Panasonic TX-R20LA80 Service Manual ▷ View online
Power Supply Block Diagram
F 800
SW 800
P1
1
1
4
LINE
FILTER LF 800
-
D801
~
IC800
M
A
IN
P
S
CONT
ROL
7 9
5
3
2
4
1
T8
0
0
12 10
PC801
PC802
8
P2
14
,13
,12
4
,6
Q802
7
IC840
6
5
F840
1
12V
24
V
4
3
Q843
INVERTER
A7
14
,13
,12
4
,6
Q873
A
U
D
9
V_16V
Q890
12V
8V
D875
D876
30V
IC881
24V
5V
LCF´S
VSUPDIG 3,3V
V
SUPDRI 3,
3V
V
SUPCOM 3,
3V
VSUPIO
1 3,
3V
V
SUPIO
3 3
,3V
V
SUPVO 3
,3V
V
SUPFE 3
,3V
V
SUPDA
C
3
,3V
V
SUPLVDS 3
,3V
IC862
STBY
3
.3V
IC861
STBY
1
.8V
V
SUPDIG 1.8V
V
SUPFE 1.8V
LCF´S
LCF
V
SUP
A
U
8V
IC1501
33
36
45,7
5
77
86
,96
,1
14
124
133,
15
0
164
169
,18
5
170
192
197
V
SUPSIF 5V
V
SUPDIG 3
,3V
VSUPDRI 3
,3V
VSUPCOM
3
,3
V
VSUPIO
1 3,
3V
VSUPDIG
1,8V
VSUPLVDS 3,3V
VSU
PDA
C3
,3
V
VSUPFE 1,8V
VSUPFE 3,3V
VSUPVO 3,3
V
V
SUPIO
3 3
,3V
A
U
D
IO VID
E
O
P
R
O
C
E
S
SOR
IC251
AUDIO
AM
P
5V
A
U
D9V_16V
TUNER TU001
30V
5V
IC1120
EE
PR
OM
7
5
8
STBY
3.3V
Q170
1
V
5
L
E
N
A
P
V
5
A6
42-45
24V
A8
5
V2
5
STBY
3.3V
RM1050
STBY
3.3V
Q800
LCF
VSUPSIF 5V
18
VSU
PA
U8
V
A2
1
SERVICE
STBY
3.3V
PROTECTION
ST
BY
3.3V
5V
8V
30V
MA
IN
I
N
P
–
BO
A
R
D
A
–
BOA
RD
V
–
BO
A
R
D
PANEL
13
TX-R20LA80
10 Schematic Diagrams
10.1. Parts Location
14
TX-R20LA80
Cct Ref
Parts Number
Description
COMMON PARTS
EXPLODED VIEW
1
A-R20LA80
A P.C.B.
RTL
2
ENGF7701GF
TUNER
3
EUR765101C
REMOTE CONTROL
4
L0AA09B00005
SPEAKER
5
L5EDD5L00011
LCD PANEL
6
TBLA3489
PEDESTAL METAL PLATE
7
TBMA214
PANASONIC BADGE
8
TBX0E82701
POWER BUTTON
9
TKP0E16001
CONNECTOR COVER
10
TKX0E1601
PEDESTAL HINGE
11
TKXA21301
PEDESTAL COVER
12
TMX0E411-1
CHASSIS FRAME
13
TNP0EP008AA
P P.C.B.
RTL
14
TNP0EV008AA
V P.C.B.
