Strong SRT4355 User manual

Service Manual
(SRT4355)

Contents
1. Technical specifications
2.Block Diagram
3. Circuit Drawing
4. List of Error codes
5Trouble Shooting
3.1 Trouble shooting
3.2 Check point about badness STB
6. Materials list
6.1 Main PCB materials list
6.2 Front PCB materials list
7. Software download instructions(OTA and PC download)
7.1 Program Download
7.2 System Upgrade
8. Specification of required cables for software download
9. Data Sheet

1.Technical specifications
1.1. Conditional Access Interface
PCMCIA 2. Slot(type I or type II)
DVB Common Interface Standard
(Viaccess, Nagra Vision, Conax, Cryptoworks, Irdeto, ASTON)
1.2. Tuner & Channel
<Digital Part>
Input Connector F-type, IEC169-24, Female
Frequency Range 950MHz to 2150MHz
Input Impedance 75ohm unbalanced
Signal Level -25 to –65dBm
IF Bandwidth 55MHz
LNB Power Vertical: +13V Horizontal: +18V Current: Max, 400mA
Polarization 13V/18V or Skew Control
22kHz Tone Frequency: 22±4kHz Amplitude: 0.6±0.2V
DiSEqC control Version (1.0 & 1.2) Compatible
Demodulation QPSK
Input Symbol Rate 2-45 Ms/s
FEC Decoder Convolution Code Rate 1/2, 2/3, 3/4, 5/6, and 7/8
With Constraint Length K=7
1.3. System & Memory
Main Processor L64108(LSI-LOGIC)
Flash Memort 1Mbyte
Program Dram 2Mbyte
EEPROM 8kbyte
Channel Memory
(Total : 3500) Digital Channel: 3000 Analog Channel: 500
Multi-Satellite UP to 64
Multi-Language Menu English/Spanish/French/Italian/German/Portuguese
Front 7 keys, 4-digit 7–segment display
Remote Controller 30-31 keys, IR Remote Control

1.4. MPEG Transport Stream & A/V Decoding
<Digital Part>
Transport Stream MPEG-2 ISO/IEC 13818 Transport Stream Specification
Profile Level MPEG-2 MP@ML
Input Rate Max. 40Mbit/s
Aspect Ratio 4:3, 16:9
Frame Rate 25Hz for PAL, 30Hz for NTSC
Video Resolution 720x576(PAL),720x480(NTSC)
Teletext Through VBI
Audio Decoding MPEG/MusiCam Layer I & II
Audio Mode Single channel/Dual channel joint stereo/Stereo
Frequency Response 20~20kHz, <+/-2dB
60Hz~18kHz <+/-0.5dB
Sampling Rate 32, 44.1, 48kHz
1.5. A/V & Date In/Out
TV Scart Output RGB, CVBS, L, R Output with Volume control
VCR Scart In/Out CVBS, L, R In
CVBS, L, R Out
RCA Output CVBS, L, R Output(Yellow, White, Red Hack) with Volume Control
0V/12V Output RCA Jack Output(Black Jack), Max. 150mA
Data Interface RS-232, Bit Rate: 115200baud
Connector: 9-pin D-sub type
1.6. RF-Modulator
RF-Connector 75w IEC169-2, Male/Female
Frequency 470MHz to 860MHz
Output Channel CH 21-69 for the Demodulator
TV Standard PAL B/G/I/D/K Selectable by Menu Setting
Audio Output Mono with Volume Control
Preset Channel CH 40 (or TBD). Soft ware changeable by Menu screen

1.7. Power Supply
Input Voltage AC90 to 260V, 50Hz/60Hz
Type PWM Regulator
Power Consumption Max. 40W(without Positioner)
Stand-by Power <= 10W
Protection Separate Internal Fuse
The input shall have the lighting protection
1.8. Physical Specification
Size (WxHxD) 280x55x235mm
Excluding the foot. Foot height is 10mm.
Weight 2.0Kg
1.9. Environmental Condition
Operating Temperature 0~40C
Storage Temperature -10C~+50C
Operating Humidity Range 10~85% RH, Non-condensing
Storage Humidity Range 5~90% RH, Non-condensing

