DOWNLOAD Panasonic UB-T781 / UB-T781W / UB-T761 Service Manual ↓ Size: 3.11 MB | Pages: 115 in PDF or view online for FREE

Model
UB-T781 UB-T781W UB-T761
Pages
115
Size
3.11 MB
Type
PDF
Document
Service Manual
Brand
Device
Service Manual / Other / ELECTRONIC BOARD (ELITE PANABOARD)
File
ub-t781-ub-t781w-ub-t761.pdf
Date
PREV: Panasonic UB-T780BP (serv.man2) Service Manual / Supplement

Panasonic UB-T781 / UB-T781W / UB-T761 Service Manual ▷ View online

77
UB-T781/T781W/T761
100n
C371
50
100p
C367
100n
C366
100n
C380
100n
C376
100n
C374
100n
C365
100n
C377
1n
C370
100n
C381
100n
C369
16
10u
C379
10
100u
C373
10
100u
C364
10
100u
C368
10
100u
C363
16
10u
C378
2
3
B
D
A
C
5
4
+
-
IC317
3
2
1
+
-
IC317
5
6
7
IC315
NC1
1
A
2
NC2
3
REF
5
K
4
IC316
*OE_1
1
A1_1
2
Y4_2
3
A2_1
4
Y3_2
5
A3_1
6
Y2_2
7
A4_1
8
Y1_2
9
GND
10
A1_2
11
Y4_1
12
A2_2
13
Y3_1
14
A3_2
15
Y2_1
16
A4_2
17
Y1_1
18
*OE_2
19
VCC
20
IC313
A14
1
A12
2
A7
3
A6
4
A5
5
A4
6
A3
7
A2
8
A1
9
A0
10
I/O0
11
I/O1
12
I/O2
13
GND
14
I/O3 15
I/O4 16
I/O5 17
I/O6 18
I/O7 19
*CE 20
A10 21
*OE 22
A11 23
A9 24
A8 25
A13 26
*WE 27
VCC 28
IC317
GND
4
V+
8
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
+5V
+5VA
+5V
+5V
+5V
+5V
+5V
+5V
+5V
LED1
1:6C
CPUA[14-0]
1:3F;4:5B
OUT2
1:6C
*CPURD
1:6C
RTH
1:6C
OUT1
1:6C
*SRAMCS
1:6C
TXD
1:6C
LED2
1:6C
*CPULWR
1:6C
DTR
1:6C
1:6A
CTS
VREF
1:6A
TEMP
1:6A
1:6A
RXD
1:6A
IN1
CPUDB[7-0]
1:3E;4:6C
2.32k
R491
2.7k
R489
2.32k
R480
10k
R473
1k
R479
10k
R474
1k
R475
15k
R482
2.32k
R490
R476
4.7k
R483
4.7k
R478
L301
100n
C372
+5V
GND
IC314
OUT
4
CD
3
GND
1
VDD
2
GND
47
R486
+5V
*RST_IN
1:6C
47
R492
1:6A
*RESET
47
R493
4.7k
R485
+5V
4.7k
R487
4.7k
R488
4.7k
R494
4.7k
R497
+5V
4.7k
R496
4.7k
R495
*RESET
1:6C
1k
R477
L308
L309
CN305
1
OUT1
2
IN1
3
OUT2
4
GND
CN304
1
+5V
2
GND
3
RXD
4
TXD
5
CTS
6
DTR
CL435
CL436
CL437
CL438
CL439
CL440
CL441
CL442
CL443
CL444
Q305
Q304
CN303
1
+5V
2
+5V
3
+5V
4
GND
5
GND
6
GND
100n
C422
GND
10k
R554
CL451
7.5k
R481
47
R565
47
R566
47
R567
47
R568
47
R569
47
R570
47
R571
47
R572
1k
R484
47n
C375
*RST_OUT
1:6A
CN302
1
+5V
2
GND
3
LED1
4
LED2
CPUA[14]
CPUA[12]
CPUA[7]
CPUA[6]
CPUA[5]
CPUA[4]
CPUA[3]
CPUA[2]
CPUA[1]
CPUA[0]
CPUA[13]
CPUA[8]
CPUA[9]
CPUA[11]
CPUA[10]
CPUDB[0]
CPUDB[1]
CPUDB[2]
CPUDB[7]
CPUDB[6]
CPUDB[5]
CPUDB[4]
CPUDB[3]
1%
1%
1%
1%
1%
Not used
For PEN 
Not used
1
6
B
D
A
C
2
3
5
4
1
6
5/7
UB-T781/T781W/T761
Control Board
78
UB-T781/T781W/T761
1n
C383
100n
C385
1n
C382
100n
C392
1n
C393
100n
C384
100n
C390
1n
C389
16
10u
C387
2
3
B
D
A
C
5
4
1 CoreVcc1
2 GND1
3 D-
4 D+
5 Vbus
6 TrON
7 TEST
8 *Dack1
9 *Dreq1
10 *TC1
11 *INT1/*SOF
12 IOVcc1
13
Xout
14
Xin
15
GND2
16
CoreVcc2
17
A1
18
A2
19
A3
20
A4
21
A5
22
A6
23
D0
24
D1
25
