION (Change from original page 167)
1. OPERATION PANEL SECTION
2
7
1
18
19
25
3
8
927
10
13
16
16
22
21
23
15
11
12
28
14
4
5
PCB3
6
24 17
20
A
A
A
A
26
CN3

-18-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
ACCESSORIES AND PACKING MATERIALS (Change from original page 172)
A6 , A8
P2
A7
P3
A4
A1
P4
P5
P1
A5
A3
A2

-19-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
REPLACEMENT PARTS LIST (Change from original pages 169~175)
This replacement parts list is for the KX-FT21BX only.
Ref. No. Part No. Part Name & Description Pcs
Model KX-FT21BX/KX-FT21BX-W 20 PFDG1123Z GEAR, PLATEN 1
Notes: 21 PFHG1064Z SEPARATION RUBBER 1
1. The marking (RTL) indicates that the Retention Time is limited for this item. 22 PFDE1101Z LEVER, ADJUSTMENT 1
After the discontinuation of this assembly in production, the item will 23 PFUS1173Z SPRING, DOCUMENT FEED 1
continue to be available for a specific period of time. The retention period 24 PFHX1251Z READING SHEET 1
of availability is dependent on the type of assembly, and in accordance 25 PFDJ1021Z PLATEN SPACER, R 1
with the laws governing part and product retention. After the end of this 26 PFBX1080Z1 KEY, FUNCTION S 1
period, the assembly will no longer be available. 27 PFBX1079Z1 KEY, 10 (For KX-FT21BX) S 1
2. Important safety notice. 27 PFBX1079X2 KEY, 10 (For KX-FT21BX-W) S 1
Components identified by the mark special characteristics important 28 PFBC1041Z1 KEY, START S 1
for safety.
When replacing any of these components, use only manufacturer's specified
parts. (2. UPPER CABINET/
3. The S mark indicates service standard parts and may differ from production THERMAL HEAD SECTION)
parts.
4. RESISTORS & CAPACITORS 50 PFKM1049Y1 HANDSET CRADLE (For KX-FT21 S 1
Unless otherwise specified. 50 PFKM1049Z2 HANDSET CRADLE (For KX-FT21 S 1
All resistors are in ohms ( W ) k=1000W, M=1000kW 51 PFHR1132Z COVER, HEAD 1
All capacitors are in MICRO FARADS( mF ) P= mmF 52 PFDE1098Z HEAD GUIDE, L 1
*Type &Wattage of Resistor 53 PFJHS017Z THERMAL HEAD 1
Type 54 PFDE1099Z HEAD GUIDE, R 1
ERC:Solid ERX:Metal Film PQRD:Carbon 55 PFBH1011Z1 BUTTON, HOOK (For KX-FT21BX
)
S1
ERD:Carbon ERG:Metal Oxide PQRQ:Fuse 55 PFBH1011Y BUTTON, HOOK (For KX-FT21BX
-
S1
PQ4R:Chip ERO:Metal Film ERF:Wire Wound 56 PFJS11Q45Z CONNECTOR, 11PIN 1
Wattage 57 PFDJ1018Z ROLLER HOLDER 2
10,16,18:1/8W 14,25,S2:1/4
W
12,50,S1:1/2W 1:1W 2:2W 5:5W 58 PFDN1032Z ROLLER, DOCUMENT FEED 1
59 PFDG1122Z GEAR, EXIT ROLLER 1
ECFD:Semi-Conductor ECCD,ECKD,PQCBC,PQVP : Ceramic