2.Block Diagram
MPEG2 Transport with Embeded
MIPS CPU
(L64108)
DRAM 2MByte
(KM416V1204)
Flash ROM
1MByte
(SST39VF800Q)
EDATA
[0..15] EADDR [1..20] BD[0..15] BA[0..9]
VCXO
(27MHz)
EEPROM
(AT24C64)
SCL,
SDA
Audio/Video
Decoder
(L64005)
SDRAM 2MByte
(KM416S1020)
SBD[0..15] SBA[0..8]
AVD[0..7]
AREQ,AVALID
,VREQ,VVALID
Video
Encoder
(BT864)
YCRCB[0..7]
VSYNC,HSYNC
TTXDATA, TTXREQ
Audio/Video
Switch
(CXA2126)
CVBS
RED,
GREEN,
BLUE
TV SCART
VIDEO SCART
RCA JACK
Audio
DAC
(AK4323)
LRCLK,BICK,
PCMDATA,
005_ACLK L_AUDIO,
R_AUDIO
RS-232
(DS232AS)
TXD,RXD
8-bit
microcontroller
(AT89C51)
Front Panel
I2C(SDL,SCA)
BD[0..7]
QPSK NIM
(TBMU30311)
Common
Interface
74244
74244
74244
74244
74244
TS_VALID,
TS_CLK,
TS[0..7]
CH_VALID,
CH_CLK,
CH_STRT,
PTO[0..7]
SCL,SDA
SMPS
RF Modulator
(RMUP74055)
LEFT_A,
RIGHT_A
RF_Audio,
RF_Video
Block Diagram