D2
26
D3
27
D4
28
D5
29
D6
30
D7
31
D8/P0
32
D9/P1
33
D10/P2
34
D11/P3
35
IOVcc2
36
GND3
37
D12/P4
38
D13/P5
39
D14/P6
40
D15/A0
41
*HWR/*BYTE
42
*INT0
43
*RD
44
*L
WR
45
*CS
46
*RST
47
*Dreq0
48
*Dack0
GND
GND
GND
GND
GND
GND
+5V
+5V
+5V
+5V
+5V
+3.3V
*CPURD
1:4D
*CPUHWR
1:4D
CPUA[6-1]
1:3F;4:5B
*USBCS
1:4D
*CPULWR
1:4D
*RESET
1:4D
1:6A
USBDM2
*USBINT0
1:9C
1:6A
USBDP2
CPUDB[15-0]
1:3E;4:6C
10k
R498
0
R503
10k
R508
0
R500
1M
R506
10k
R499
10k
R507
47
R509
X301
1n
C386
GND
27
R501
27
R502
1.5k
R504
VBUS2
47
R525
47
R524
47
R523
47
R522
47
R521
47
R520
47
R519
47
R518
47
R517
47
R516
47
R515
47
R514
47
R513
47
R512
47
R511
47
R510
CL445
CL446
CL447
220
R505
22p
C388
22p
C391
100n
C423
GND
CPUA[2]
CPUA[3]
CPUA[4]
CPUA[5]
CPUA[6]
CPUDB[0]
CPUDB[1]
CPUDB[3]
CPUDB[15]
CPUDB[14]
CPUDB[13]
CPUDB[12]
CPUDB[11]
CPUDB[10]
CPUDB[9]
CPUDB[8]
CPUDB[7]
CPUDB[6]
CPUDB[5]
CPUDB[4]
CPUDB[2]
CPUA[1]
Not Used
N.C.
N.C.
NO USE
1
6
2
3
5
4
1
6
B
D
A
C
6/7
Not Used
Not Used
Not Used
IC318
UB-T781/T781W/T761
Control Board
79
UB-T781/T781W/T761
100n
C414
100n
C408
100n
C41
1
100n
C410
100n
C407
100n
C401
50
12p
C400
100n
C413
50
12p
C397
100n
C399
16
1u
C396
100n
C404
100n
C403
16
10u
C415
16
10u
C394
10
100u
C417
16
10u
C395
2
3
B
D
A
C
5
4
IC321
1 *ENA
2 FLGA
3 FLGB
4 *ENB
5
OUTB
6
GND
7
IN
8
OUTA
IC319
OUT 3
GND
2
IN
1
JK300
1
2
3
4
5
6
7
8
L305
L302
L304
L303
L306
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
FG-USBD
FG-USBH
VBUS1
+5V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+5V
VBUS1
CL303
CL304
CL305
USBDM2
1:6A
USBDP2
1:6A
33
R538
0
R532
2.43k
R541
0
R548
15k
R535
0
R533
10k
R540
510k
R544
510k
R542
0
* R547
10k
R545
0
* R546
0
R549
0
* R537
0
* R536
10k
R543
10k
R534
GND
0
R539
10
100u
C416
GND
IC322
VOUT
1
VDD
2
GND
3
CT
5
NC
4
GND
100n
C409
+3.3V
GND
6.3
4.7u
C402
6.3
4.7u
C398
6.3
4.7u
C405
100n
C406
CL448
CL449
CL450
VBUS2
LF300
1
2
4
3
LF301
1
2
4
3
JK301
1
2
3
4
L310
100n
C420
100n
C421
30M
X302
IC320
VDD25OUT
1
VSSREG
2
LED4
3
LED3
4
LED2
5
LED1
6
GREEN
7
AMBER
8
VDD33_1
9
X1
10
X2
11
VDD25_1
12
BUS_B
13
TEST
14
RREF
15
A
VSSR
16
A
VDD1
17
A
VSS
18
A
VDD2
19
VDD33_2
20
DMU
21
DPU
22
VSS1
23
VDD25_2
24
DM1
25
DP1
26
VSS2
27
DM2
28
DP2
29
VDD33_3
30
DM3
31
DP3
32
VDD25_3
33
DM4
34
DP4
35
VSS3
36
SYSRSTB
37
PPB4
38
CSB4
39
PPB3
40
CSB3
41
VSS4
42
PPB2
43
CSB2
44
PPB1
45
CSB1
46
VBUSM
47
VDD33REG
48
1.5n
C412
D+
VBUS
D-
GND
USB-B
Connector
VBUS
D-
1%
USB(H) Connector
GND
D+
N.C.
7/7
6
1
B
D
A
C
2
3
5
4
6
1
* : Not Used
*: Not Used
UB-T781/T781W/T761
Control Board
80
UB-T781/T781W/T761
11.3. Audio Board
B
D
A
C
1/2
UB-T781/T781W/T761
Audio Board
2
3
5
4
1
2
3
5
4
1
B
D
A
C
indicates that the parts circled by this mark is not mounted.
