SERVICE MANUAL
DTV2798A
S/M CODE NO. M33A14SASM
DATE OF ISSUE 07/2008
27" MTS STEREO COLOR TELEVISION
WITH DIGITAL TUNER
SUPPLEMENT
VERSION (C)
All the specifications and features are subject to change without notice.
This SUPPLEMENT must be used together with SERVICE MANUAL for DTV2798.
All other test and repair procedures are as shown in the ORIGINAL MANUAL.
Please file this SUPPLEMENT with the ORIGINAL VERSIONS.
PART NO. DESCRIPTION PART NO. DESCRIPTION
101 7A701B180A FRONT CABI ASS'Y 7A701B195A FRONT CABI ASS'Y
101A 701WPJD719 CABINET FRONT 701WPJD738 CABINET FRONT
101C 713WPA0239 GUIDE REMOCON 713WPA0218 GUIDE REMOCON
101D 735WPAA484 BUTTON,ASS'Y 735WPA0692 BUTTON,ASS'Y
101E 800WQ00103 FELT SHEET 9*250*T0.3 DELETE
101F 800WQ0A068 FELT SHEET 800WQ0A041 FELT SHEET
104 800WR0A002 SHEET CRT SUPPORT 800WR0A003 SHEET CRT SUPPORT
106 722465A473 SHEET RATING 722465A497 SHEET RATING
111 769WSAA009 WASHER CRT T=1 DELETE
201 8141H60D5U SCREW,TAP TITE(P) GW20 6*45 CH HEXAGON 8141H60D0U SCREW,TAP TITE(P) GW20 6*40 CH HEXAGON
202 811063080U SCREW TAP TITE(P) BRAZIER 3*8 CH 8110630A2U SCREW TAP TITE(P) BRAZIER 3*12 CH
--- 793WCDD810 GIFT BOX 793WCDD879 GIFT BOX
--- 792WHAA097 PACKAGE,TOP (FRONT) 792WHAA138 PACKAGE TOP (FRONT)
--- 792WHAA098 PACKAGE,TOP (BACK) 792WHA0431 PACKAGE TOP(BACK)
--- 792WHAA099 PACKAGE,BOTTOM 792WHAA137 PACKAGE BOTTOM
PART NO. DESCRIPTION PART NO. DESCRIPTION
IC2403
S33A01SF01
MEMORY DATA K8D3216UTC-PI07
S33A08SF02
MEMORY DATA K8P3215UQB-PI4B
MECHANICAL REPLACEMENT PARTS LIST
REF. NO.
DTV2798 DTV2798A
ELECTRICAL REPLACEMENT PARTS LIST
REF. NO.
DTV2798 DTV2798A
ADDRESS DATA
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
1.
2.
3.
4.
Turn on the POWER, and set to the TV mode.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (8) on the remote control for more than 2 seconds.
After the confirmation of each check sum, power on total hours, digital tv micon firware and micon version, turn off the
power.
Initial total of MEMORY IC, POWER ON total hours, MICON VERSION and Digital TV MICON Firmware VERSION can be
checked on the screen. Total hours are displayed in 16 system of notation.
NOTE:
WHEN REPLACING EEPROM (MEMORY) IC
If you set a factory initialization, the total hours is reset to "0".
Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
FIG. 1
INIT 00 40
CRT ON @@@@
OEC7180A_12
DTV CA10E86032
INIT 1F6C
ROM: 3757
MICON V ersion
Initial setting data check sum.
Rom correction data check sum.
Digital TV MICON Firmware
CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS, MICON VERSION AND
DIGITAL TV MICON FIRMWARE VERSION
Initial setting content of MEMORY IC.
NOTE:
The each item value might be different according to each set.
ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
IC2401 R8A66953FP
DTV_ASIC
6
16
28
40
51
141
157
172
212
3
13
26
37
49
137
149
160
210
65
84
101
121
59
69
78
88
95
105
114
128
57
67
76
86
93
103
112
126
18
30
45
73
117
132
146
170
208
123
99
82
63
19
46
31
74
118
133
147
171
207
122
100
83
64
195
203
196
202
198
200
197
201
B2402
FCM1608KF-151T06
B2401
FCM1608KF-151T06
IC2408 BA00HC5WF
REGULATOR IC
1234
5678
D2401
1SS355
C2442
0.1 B
C2431
0.1 B
C2424
0.1 B
C2441
0.1 B
C2439
0.1 B
C2432
0.1 B
C2427
0.1 B
C2420
0.1 B
C2443
0.1 B
C2436
0.1 B
C2401
10 C
C2403
10 C
C2425
10 C
C2413
0.1 B
C2412
0.1 B
C2426
10 C
C2402
10 C
C2499
0.1 B
C2510
0.1 B
C2507
10 C
C2508
10 C
C2513
10 C
C2512
10 C
C2511
0.1 B
C2404
0.1 B
C2406
0.1 B
C2409
0.1 B
C2414
0.1 B
C2417
0.1 B
C2407
0.1 B
C2410
0.1 B
C2415
0.1 B
C2418
0.1 B
C2421
0.1 B
C2428
0.1 B
C2433
0.1 B
C2440
0.1 B
C2422
0.1 B
C2429
0.1 B
C2434
0.1 B
C2405
0.1 B
C2408
0.1 B
C2411
0.1 B
C2416
0.1 B
C2419
0.1 B
C2423
0.1 B
C2430
0.1 B
C2435
0.1 B
C2437
0.1 B
C2444
0.1 B
C2438
0.1 B
C2445
0.1 B
R2505
3.9K
R2488
2.7K +-1%
R2489
1K +-1%
R2487
1K
R2490
10
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
VDD33
VDD25
VDD5
1V5_D VDD10
VDD25
VDD10
VDD33
VDD5
1V5_D
VDD25
D_GND
VDD10
VDD33
VDD10
D_GND
FROM AV OUT
POWER2 SCHEMATIC DIAGRAM
J-16J-15
PCBDH0
CEF284
(DIGITAL PCB)
VCCQ33
VCCQ33
VCCQ33
VCCQ33
VCCQ33
VCCQ33
VCCQ33
VCCQ33
VCCQ33
VSSQ33
VSSQ33
VSSQ33
VSSQ33
VSSQ33
VSSQ33
VSSQ33
VSSQ33
VSSQ33
VCC25P
VCC25P
VCC25P
VCC25P
VCCQ25
VCCQ25
VCCQ25
VCCQ25
VCCQ25
VCCQ25
VCCQ25
VCCQ25
VSSQ25
VSSQ25
VSSQ25
VSSQ25
VSSQ25
VSSQ25
VSSQ25
VSSQ25
VDD10
VDD10
VDD10
VDD10
VDD10
VDD10
VDD10
VDD10
VDD10
VDD10P
VDD10P
VDD10P
VDD10P
VSS10
VSS10
VSS10
VSS10
VSS10
VSS10
VSS10
VSS10
VSS10
VSS10P
VSS10P
VSS10P
VSS10P
VCCPLL33
VCCPLL33
VSSPLL33
VSSPLL33
VCCPLL10
VCCPLL10
VSSPLL10
VSSPLL10
(1/5 POWER)
V0
ADJ
VCCENGND
GND
PVCC
PVCC
0
0
1.93
1.11
0.8
3.32
3.32
1.97
ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
IC2402
HY5DU561622ETP-D43-C
256Mbit DDR SDRAM
110111213141516171819 220212223242526272829 330313233
34 35 36 37 38 39
4
40 41 42
43 44 45 46 47 48 49
5
50 51 52 53 54 55 56 57 58 59
6
60 61 62 63 64 65 66
789
NR2403 4D02WGJ0470TCE
NR2401 4D02WGJ0470TCE
NR2407 4D02WGJ0470TCE
NR2409 4D02WGJ0470TCE
NR2404 4D02WGJ0470TCE
NR2402 4D02WGJ0470TCE
NR2405 4D02WGJ0470TCE
NR2406 4D02WGJ0470TCE
NR2408 4D02WGJ0470TCE
