Panasonic KX-T7740X (serv.man2) Service Manual ▷ View online
14 ACCESSORIES AND PACKING MATERIALS
21
KX-T7740X-B
Note:
1. RTL (Retention Time Limited)
1. RTL (Retention Time Limited)
The marking (RTL) indicates that the Retention Time is
limited for this item.
After the discontinuation of this assembly in production, the
item will continue to be available for a specific period of
time. The retention period of availability depends on the
type of assembly and the laws governing parts and product
retention. At the end of this period, the assembly will no
longer be available.
limited for this item.
After the discontinuation of this assembly in production, the
item will continue to be available for a specific period of
time. The retention period of availability depends on the
type of assembly and the laws governing parts and product
retention. At the end of this period, the assembly will no
longer be available.
2. Important safety notice
Components identified by the
mark indicates special
characteristics important for safety. When replacing any of
these components, only use specified manufacture´s parts.
these components, only use specified manufacture´s parts.
3. The S mark means the part is one of some identical parts.
For that reason, it may be different from the installed part.
4. ISO code (Example : ABS-94HB) of the remarks column
shows quality of the material and a flame resisting grade
about plastics.
about plastics.
5. RESISTORS & CAPACITORS
Unless otherwise specified;
All resistors are in ohms (
All resistors are in ohms (
Ω), k=1000Ω, M=1000kΩ
All capacitors are in MICRO FARADS (µF), p=µ(µF)
*Type & Wattage of Resistor
*Type & Wattage of Resistor
15.1. CABINET AND ELECTRICAL
PARTS
Ref.
No.
Part No.
Part Name & Description
Remarks
1
PSKM1097Z2
CABINET BODY
ABS-
94HB
94HB
2
PSHR1265Z
TEL CARD COVER
PC
3
PSGD1067Z
TEL CARD
4
PSHR1266Z
FUNCTION CARD COVER
PC
5
PSGD1068Z
FUNCTION CARD
6
PSBX1104Y2
BUTTON, 4CO
ABS-
94HB
94HB
7
PSBX1105Z2
BUTTON, FINCTION
ABS-
94HB
94HB
Ref.
No.
Part No.
Part Name & Description
Remarks
8
PSBX1100X2
BUTTON, CO
ABS-
94HB
94HB
9
PSBX1106Z2
BUTTON, FINCTION
ABS-
94HB
94HB
10
PSSX1023Z
KEYBOARD SWITCH
11
PSYF1042Z2
CABINET COVER
PS-94HB
11-1
PSHA1002Z
RUBBER PARTS, LEG
12
PSYET7740XB
NAME PLATE (for Made in
Japan)
Japan)
12
PSYET7740XBM
NAME PLATE (for Made in
Malaysia)
Malaysia)
15.2. ACCESSORIES AND PACKING
MATERIALS
Ref.
No.
Part No.
Part Name & Description
Remarks
A1
PSJA1068Z
TEL CORD
A2
PSMH1239Z
ANGLE
A3
XTW3+12PFJ7
SCREW
A4
XZB10X10A04
PROTECTION COVER
A5
PSYL1003Z2
STAND
ABS-
94HB
94HB
A6
PSQW1775X
LEAFLET, QUICK REFERENCE
GUIDE (ENGLISH)
GUIDE (ENGLISH)
A7
PSQW1793X
LEAFLET, REFERENCE GUIDE
(SPANISH)
(SPANISH)
P1
PSPK2301Z
GIFT BOX (for Made in Japan)
P1
PSPK2302Z
GIFT BOX (for Made in
Malaysia)
Malaysia)
P2
PQPP170Z
PROTECTION COVER
15.3. MAIN BOARD PARTS
Ref.
No.
Part No.
Part Name & Description
Remarks
PCB1
PSWPT7740X
MAIN BOARD ASS´Y (RTL)
(ICS)
IC1
C2ABEE000023
IC
IC2
C0JBAC000141
IC
IC3
PQVIBA05FPE2
IC
S
IC4
C0EBJ0000410
IC
(TRNSISTORS)
Q1
PQVTDTA143EU
TRANSISTOR(SI)
S
Q2
2SC4081R
TRANSISTOR(SI)
S
Q11
PSVTUMA7NTR
TRANSISTOR(SI)
S
Q12
PSVTUMA7NTR
TRANSISTOR(SI)
S
Q13
PSVTUMA7NTR
TRANSISTOR(SI)
S
Q14
PQVTDTA143XU
TRANSISTOR(SI)
S
Q15
B1HBGBA00001
TRANSISTOR(SI)
Q16
B1HBGBA00001
TRANSISTOR(SI)
Q17
B1ABGB000020
TRANSISTOR(SI)
(DIODES)
D1
B0EDER000009
DIODE(SI)
D2
MA111
DIODE(SI)
S
D3
PSVDUDZS13B
DIODE(SI)
D11
PSVD1SRCT
LED
S
D12
PSVD1SRCT
LED
S
D13
PSVD1SRCT
LED
S
D14
PSVD1SRCT
LED
S
D15
PSVD1SRCT
LED
S
D16
PSVD1SRCT
LED
S
D17
PSVD1SRCT
LED
S
D18
PSVD1SRCT
LED
S
D19
PSVD1SRCT
LED
S
15 REPLACEMENT PARTS LIST
22
KX-T7740X-B
Ref.