ECQS:Styrol ECQM,ECQV,ECQE,ECQU,ECQB : Polyester 60 PFQT1503Z CAUTION LABEL 1
PQCBX,ECUV:Chip ECEA,ECSZ,ECOS : Electrolytic 61 PFUS1172Z SPRING, THERMAL HEAD 4
ECMS:Mica ECQP : Polypropylene 62 PFDE1102Z1 LEVER, LOCK S 1
Voltage 63 PFJS02Q42Z CONNECTOR, 2PIN 1
ECQ Type ECQG ECSZ Type Others 64 PFAS50P003Z SPEAKER 1
ECQV Type 65 PFUS1179Z SPRING, LOCK LEVER 1
1H: 50V 05: 50V OF:3.15V OJ :6.3V 1V :35V 66 PFHE1019Z IMASEN FORM 2
2A:100V 1:100V 1A:10V 1A :10V 50,1H:50V 67 PFUS1176Z SPRING, OPERATION COVER O
P
1
2E:250V 2:200V 1V:35V 1C :16V 1J :63V 68 PFKM1048X1 MAIN CABINET (For KX-FT21BX) S 1
2H:500V OJ:6.3V 1E,25:25V 2A :100V 68 PFKM1048X2 MAIN CABINET (For KX-FT21BX-
W
S1
69 PFHX1268Y SHEET, IMASEN 1
Ref. No. Part No. Part Name & Description Pcs 70 PFUS1181Z SPRING, EARTH 1
71 PFDJ1013Z SPACER, ROLLER 1
CABINET AND ELECTRICAL PARTS 72 PFDN1034Z ROLLER, SEPARATION 1
73 PQUS10055Z SPRING, ONE WAY S 1
(1.OPERATION PANEL SECTION) 74 PFDE1059Z SPACER 1
75 PFDG1124Z GEAR, SEPARATION ROLLER 1
1 PFGP1140Z PANEL, LCD (For KX-FT21BX) 1 76 XUC2FY RETAINING RING 1
1 PFGP1140X PANEL, LCD (For KX-FT21BX-W) 1 77 PF0U1018Z IMAGE SENSOR 1
2 PFGV1009Z COVER, TEL CARD 1 78 PFJE1005Z LEAD, IMAGE SENSOR 1
3 PFGD1043Z TEL CARD 1 79 PFGT1482Z-J NAME PLATE (For KX-FT21BX) S 1
4 PFBX1078Z1 KEY, DIAL (For KX-FT21BX) 1 79 PFGT1531Z-J NAME PLATE (For KX-FT21BX-
W
S1
4 PFBX1078Z2 KEY, DIAL (For KX-FT21BX-W) 1
5 PFKR1014Z1 DOCUMENT GUIDE, L (For KX-FT21BX) 1
5 PFKR1014Z2 DOCUMENT GUIDE, L (For KX-FT21BX-W) 1
6 PFUS1170 SPRING, DOCUMENT LEVER 1
7 PFGG1039X1 OPERATION PANEL (For KX-FT21BX) 1
7 PFGG1039X2 OPERATION PANEL (For KX-FT21BX-W) 1 (3. LOWER SECTION)
8 PFKR1015Z1 DOCUMENT GUIDE, R (For KX-FT21BX) 1
8 PFKR1015Z2 DOCUMENT GUIDE, R (For KX-FT21BX-W) 1 100 PFMD1039Z FRAME, BOTTOM 1
9 PFDG1015Y GEAR, DOCUMENT GUIDE 1 101 PFHA1001Z LEG RUBBER 1
102 PFJP03S04Z AC INLET 1
10 PFJE1007Z LEAD, OPERATION 1 103 PQLB1E1 FERRITE CORE 1
11 PFJE1006Z LEAD, OPERATION 1 104 PQJS02Q59Y CONNECTOR, 2PIN 1
12 PFDE1096Z LEVER, DOCUMENT DETECTION 1 105 XWC4B WASHER 1
13 PFDE1100Z LEVER, READ DETECTION 1 106 PFUS1177Z SPRING, EARTH 1
14 PFUV1024Z COVER, OPERATION 1 107 PFJS08R44Z CONNECTOR, 8PIN 1
15 PQDR9685Y ROLLER, SUPPORT 1 108 PFDE1097Z LEVER, PAPER SENSOR 1
16 PFUS1171Z SPRING, ROLLER 2 109 PFUS1214Z SPRING, EARTH 1
17 PFDF1017Z SHAFT 1
18 PFDJ1020Z PLATEN SPACER, L 1
19 PFDN1033Z ROLLER, PLATEN 1

-20-
(Model KX-FT21BX/KX-FT21BX-W)
KX-FT21BX/KX-FT21BX-W
This replacement parts list is for the KX-FT21BX only.