IC2401 R8A66953FP
DTV_ASIC
55
56
58
60
61
66
68
70
71
72
75
77
87
89
90
91
79
80
81
85
98
102
104
106
92
94
96
97
107
108
113
111
115
116
119
120
124
125
127
129
130
109
110
62
C2447
0.1 B
C2446
0.1 B
C2457
0.1 B
C2459
0.1 B
C2460
0.1 B
C2458
0.1 B
C2450
0.1 B
C2451
0.1 B
C2452
0.1 B
C2453
0.1 B
C2454
0.1 B
C2455
0.1 B
C2456
0.1 B
C2461
10 C
C2462
10 C
C2463
10 C
C2464
10 C
C2449
0.1 B
C2448
0.1 B
R2402 22
R2401 47
R2403 22
R2404 47
R2405 47
R2406 47
R2407 47
R2414
100 +-1%
R2413
100 +-1%
R2415
100
+-1%
R2412
100
+-1%
R2411
100 +-1%
R2410
100 +-1%
R2409
100
+-1%
R2408
100 +-1%
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
VDD25
SDA3 SSDA3
SDA2 SSDA2
SDA1 SSDA1
SDA0 SSDA0
SDA10 SSDA10
SDBA1 SSDBA1
SDBA0 SSDBA0
SDCS SSDCS
DQ0 DQ15
SDRAS SSDRAS
DQ1 DQ14
SDCAS SSDCAS
DQ2 DQ13
SDWE SSDWE
SDDQM0 SSDDQM0 DQ3 DQ12
DQ4 DQ11
SDDQS0 SSDDQS0
SDDQ4 DQ4
DQ5 DQ10
SDDQ5 DQ5 DQ6 DQ9
SDDQ6 DQ6
DQ7 DQ8
SDDQ7 DQ7
SDDQ0 DQ0
SSDDQS0 SSDDQS1
SDDQ1 DQ1
SDDQ2 DQ2
SDVREF
SDDQ3 DQ3
SSDDQM0 SSDDQM1
SDDQ12 DQ12
SSDWE SSDCLKN
SDDQ13 DQ13
SSDCAS SSDCLK
SDDQ14 DQ14 SSDRAS SSDCKE
SSDCS
SDDQ15 DQ15
SSDA12
SDDQ8 DQ8
SSDBA0 SSDA11
SDDQ9 DQ9 SSDBA1 SSDA9
SSDA10 SSDA8
SDDQ10 DQ10
SSDA0 SSDA7
SDDQ11 DQ11
SSDA1 SSDA6
SDDQS1 SSDDQS1 SSDA2 SSDA5
SSDA3 SSDA4
SDDQM1 SSDDQM1
SDCLK SSDCLK
SDCLKN SSDCLKN
D_GND
SDCKE SSDCKE
SDA12 SSDA12
SDA11 SSDA11
SDA9 SSDA9
SDA8 SSDA8
SDA7 SSDA7
SDA6 SSDA6
SDA5 SSDA5
SDA4 SSDA4
D_GND
SDVREF
FROM AV OUT
J-18
J-17
PCBDH0
CEF284
0.6
2.5
0
2.5
2.2
2.5
2.3
2.3
0
2.0
2.3
2.5
2.3
0
0
2.2
0
1.3
0
2.7
1.8
1.8
1.5
0
2.8
2.8
2.8
2.8
2.8
3
3
2.8
02.5
2.1
2.7
2.8
2.8
2.8
2.6
2.8
0
2.4
2.5
2.5
2.4
2.8
0
2.5
0
2.2
2.7
0
2.7
0
2.7
0
2.6
2.3
2.3
0
2.3
2.4
2.6
2.3
2.5
(DIGITAL PCB)
SDA3
SDA2
SDA1
SDA0
SDA10
SDBA0
SDCS
SDRAS
SDCAS
SDWE
SDDQM0
SDDQS0
SDDQ4
SDDQ5
SDDQ6
SDDQ7
SDDQ0
SDDQ1
SDDQ2
SDDQ3
SDDQ12
SDDQ13
SDDQ14
SDDQ15
SDDQ8
SDDQ9
SDDQ10
SDDQ11
SDDQS1
SDDQM1
SDCLK
SDCLKN
SDCKE
SDA12
SDA11
SDA9
SDA8
SDA7
SDA6
SDA5
SDA4
SDVREF
VSS25R
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
SDBA1
2
4
6
8
1
3
5
7
SDRAM SCHEMATIC DIAGRAM
LDQS
UDM
VDD
DQ0
VDDQ
DQ1
DQ2
VSSQ
DQ3
DQ4
VDDQ
DQ5
DQ6
VSSQ
DQ7
VDDQ
NC
NC
VDD
LDM
WE
CAS
RAS
CS
NC
BA0
BA1
AP/A10
A0
A3
A2
A1
VDD
VSS
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
NC
NC
UDQS
VSSQ
VREF
VSS
CK
CK
CKE
NC
A11
A9
A8
A7
A6
A5
A4
VSS
A12
Place near SDRAM per VDD pin.
Bypass cap.