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
54MHz
400mil 42SOJ 240p PQFP
CLOSE TO CHIP
SOIC
VDD: 2,22,35,38,46,62,92,98,116,121,135,
154,162,180,182,196,214,232
GND:1,21,34,37,45,61,77,78,91,97,115,120,
134,153,161,179,181,190,191,195,213,231
L64108
의
VDD
와
GND
for intel rom
SRT4355 1.1
L64108
Custom
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
BA[9..0]
BA9
BA8
BA7
BA6
BA5
BA4
BA3
BA2
BA1
BA0
BA0
BA9
BA8
BA7
BA6
BA5
BA4
BA3
BA2
BA1
BD15
BD14
BD13
BD12
BD11
BD10
BD9
BD8
BD7
BD6
BD5
BD4
BD3
BD2
BD1
BD0
EDATA7
EDATA6
EDATA5
EDATA4
EDATA3
EDATA2
EDATA1
EDATA0
EDATA15
EDATA14
EDATA15
EDATA14
EDATA13
EDATA12
EDATA11
EDATA10
EDATA9
EDATA8
CS_008N
EADDR13
EDATA7
EADDR10
EDATA3
EDATA10
EDATA5 EADDR6
EADDR15
EADDR12
EADDR7
EADDR9
EDATA6
EDATA2
EDATA9
EDATA8
EADDR5
EADDR14
EDATA4
EADDR19
EADDR18
EADDR11
CS0n
EADDR8
EADDR17
EDATA13
EDATA12
EDATA1
EADDR4
EADDR16
EADDR20
EDATA11
INTN4
EDATA0
EDATA[0..15] EADDR0
EADDR3
EADDR1
EADDR2
EADDR17
EADDR2
EADDR3
EADDR15
EADDR6
EADDR0
EADDR13
EADDR8
EADDR14
EADDR[0..17]
EADDR1
EADDR16
EADDR4
EADDR9
EADDR11
EADDR5
EADDR12
EADDR10
EADDR7
3.3V
3.3V
3.3V
3.3V
3.3V
5V
3.3VS
3.3V
3.3V
3.3V
3.3V
5V
3.3V
ROM_VPP
ROM_VPP
3.3V 3.3V
3.3V
3.3V 5V
5V
R16
1K
R18
10
R17 4.7K
U3
KM416V1204CJ-6
A8
27
A7
26
A6
25
A5
24
A4
23
A3
20
A2
19
A1
18
A0
17
I/O16 41
I/O15 40
I/O14 39
I/O13 38
I/O12 36
I/O11 35
I/O10 34
I/O09 33
I/O08 10
I/O07 9
I/O06 8
I/O05 7
I/O04 5
I/O03 4
I/O02 3
I/O01 2
RAS
14 LCAS
31
UCAS
30 W
13 OE
29
NC
15
NC 11
NC 12
VCC
1VCC
6VCC
21
VSS 22
VSS 37
VSS 42
NC
16
A9
28
C8
22p
C9
104
C62
104
C63
104
C7
152p
R23
1K
R12
16.9K 1%
C6
104
R19 4.7K
R20 4.7K
R13 4.7K
R14
3.3K
R15
3.3K
C61
104
U4
AT24C64N-10SC-2.7
E0 1
E1 2
E2 3
SCL
6
WC
7
SDA
5VCC 8
GND 4
R22 0
R21 0
RA1 1K
1 8
2 7
3 6
4 5
RA3 4.7K
18 27 36 45
T1
R25 NC
R24 0
E2
10/10
+
C67
104 C64 104
C65
104
C66
104
C70
104 C69 104 C68 104
C71
104
C50
0.1
L1
10uH
RA2
10K
1 8 2 7 3 6 4 5
R55
0
U2
Am29F800BT-120EC or,SST39VF800A-90-4C-EK
TSOP48
ADDR17 17
ADDR7 18
ADDR0 25
ADDR1 24
ADDR2 23
ADDR3 22
ADDR4 21
ADDR5 20
ADDR6 19
WE 11
ADDR8 8
ADDR9 7
ADDR10 6
ADDR11 5
ADDR12 4
ADDR13 3
ADDR14 2
ADDR15 1
ADDR16 48
CE 26
DATA1
31
OE 28
BYTE 47
RESET 12
DATA0
29
VCC
37
DATA2
33 DATA3
35 DATA4
38 DATA5
40 DATA6
42 DATA7
44 DATA8
30 DATA9
32 DATA10
34 DATA11
36 DATA12
39 DATA13
41 DATA14
43 DATA15
45
RY/BY
15
GND
46 GND
27
ADDR18 16
ADDR19 9 WP
14 Vpp
13
R54
nc(0 ohm)
R56
nc (10K)
R59
NC(10k)
C2
51pF
C1
105
C12
103
R5
6.2K(F)
C11
0.01uF
U6
74LCX04M
I1
1
O1
2
I2
3
O2
4
I3
5
O3
6
GND
7O4 8
I4 9
O5 10
I5 11
O6 12
I6 13
VCC 14
R4
33
R3
33
R2
620
C3