Ref. No. Part No. Part Name & Description Pcs Ref. No. Part No. Part Name & Description & Value Pcs
DIGITAL BOARD PARTS
(4. GEAR CHASSIS SECTION) PCB1 PFWP1FT21BX DIGITAL BOARD ASS'Y (RTL) 1
130 PFJQ1015Z MOTOR 1
131 PFMH1069Z MOTOR PLATE 1
132 PFDG1119Z GEAR, IDLER A 3 (ICs)
133 PFDE1095Z ARM, RX 1
134 PFUS1062Z SPRING, GEAR C 3 IC1 PFVIT7E05 IC 1
135 PFDG1021Z GEAR C 3 IC2 PFWIFT21BX IC (ROM) 1
136 PFDG1022Z GEAR D 3 IC3 PFVIGM6256FF IC 1
137 PFDE1094Z ARM, TX 1 IC4 PFVIS80842AN IC 1
138 PFDG1121Z GEAR, CAM 1 IC5 PFVITC35133F IC 1
139 PQST2A04Z SENSOR, CAM 1 IC6 PFVIBU4066BF IC 1
IC7 PQVIBA12003 IC S 1
140 PFJS03Q43Z CONNECTOR, 3PIN 1 IC8 PQVINJM4558M IC S 1
141 PFUA1022Z CHASSIS, GEAR 1 IC9 PQVINJM4558M IC S 1
142 PFUS1169Z SPRING, ARM 1
143 PFDG1120Z GEAR, IDLER B 1 (TRANSISTORS)
Q1 2SB1197K TRANSISTOR(SI) [or 2SB1051] S 1
Q2 2SA933 TRANSISTOR(SI) 1
Q3 2SC4155R TRANSISTOR(SI) 1
ACCESSORIES AND PACKING MATERIALS Q4 2SC4155R TRANSISTOR(SI) 1
Q6 PQVTDTC114EU TRANSISTOR(SI) [or UN5211T] 1
A1 PFJXE0801Z HANDSET (For KX-FT21BX) 1 Q7 2SB1322 TRANSISTOR(SI) S 1
A1 PFJXE0805Z HANDSET (For KX-FT21BX-W) 1 Q8 PQVTDTC114EU TRANSISTOR(SI) [or UN5211T] 1
A2 PFJA1029Y CURL CORD (For KX-FT21BX) 1
A2 PFJA1029Z CURL CORD (For KX-FT21BX-W) 1 Q10 2SC4155R TRANSISTOR(SI) 1
A3 PQJA10075Z TEL CORD 1 Q11 2SC4155R TRANSISTOR(SI) 1
A4 PFUS1167Z STACKER 1 Q13 PFVTSI4431DY TRANSISTOR(SI) 1
A5 PFJA10038Y POWER CORD 1 Q14 PQVTDTC114EU TRANSISTOR(SI) [or UN5211T] 1
A6 PFQX1288ZA INSTRUCTION BOOK 1
A7 PFHP1063Z RECORDING PAPER 1
A8 PFQW1293Z QUICK GUIDE 1 (DIODES)
P1 PFPE1048Z-J PACKAGE ASS'Y (For KX-FT21BX) 1 D1 RLS71 DIODE(SI) 1
P1 PFPE1047Z-J PACKAGE ASS'Y (For KX-FT21BX-
W
1 D2 PFVDRMRLS245 DIODE(SI) 1
P2 PFPD1089Z CUSHION 1 D3 MA7200 DIODE(SI) S 1
P3 PFPN1187Z CUSHION 1 D6 1SS131 DIODE(SI) 1
P4 PFPN1186Z CUSHION 1
P5 PQPP10005Z BAG, POLYETHYLENE 1
(BATTERY)
BAT1 PQPCR2032H09 BATTERY S 1
(COILS)
L1 PQLQR1ET COIL 1
L2 PQLQR1ET COIL 1
L18 PQLQR1RM601 COIL S 1
(CRYSTAL OSCILLATORS)
X1 PFVC3276AZA CRYSTAL OSCILLATOR 1
X2 PFVC2073FZAT CRYSTAL OSCILLATOR 1
(COMPONENTS PARTS)
RA1 PFXBV8V151JV COMPONENTS PARTS 1
RA2 PFXBV8V151JV COMPONENTS PARTS 1
RA3 PFXBV8V151JV COMPONENTS PARTS 1
RA4 PFXBV8V151JV COMPONENTS PARTS 1