(2/5 MEMORY)
NCNC
NCNC
NC
NC
NC
NC
NC
NC
Closed to DDR
Closed to ASIC
7
5
3
1
8
6
4
2
1
3
5786
4
2
7
5
3
1
8
6
4
2
1
3
5786
4
2
ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
IC2403 K8D3216UTC-PI07
2Mx16 NOR FLASH Firm wrote
110111213141516171819 22021222324
25 26 27 28 29
3
30 31 32 33 34 35 36 37 38 39
4
40 41 42 43 44 45 46 47 48
56789
NR2410 4D02WGJ0220TCE
NR2411 4D02WGJ0220TCE
NR2412 4D02WGJ0220TCE
NR2413 4D02WGJ0220TCE
NR2414 4D02WGJ0220TCE
NR2415 4D02WGJ0220TCE
NR2416 4D02WGJ0220TCE
NR2417 4D02WGJ0220TCE
NR2418 4D02WGJ0220TCE
IC2401 R8A66953FP
DTV_ASIC
206
209
211
213
214
215
216
1
2
7
8
9
10
11
12
20
23
24
25
27
29
32
33
34
43
44
47
48
50
52
53
54
205
35
36
42
41
38
39
21
22
C2465 0.1 B
C2466 0.1 B
R2418 22
R2419 22
R2416 22
R2417 22
R2420 22
R2423
10K
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
D15 MD15
VDD33
WAIT_N
D7 MD7
RESET_N
D14 MD14
D6 MD6
D13 MD13
D5 MD5
D12 MD12
D4 MD4
D_GND
D11 MD11
D3 MD3
D10 MD10 AA16 AA17
AA15 VDD33
D2 MD2
AA14
D9 MD9
AA13 MD15
D1 MD1 AA12 MD7
AA11 MD14
D8 MD8
AA10 MD6
D0 MD0
AA9 MD13
AA20 MD5
AA21 MD12
WE_N MD4
RESET_N
A1 AA1 MD11
MD3
A2 AA2
WAIT_N MD10
A3 AA3
AA19 MD2
A4 AA4 AA18 MD9
AA8 MD1
A5 AA5
AA7 MD8
A6 AA6
AA6 MD0
A7 AA7
D_GND
AA5 RD_N
AA4
A8 AA8
AA3 CS0_N
A9 AA9
AA2 AA1
A10 AA10
A11 AA11
A12 AA12
A13 AA13
A14 AA14
A15 AA15
A16 AA16
A17 AA17
A18 AA18
A19 AA19
A20 AA20
A21 AA21
WAIT_N
WE_N
RD_N
CS0_N
FROM AV OUT
J-20J-19
PCBDH0
CEF284
(DIGITAL PCB)
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
A16A15
A14
VSSA13
DQ15/A1A12
DQ7A11
DQ14A10
DQ6A9
DQ13A8
DQ5A19
DQ12A20
DQ4
VCC
DQ11
DQ3
DQ10
DQ2A18
DQ9A17
DQ1A7
DQ8A6
DQ0A5
A4
VSSA3
A2
A0A1
RY/BY
WP/ACC
WE
RESET
BYTE
OE
CE
D15
D7
D14
D6
D13
D5
D12
D4
D11
D3
D10
D2
D9
D1
D8
D0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
2
4
6
8
1
3
5
7
A17
A18
A19
A20
A21(GPIO)
GPIO(WAIT_N/CS1_N)
WE_N
RD_N
CS0_N
FLASH SCHEMATIC DIAGRAM
(3/5 FLASH)
NC
Closed to Flash Memory
3.5
3.47
3.47
3.53
3.44
3.66
3.44
3.62
0
0
3.5
3.44
0NC
3.5
NC0
3.5
3.47
3.5
3.44
3.47
3.5
3.56
3.5
3.56 3.53
3.5
0
3.59
3.62
3.56
3.56
3.59
3.59
3.53
3.56
3.56
3.5
3.59
3.56
3.53
3.59
3.56
3.53
3.53
3.56
0
3.5
3.5
ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
JG2404
JG2405
IC2401 R8A66953FP
DTV_ASIC
175
177
176
191
192
194
190
185
188
183
180
181
179
173
140
199
204
138
136
193
182
186
187
184
189
142
139
178
174
W805
W806
C2481
10 C
C2479
0.1 B
C2478
0.1 B
C2475
0.1 B
C2476
0.1 B
C2471
10 C
C2474
0.001 B
C2472
10 C
C2477
0.1 B
C2480
0.1 B
C2470
0.1 B
C2509
56P CH
C2468
0.01 B
C2467
0.01 B
C2473
0.33 B
C2469
0.1 B
R2436
560 +-1%
R2437
560 +-1%
R2444
220 +-1%
R2447
120 +-1%
R2443
220 +-1%
R2446
120 +-1%
R2442
150 +-1%
R2445
120 +-1%
R2424
1K
R2439
180
+-1%
R2435
10
R2434
4.7K
R2438
4.7K
R2430
100
R2433
100
R2432
1K
R2431
1K
R2440
180
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
L2401
0.22uH
LQW18AN
IF_P
IF_N VDD33_2
AGND
VDD33_2
VDD33_2
VDD33_2
IF_AGC
D_GND
YOUT
D_GND
PBOUT
PROUT
D_GND AGND
RESET_N
FROM/TO AV OUT
FROM AV OUT
J-22J-21
PCBDH0
CEF284
(DIGITAL PCB)
ADVREF0
ADVREF1
ADVREF2
REXT2
VCCADA_A
VSSADA_A
VCCADA_B
VSSDDA_B
VSSADA_B
VCCDAD
VSSDAD
VCCAAD_A
VSSAAD_A
GPIO(IFAGC)
TEST0
RESET_N
M32TRST_N
M32TMS
COUT
ADC&DAC SCHEMATIC DIAGRAM
(4/5 ADC&DAC)
YOUT
PBOUT
PROUT
REXT1
YCVBSOUT
GPIO(RFAGC)
GPIO
ADIN1
ADIN0
VSSDDA_A
IF filter
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