(NC)15pF
U39
VCXO 27MHZ(DIP)
VCOOUT
1
OUT
8VDD 14
GND 7
E1
10/10
+
C72
104
RA23 4.7K
18 27 36 45
RA24
10K
18 27 36 45
U1
L64108C
TRST 27
ACLK 147
TDI 23
AREQ 60
TDO 24
ACK/AUXV 171
TMS 25
AVALID 58
TCK 26
AUTOFD 158
AVD0 47
AVD1 48
AVD2 49
AVD3 50
AVD4 51
AVD5 52
AVD6 53
AVD7 54
TTXREQ 230
STROBE 157
SC0_C8 70
BUSY 172
INIT 159
TTXDATA 229
SELECTIN 160
SC0_C4 69
AVERR 56
SCL 155
VREQ 59
SC_RST0 64
VVALID 57
SELECT 174
PERROR 173
AVDD 236
SDA 156
AVSS 235
SC_VPP_EN0 63
IREF 234
FAULT 175
SCLK 7
PDATA0 163
PDATA1 164
PDATA2 165
PDATA3 166
PDATA4 167
PDATA5 168
PDATA6 169
PDATA7 170
OP_MODE2/PDATA_DIR 6
SC_VCC_EN0 68
SDET 8
SC0-I/O 67
PLLVDD 237
SC_DETECT0 65
LP2 239
SC_CLK0 66
PLLAGND 238
SC_RST1 72
PLLVSS 240
SC_VPP_EN1 71
ECLK 36
SC_VCC_EN1 76
IDDTN 3
SC1-I/O 75
ZTEST 233
SC_DETECT1 73
SC_CLK1 74
CCLK 11
CERR 10
GPIO40 39
CVALID 9
CDATA0 12
CDATA1 13
CDATA2 14
CDATA3 15
CDATA4 16
CDATA5 17
CDATA6 18
CDATA7 19
GPIO41 40
GPIO42 41
GPIO43 42
GPIO44 43
GPIO45 44
GPIO46 30
GPIO47 31
GPIO48 32
GPIO49 33
BA0
210 BA1
211 BA2
212 BA3
215 BA4
216 BA5
217 BA6
218 BA7
219 BA8
220 BA9/RAS1
221 RAS0
225
CAS1H
222
CTS1
187
CAS0H
226
BRQ
137
WE1
224
CAS1L
223
WE0
228
CTS0
188
CAS0L
227
DATA15
126
RTS1
178
BGA
138
RTS0
183
RESET
145
DTR0
184
BG
146
DSR0
189
DATA0
107
RXD0
185 RXD1
186 RXD2
29
DMRQ
148
DATA1
108
BD0
192 BD1
193 BD2
194 BD3
197 BD4
198 BD5
199 BD6
200 BD7
201 BD8
202 BD9
203 BD10
204 BD11
205 BD12
206 BD13
207 BD14
208 BD15
209
DMAK
144
TXD0
176 TXD1
177 TXD2
28
DATA2
109
CS0
149 CS1
150 CS2
151 CS3
152
DATA3
110 DATA4
111 DATA5
112 DATA6
113
INTR0
139 INTR1
140 INTR2
141 INTR3
142 INTR4
143
DATA7
114 DATA8
117 DATA9
118 DATA10
119 DATA11
122
MCLK
20
DATA12
123
OP_MODE0
4OP_MODE1
5
DATA13
124 DATA14
125
AS
127
DS
128
WR
129
SIZE1
131
SIZE0
130 OE
55
DSACK1
133
DSACK0
132
ADDR0
79 ADDR1
80 ADDR2
81 ADDR3
82 ADDR4
83 ADDR5
84 ADDR6
85 ADDR7
86 ADDR8
87 ADDR9
88 ADDR10
89 ADDR11
90 ADDR12
93 ADDR13
94 ADDR14
95 ADDR15
96 ADDR16
99 ADDR17
100 ADDR18
101 ADDR19
102 ADDR20
103 ADDR21
104 ADDR22
105 ADDR23
106
CS_008
136
Q11
KTA1273
R8
1K
R9
1K
C10
102
C60
104
Q10
DTC114
R10 NC
RA4
10K
18 27 36 45
U5
DS1811
1 2 3
D3
NC (RLS4148)
TS_CLK
TS_VALID
TS7
TTXDATA
TTXREQ
SCL
SDA
AVALID
R/WN
TXD1
TXD2
RXD1
RXD2
VVALID
AREQN
VREQN
ERRORN
CH_ERROR
V_RSTN
RESETN
CH_RST
CS_005N
AVD0
AVD1
AVD2
AVD3
AVD4
AVD5
AVD6
AVD7
INTN2
TS6
TS5
TS4
TS3
TS2
TS1
TS0
DSSCK1N
INTN1
FS0
FS1
EADDR3
EADDR1
EADDR2
DSACK0N
SDA
SCL
PWMOUT0
27MHz
LNBP_OFF
22ON/OFF
POLARITY
EADDR0
EDATA[0..15]
EADDR[0..17]
CASCS
CASEN
ROM_WP
ROM_WP
PWMOUT0
27MHZ
SYSCLK
D_RSTN
M_FLASH_CTL