No.
Part No.
Part Name & Description
Remarks
D20
PSVD1SRCT
LED
S
D21
PSVD1SRCT
LED
S
D22
PSVD1SRCT
LED
S
D23
PSVD1SRCT
LED
S
D24
PSVD1SRCT
LED
S
D25
PSVD1SRCT
LED
S
D26
PSVD1SRCT
LED
S
D27
PSVD1SRCT
LED
S
D28
PSVD1SRCT
LED
S
D29
PSVD1SRCT
LED
S
D30
PSVD1SRCT
LED
S
D31
PSVD1SRCT
LED
S
D32
PSVD1SRCT
LED
S
D33
PSVD1SRCT
LED
S
D34
PSVD1SRCT
LED
S
D35
PSVD1SRCT
LED
S
D36
PSVD1SRCT
LED
S
D37
PSVD1SRCT
LED
S
D38
PSVD1SRCT
LED
S
D39
PSVD1SRCT
LED
S
D40
PSVD1SRCT
LED
S
D41
PSVD1SRCT
LED
S
D42
PSVD1SRCT
LED
S
(CAPACITORS)
C1
ECUV1H103KBV
0.01
S
C2
ECJ1VC1H151J
150P
C3
PQCUV1A225ZF
2.2
S
C4
ECUV1H103KBV
0.01
S
C5
F2G1E4700013
47
C6
ECUV1C104ZFV
0.1
C7
F2G0J1020008
1000
C8
ECUV1C104ZFV
0.1
C9
ECUV1H120JCV
12P
C10
ECUV1H120JCV
12P
C11
ECUV1H103KBV
0.01
S
Ref.
No.
Part No.
Part Name & Description
Remarks
C12
EEE0JA221WP
220
S
C13
ECUV1C104ZFV
0.1
(RESISTORS)
R1
ERJ3GEYJ221
220
R2
ERJ3GEYJ221
220
R3
ERJ3GEYJ103
10K
R4
ERJ3GEYJ103
10K
R5
ERJ3GEYJ101
100
R6
ERJ3GEYJ222
2.2K
R7
ERJ3GEYJ472
4.7K
R8
ERJ3GEYJ102
1K
R9
ERJ3GEYJ391
390
R10
ERJ3GEYJ391
390
R11
ERJ3GEYJ105
1M
R12
ERJ3GEYJ332
3.3K
R15
PQ4R10XJ152
1.5K
S
R21
ERJ3GEYJ221
220
R22
ERJ3GEYJ221
220
R23
ERJ3GEYJ221
220
R24
ERJ3GEYJ221
220
R25
ERJ3GEYJ221
220
R26
ERJ3GEYJ221
220
R27
ERJ3GEYJ221
220
R28
ERJ3GEYJ472
4.7K
(COMPONENTS COMBINATION)
RA1
EXB38V472JV
RESISTOR ARRAY
(JACK)
JK1
K2LB104D0005
JACK, TEL
(TRANSFORMER)
T1
PSLT9Z4A
TRANSFORMER
S
(CRYSTAL OSCILLATOR)
X1
H0J400400011
CRYSTAL OSCILLATOR
16 FOR THE SCHEMATIC DIAGRAM
Note:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
23
KX-T7740X-B
17 SCHEMATIC DIAGRAM
D33
CO23
D40
CO30
CO21
E3
E4
D18
CO8
D5V
B3
CO28
D20
CO10
F8
CO3
B7
F16
B1
F12
D37
CO27
F15
B8
F13
F1
Q13
1
4
3
2
5
D21
CO11
B9
CO2
CO5
D23
CO13
D26
CO16
F5
D22
CO12
CO32
F10
CO25
Q12
1
4
3
2
5
CO26
B2
CO19
CO8
D16
CO6
B5
D30
CO20
D31
CO21
E2
F3
D17
CO7
D34
CO24
CO4
CO18
D28
CO18
E5
CO1
D25
CO15
F7
CO6
D32
CO22
CO9
A3
CO27
CO22
F4
CO29
F14
CO14
D29
CO19
D24
CO14
CO12
CO10
B6
D11
CO1
CO31
CO11
F9
B4
F11
CO20
A5
CO7
D13
CO3
D39
CO29
CO23
D35
CO25
CO17
A6
CO16
D19
CO9
D12
CO2
CO13
A4
CO30
D38
CO28
CO15
F6
D14
CO4
E1
A1
F2
B10
A2
Q11
1
4
3
2
5
D15
CO5
D27
CO17
D36
CO26
CO24
A7
D42
CO32
D41
CO31
220
R21
220
R25
220
R27
220
R23
220
R22
220
R24
220
R26
Q16
1
6
2
Q16
4
3
5
Q15
1
6
2
Q15
4
3
5
RA1
4.7K
1
2
3
4
5
6
7
8
R28
4.7K
Q17
Q14
C[4]
C[1]
K[8]
K[5]
K[6]
K[0]
K[3]
K[7]
K[2]
K[1]
C[0]
L[22]
L[20]
L[18]
L[16]
L[14]
L[12]
L[10]
K[4]
K[9]
C[2]
C[3]
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
(1)
KX-T7740X-B MAIN BOARD NO.1
(3)
(2)
(4)
24
KX-T7740X-B
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