RTL
15
TSX0E119
AC CORD
16
TTP0E0023
CONTROL BRACKET
ASSY
ASSY
17
TTU0E0087-1
BACK COVER
18
TBM0E1634
MODEL LABEL
MISCELLANEOUS COMPONENTS
R6RC/2P
BATTERY
TBLG3037
FOOT RUBBER
TES0E105-1
SPRING
TKP0E21801
LED/IR WINDOW
TKZX5181-1
VESA METAL
TMM8E18048
TAB-RELEASE CABLE
TPD0E9100
PAD FOR REMOTE
CONTROL
CONTROL
XTB3+10JFJK
SCREW
XTB4+10JFJ
SCREW
XTB4+15JFJK
SCREW
XTB4+18JFJK
SCREW
XTS3+8JFJ
SCREW
XTW3+10TFJ
SCREW
BOTCUS TPD0E0164
BOTTOM CUSHION
CARTON TPC0E5400
CARTON
FC1
J0KG00000054
FERRITE CORE
FC2
J0KG00000100
FERRITE CORE
TOPCUS TPD0E0163
TOP CUSHION
INSTRUCTION BOOKS
TQB0E0764AL
RUSSIAN
TQB0E0764AY
UKRAINIAN
I.C.s
IC251
IC251
C0ZAZ0000193
AUDIO AMPLIFIER
IC800
MR4030-7102
MAIN PS CONTROL
IC840
C0DBEMC00044 REGULATOR
IC861
C0DBEKH00002 REGULATOR
Cct Ref
Parts Number
Description
IC862
C0DBAMH00018 REGULATOR
IC881
C0DBAMH00018 REGULATOR
IC1120
X24CR20LA80
EEPROM
IC1500
C0EBE0000120
I.C. RESET
IC1501
C5AB00000029
AUDIO VIDEO
PROCESSOR
PROCESSOR
IC3800
C0ABAA000053
OPERATIONAL
AMPLIFIER
AMPLIFIER
IC3801
C0HBA0000241
IC FOR CCFL INVERTER
IC3802
AN78L15ME1
REGULATOR
PC801
B3PAA0000363
PHOTO COUPLER
PC802
B3PAA0000363
PHOTO COUPLER
RM1050 PNA4701M06TV LED RECEIVER
FUSES
F800
FUSES
F800
K5D312BNA005
MAIN FUSE
F840
37312500000
LINE FUSE
F850
ERBSE2R50U
MICRO CHIP FUSE
F3800
K5H4022A0031
CHIP FUSE
DIODES
D250
D250
B0ACCK000015
DIODE
D251
B0ACCK000015
DIODE
D252
B0ACCK000015
DIODE
D254
MAZ80270HL
DIODE
D800
B0HAMM000146 DIODE
D801
B0EBNT000007
DIODE
D802
B0AAGV000009
DIODE
D804
B0HAGV000004
DIODE
D806
MAZ20680A0LS
ZENER DIODE
D807
B0HAGV000004
DIODE
D808
B0HAGV000004
DIODE
D809
B0HAGV000004
DIODE
D810
MA2160LFS
DIODE
D811
ERZV10V621T2
VARISTOR
D840
B0HANP000004
DIODE
D841
B0JBSL000022
DIODE
D842
B0ACCK000005
DIODE
D844
B0BA02600018
ZENER DIODE
D846
B0ACCK000005
DIODE
D849
B0JCPE000028
DIODE
D866
CMS16TE12LQ
DIODE
D872
B0ACCK000005
DIODE
D875
B0HCMM000014 DIODE
D876
B0HCMM000014 DIODE
D877
USF5G49TE16Q DIODE
D878
MAZ80620ML
DIODE
D879
MAZ80620ML
DIODE
D881
CMS16TE12LQ
DIODE
D890
MAZ80820ML
DIODE
D891
B0ACCK000005
DIODE
D893
MAZ81500ML
DIODE
D894
MAZ81500ML
DIODE
11 Replacement Parts List
Important Safety Notice
Components identified by
mark have special characteristics important for safety.
* When replacing any of these components, use only manufacturer’s specified parts.
In case of ordering these spare parts, please always add the complete Model-Type number to your order.
RTL
(Retention Time Limited)
Note: 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 is
dependent on the type of assembly, and in accordance with the laws governing
part and product retention. After the end of this period, the assembly will no
longer be available.
available for a specific period of time. The retention period of availability is
dependent on the type of assembly, and in accordance with the laws governing
part and product retention. After the end of this period, the assembly will no
longer be available.
X
The marking (X) indicates that board should be exchanged for service.
15
TX-R20LA80
Cct Ref
Parts Number
Description
D1051
B3CKE0000007
DIODE
D1062
MAZ80820ML
DIODE
D1101
MA22D3900L
DIODE
D1102
MA22D3900L
DIODE
D1700
B0ACCK000005
DIODE
D3800
B0BC6R700006
DIODE
D3801
MA3X152E0L
DIODE
D3802
B0BC6R700006
DIODE
D3803
B0ACCK000005