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
160p PQFP
50p TSOP(II)
CLOSE TO CHIP
GND SURFACE
와
1 mm LINE
으로
10 mm
이상 떨어져서 연결
CLK
은 다른
SIGNAL
과 인접해서 그리지 말 것
.
SRT4355 1.1
L64005
Custom
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
XDA0
XDA1
XDA2
XDA3
XDA4
XDA5
XDA6
XDA7
SBD9
SBD10
SBD11
SBD12
SBD13
SBD14
SBD15
SBD0
SBD1
SBD2
SBD3
SBD4
SBD5
SBD6
SBD7
SBD8
XDA8
XDD0
SWEN
SBA10
CSKE
SBA9
SCSN
SCASN
XDD1
SBA11
SRASN
3.3V
3.3V
3.3v
3.3V
3.3V
R31
200
R30
18
R29
18
R32
4.7K
L2
10uH
C16
102
C15
20pF
C83 104
C82 104
C13
102
R27
4.7K
R28 150
C74
104
U8
KM416S1020BT-G/F10
A0 21
A1 22
A2 23
A3 24
A4 27
A5 28
A6 29
A7 30
A8 31
A9 32
A10 20
A11 19
DQ0
2
DQ1
3
DQ2
5
DQ3
6
DQ4
8
DQ5
9
DQ6
11
DQ7
12
DQ8
39
DQ9
40
DQ10
42
DQ11
43
DQ12
45
DQ13
46
DQ14
48
DQ15
49 CLK 35
CS 18
RAS 17
CAS 16
WE 15
CKE 34
LDQM 14
UDQM 36
VDD 1
VDD 25
VSS
26
VSS
50
VDDQ 7
VDDQ 13
VSSQ
4
VSSQ
10
VDDQ 38
VDDQ 44
VSSQ
41
VSSQ
47
NC
33
NC
37
C14
104
C80
104
C78
104 C79 104
C76
104 C77 104
C75
104 C81 104
U7
L64005
NC 158
NC 43
NC 157
NC 44
NC 156
NC 45
NC 155
NC 48
NC 151
NC 49
NC 150
NC 50
NC 149
NC 19
NC 148
VDD
62
NC 147
NC 18
NC 146
VDD
152
NC 145
NC 17
NC 142
VDD
46
NC 141
NC 16
NC 140
NC 139
NC 15
NC 138
LRCLK
1
NC 14
NC 13
GND
12
NC 10
VDD
112
NC 9
BCLK
2
NC 8
NC 7
GND
39
NC 6
GND
28
NC 5
SBD0 38
SBD1 37
SBD2 36
SBD3 35
SBD4 34
SBD5 33
VDD
20
SBD6 32
SBD7 31
SBD8 30
SBD9 29
SBD10 26
SBD11 25
SBD12 24
SBD13 23
SBD14 22
SBD15 21
NC 4
NC 3
ASDATA
41 ACLK
42
VDD
27
GND
47
GND
51
SBA11 52
SBA10 53
SBA9 54
SCS 55
SWE 56
SCAS 57
SRAS 58
SCKE 59
SDQM 60
SCLK 61
VDD
11
GND
63
NC 64
NC 65
NC 66
NC 67
AVDD
68
LP2
69
AGND
70
SBA8 71
VDD
72
SBA7 73
SBA6 74
SBA5 75
SBA4 76
SBA3 77
SBA2 78
AREQ
79
AVALID
80
NC 81
SCLKI
82
SBA1 83
SBA0 84
GND
85
VDD
86
SYSCLK
87
PD0
88
PD1
89
PD2
90
PD3
91
PD4
92
PD5
93
PD6
94
PD7
95
HS
96
VS
97
GND
98
GND
99 NC 100
GND
101
RESET
102
D0
103
D1
104
D2
105
D3
106
D4
107
D5
108
D6
109
D7
110
VREQ
111
VDD
40
GND
113
SERI
114
GND
117 RSVD 116
GND
115
BLANK
118
NC 119
RSVD 120
AS
121
GND
122
CREF
123
ERROR
124
A0
125
A1
126
A2
127
NC 128
VDD
129
TESTCLK 130
BYPASS
131
CS
132
READ
133
WAIT
134
GND
136
VVALID
135
INTR
137
VDD
143
VDD
160
OSD
159
GND
153 GND
144 RSVD 154
RA5 100
1 8
2 7
3 6
4 5
RA6
100
1 8
2 7
3 6
4 5
RA7
100
1 8
2 7
3 6
4 5
E3
10/10
+
AVD0
AVD1
AVD2
AVD3
AVD4
AVD5
AVD6
AVD7
AVALID
EADDR1
EADDR2
EADDR3
CS_005N
INTN2
D_RSTN
VREQN
AREQN
R/WN
27MHz
005_ACLK
VVALID
ERRORN
DSACK0N
YCRCB0
YCRCB1
YCRCB2
YCRCB3
YCRCB4
YCRCB5
YCRCB6
YCRCB7
HSYNCN
VSYNCN
BLANKN
LRCLK
BICK
PCMDATA