JK800
1
2
3
4
5
8
9
6
7
1.5k
R832
27
R833
27
R834
10M
R831
1u
C809
10
R835
1u
C810
1u
C813
1u
C816
1u
C818
10k
R840
10k
R841
16
R839
16
R842
1.5k
R836
1.5k
R837
1M
R838
1M
R843
VDD
10u
L800
IC801
XTO
1
CK
2
TEST0
26
*SSPND
27
DT
3
XTI
28
PSEL
4
TEST1
25
DOUT
5
HID2/MD
24
DGND
6
HID1/MC
23
VDD
7
HID0/MS
22
D-
8
HOST
21
D+
9
VCCP
20
VBUS
10
PGND
19
ZGND
11
VCOM
18
AGNDL
12
AGNDR
17
VCCL
13
VCCR
16
VOUTL
14
VOUTR
15
0.022u
C814
VDD
18p
C81
1
18p
C812
12000KHZ
X800
0.022u
C815
10u
C817
R846
1.5k
R847
R848
1.5k
R844
1.5k
R845
VDD
R810
R811
3300p
C870
100k
R865
+
-
IC803
3
2
1
7.5k
R982
1k
R862
51k
R970
2200p
C984
1u
C861
Q833
6.2k
R873
2200p
C873
1.2k
R986
IC803
VCC-
4
VCC+
8
Q864
8.2k
R877
1u
C962
Q861
68k
R993
C878
8.2k
R977
1u
C961
1u
C967
Q862
0.022u
C972
91k
R883
51k
R989
1.2k
R980
Q863
JK801
2
3
1
5600p
C880
10k
VR800
2
4
3
5
1
6
7
Q834
IC804
GND
4
VDD
8
160
R860
4.7k
R869
160
R960
1.2k
R974
1u
C862
0.1u
C888
10u
C885
51k
R972
0.22u
C871
Q835
0.033u
C966
100k
R866
68k
R867
2200p
C974
2200p
C877
C978
+
-
IC803
5
6
7
1.2k
R874
0.1u
C988
68k
R875
1u
C886
47p
C882
1u
C867
7.5k
R882
1.2k
R886
6800p
C983
0
R878
51k
R870
0.018u
C976
51k
R971
47k
R895
5p
C889
51k
R963
51k
R863
100k
R966
51k
R988
1u
C986
+
-
IC804
3
2
1
51k
R872
68k
R887
6.2k
R979
0.01u
C979
68k
R975
68k
R987
4.7k
R894
0.022u
C872
68k
R981
5p
C963
470p
C981
3300p
C970
Q832
2200p
C884
2200p
C977
6.2k
R885
+
-
IC804
5
6
7
6800p
C883
51k
R961
1u
C868
Q831
0.22u
C971
5p
C989
68k
R881
1u
C968
100k
R976
91k
R983
68k
R967
22u
C860
51k
R990
1.2k
R992
Q865
10u
C985
0
R884
68k
R893
0.018u
C876
51k
R964
47k
R995
6.2k
R985
100k
R876
6.2k
R879
0
R984
6.2k
R968
5p
C863
470p
C881
6.2k
R973
51k
R861
5600p
C980
47p
C982
4.7k
R994
1k
R962
100k
R965
6.2k
R868
0.033u
C866
51k
R864
1.2k
R880
51k
R871
0.01u
C879
2200p
C874
2200p
C973
6.2k
R991
22u
C960
0
R978
4.7k
R969
10u
C891
10u
C893
0.1u
C892
0.1u
C894
1u
C803
D800
IC800
OUT
2
GND
3
IN
1
0.1u
C804
16V
10u
C805
/
1u
C806
10u
C807
12k
R813
22k
R814
5.1k
R812
Q800
CN800
1
2
3
4
25V
470u
C800
/
0.1u
C801
1000p
C802
D817
100k
R948
100k
R949
4.7k
R950
10k
R951
10u
C836
Q813
Q814
IC805
OUT
2
GND
3
IN
1
1u
C830
4.7u
C831
D810
1k
R952
EQUALIZER_OUT_L
[2:3B]
EQUALIZER_OUT_R
[2:3B]
SSPND# [2:1D]
VR [2:2B]
Vcom
Vcom
Vcom
Vcom
Vcom
Vcom
Vcom
0.01u
C969
VCC9
VCC12
VCC12
VCC3.3V
D818
VCC9
0.056u
C975
0.056u
C875
VCC9
VCC9
VCC9
VCC9
VCC9
R888
R889
R890
R891
R892
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
TP1
SSPND#
TP2
VDD
TP7
VBUS
TP5
VCC9
TP6
Vcom
TP8
VCC12
C869
0.01u
TP10
GND
TP11
GND
TP12
GND
TP13
GND
10k
R849
VDD
VCC12
10u
C987
10u
C887
USB-IN
AUX-IN
12V-IN
to BISS
to BISS
to BISS
to BISS
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