DIODE
D3804
B0ACCK000005
DIODE
D3805
B0ACCK000005
DIODE
D3806
B0ACCK000005
DIODE
D3807
B0ACCK000005
DIODE
D3808
B0ACCK000005
DIODE
D3809
B0ACCK000005
DIODE
D3810
B0ACCK000005
DIODE
D3811
B0ACCK000005
DIODE
D3812
B0ACCK000005
DIODE
D3813
B0ACCK000005
DIODE
D3814
B0ACCK000005
DIODE
D3815
B0ACCK000005
DIODE
D3816
B0ACCK000005
DIODE
D3817
MA3X152E0L
DIODE
D3818
MA3X152E0L
DIODE
D3819
MA3X152E0L
DIODE
D3820
MA3X152E0L
DIODE
D3821
MA3X152E0L
DIODE
D3822
B0ACCK000005
DIODE
D3823
B0ACCK000005
DIODE
D3824
B0ACCK000005
DIODE
D3825
B0ACCK000005
DIODE
D3826
B0ACCK000005
DIODE
D3827
B0ACCK000005
DIODE
D3828
B0ACCK000005
DIODE
D3829
B0ACCK000005
DIODE
D3830
B0ACCK000005
DIODE
D3831
B0ACCK000005
DIODE
D3832
B0ACCK000005
DIODE
D3833
B0ACCK000005
DIODE
D3834
B0ACCK000005
DIODE
D3835
B0ACCK000005
DIODE
D3836
B0ACCK000005
DIODE
D3837
B0ACCK000005
DIODE
D3838
B0ACCK000005
DIODE
D3839
B0ACCK000005
DIODE
D3840
B0ACCK000005
DIODE
D3841
B0ACCK000005
DIODE
D3842
B0ACCK000005
DIODE
D3843
B0ACCK000005
DIODE
D3844
B0ACCK000005
DIODE
D3845
B0ACCK000005
DIODE
D3863
MAZ80620ML
DIODE
D3864
MAZ80820HL
ZENER DIODE
D3865
B0ACCK000005
DIODE
D3866
B0ACCK000005
DIODE
D3867
B0ACCK000005
DIODE
TRANSISTORS
Q122
Q122
BC847B
TRANSISTOR
Q123
BC847B
TRANSISTOR
Q250
BC847B
TRANSISTOR
Q251
B1ADCE000023
TRANSISTOR
Q253
B1ADCE000023
TRANSISTOR
Q254
B1ADCE000023
TRANSISTOR
Q255
B1ADCE000023
TRANSISTOR
Q256
BC847B
TRANSISTOR
Q257
BC847B
TRANSISTOR
Q800
BC847B
TRANSISTOR
Cct Ref
Parts Number
Description
Q802
BC847B
TRANSISTOR
Q840
BC847B
TRANSISTOR
Q841
BC847B
TRANSISTOR
Q842
BC847B
TRANSISTOR
Q843
TPC8116-H
TRANSISTOR
Q844
BC847B
TRANSISTOR
Q865
BC847B
TRANSISTOR
Q872
BC847B
TRANSISTOR
Q873
B1DHDC000028
TRANSISTOR
Q881
BC847B
TRANSISTOR
Q882
BC847B
TRANSISTOR
Q883
BC847B
TRANSISTOR
Q890
BC847B
TRANSISTOR
Q952
BC847B
TRANSISTOR
Q1100
B1MBACA00008 TRANSISTOR
Q1212
BC847B
TRANSISTOR
Q1217
BC847B
TRANSISTOR
Q1700
BC847B
TRANSISTOR
Q1701
B1DHDC000028
TRANSISTOR
Q3202
B1ADCE000023
TRANSISTOR
Q3205
BC847B
TRANSISTOR
Q3800
B1CFRE000002
TRANSISTOR
Q3801
B1HFCFA00037
TRANSISTOR
Q3802
B1GFCFAA0005 TRANSISTOR
Q3803
TPC8116-H
TRANSISTOR
Q3804
B1CFRE000002
TRANSISTOR
Q3805
TPC8116-H
TRANSISTOR
Q3806
B1HFCFA00037
TRANSISTOR
Q3807
B1GFCFAA0005 TRANSISTOR
Q3808
B1GFCFAA0005 TRANSISTOR
Q3809
B1GFCFAA0005 TRANSISTOR
Q3860
BC847B
TRANSISTOR
Q3861
B1ADCE000023
TRANSISTOR
Q3862
BC847B
TRANSISTOR
TRANSFORMERS
T800
T800
ETS28BF246AC
TRANSFORMER
T3801
ETJV15ZF21AC
TRANSFORMER
T3802
ETJV15ZF21AC
TRANSFORMER
T3803
ETJV15ZF21AC
TRANSFORMER
T3804
ETJV15ZF21AC
TRANSFORMER
T3805
ETJV15ZF21AC
TRANSFORMER
T3806
ETJV15ZF21AC
TRANSFORMER
COILS
L101
L101
ELJFC2R2KFB
COIL
L102
ELJFC2R2KFB
COIL
L103
TALV35VB100K
COIL
L121
G0C6R8JA0021
COIL TALV35VB6R8J
L250
EXC3BB221H
COIL
L251
EXC3BB221H
COIL
L252
J0JJC0000015
COIL
L253
J0JJC0000015
COIL
L254
J0JHC0000034
COIL
L255
J0JHC0000034
COIL
L256
J0JHC0000034
COIL
L257
J0JHC0000034
COIL
L258
ELJPA100KFB
COIL
L800
EXCELSA39V
COIL
L840
ELC10D100E
CHOKE COIL
L841
ELC10D100E
CHOKE COIL
L865
G0A220ZA0041
COIL
L866
G0A220ZA0041
COIL
L880
J0JCC0000241
INDUCTOR
L1200
J0JHC0000078
COIL
L1201
J0JHC0000078
COIL
L1202
J0JHC0000078
COIL
L1500
TALV35VB100K
COIL
L1501
G0A100GA0013
COIL TALL08T100KA
16
TX-R20LA80
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