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
SRT4355 1.1
RS232C
A
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
RXD
TXD
5V
U9
SP232ECN
C1+
1
C1-
3
C2+ 4
C2- 5
TIN1
11
TIN2
10
RO1
12
RO2
9
VO+ 2
VO- 6
TO1 14
TO2 7
RI1 13
RI2 8
VCC 16
GND
15
C19
104
C20
104
C17
104
C18
104
C84
104 E4
10uF/16
+
BD1
FCM2012C-101
BD2
FCM2012C-101
C21
102 C22
102
J4
3302-09S-AFS-0
1
2
3
4
5
6
7
8
9
TXD1
RXD1

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
SRT4355 1.1
MICOM
B
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
GND
S5V
S5V
S5V
S5V
S5V
S5V
S5V RA8
4.7K
18 27 36 45
RA9
10K
1 8 2 7 3 6 4 5
R36
10K
D1
RLS4148
X2
11.0592MHz C24
18pF
E5
10/16
+
C85
104
RA19
4.7K
18 27 36 45
C23
18pF
E6
10/16
+
J1
CON14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
U10
AT89C51-12JI (PLCC)
P1.0 2
P1.1 3
P1.2 4
P1.3 5
P1.4 6
P1.5 7
P1.6 8
P1.7 9
X2
20
X1
21
INT0(P3.2) 14
RESET 10
EA 35
VCC 44
P0.0
43
P0.1
42
P0.2
41
P0.3
40
P0.4
39
P0.5
38
P0.6
37
P0.7
36
P2.0 24
P2.1
25
P2.2
26
P2.3
27
P2.4
28
P2.5 29
P2.6 30
P2.7
31
/RD(P3.7)
19
/WR(P3.6)
18
TXD(P3.1)
13
RXD(P3.0)
11
GND
22
R33
4.7K R34
4.7K
RA20
4.7K
18 27 36 45
Q9
DTC114
R35
1K
RXD2
PWR_CTL
INTN1
RESETN
HW_MUTE
S_SCL
12V_ON/OFF
S_SDA
TXD2
8051_LNBP_OFF
LNB_DOWN
PCMCIA_A
PCMCIA_B
LOOP_CNTL
M_FLASH_CTL

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
52pin PQFP
SRT4355 1.1
VIDEO ENCODER
B
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
BT864P5
BT864P3
BT864P2
BT864P1
3.3V
C32 22pF
C35 22pF
C38 22pF
R47
75 1%
C41 22pF
C42
330pF
C40
270pF
L3
10uH
R38 0
E7
47/10
+
C27
104
C89
104
C88
104
C87
104
C86
104
C34
270pF
L5
1.8uH(TDK:NL252018T-1R8J)
C39
330pF
R39
75 1%
C36
330pF
R46
75 1%
L6
1.8uH(TDK:NL252018T-1R8J)
C37
270pF
C28
104
R41
75 1%
C30
104
C31
270pF
C33
330pF
L7
1.8uH(TDK:NL252018T-1R8J)
L4
1.8uH(TDK:NL252018T-1R8J)
C29
104
R45
75 1%
R43
75 1%
R42
75 1%
R40
75 1%
U11
BT864AKPF
BT864AKPFBT864AKPF
BT864AKPF
FS_ADJUST 1
VBIAS 2
VREF 3
VAA 4
COMP 5
AGND 6
AGND 7
CVBS/B 8
AGND 9
CVBS/G 10
AGND 11
C/R 12
Y/CVBS 13
RGBOUT 14
FIELD 15
Y0 16 Y1 17 Y2 18 Y3 19 Y4 20 Y5 21
GND 22
VDD 23
Y6 24 Y7 25
ALTADDR 26
TTXDAT
27
P0
28
P1
29
P2
30
P3
31
P4
32
P5
33
P6
34
P7
35
GND
36
VDD
37
TTXREQ
38
SLEEP
39
SDA
40
SCL
41
SLAVE
42
CLK
43
VDD3V
44
GND
45
VDD
46
RESET
47
BLANK
48
VSYNC
49
HSYNC
50
AGND
51
AGND
52
R44
75 1%
R37 0
CVBS
RED
GREEN
BLUE
TTXREQ
V_RSTN
SYSCLK
SCL
TTXDATA
SDA
YCRCB0
YCRCB1
YCRCB2
YCRCB3
YCRCB4
YCRCB5
YCRCB6
YCRCB7
BLANKn
VSYNCn
HSYNCn

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
SRT4355 1.1
POWER
B
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
5VA
VT
T8V
5V
3.3V
24V
S5V
S12V
3.3VS
R6
3.3K(2012)
R51
3.3K
R58
1.2K
R50
4.7K
BD3
FCB3225N-310T08
R1
4.7K(2012)
BD4
FCB3225N-310T08
Q6
KSB772-Y
BD6
HCB3216K-310T30
BD7
FCB3225N-310T08
BD5
FCB3225N-310T08
BD24
HCB3216K-310T30
R57
4.7K
BD9
HCB3216K-310T30
Q8
IRFZ34
R52
1.2K (2012)
Q1
KSB772-Y
Q2
KSB772-Y
C44
104
C90
104
C135
104
C94
104
R60
4.7K(2012)
Q4
DTC114
R49
4.7k (2012)
E10
470uF/10V
+
C47
104
C91
104
E17
4.7uF/50V
+
Q7
DTC114
R53
1.2K(2012)
Q5
DTC114
C93
104
C125
104
Q3
IRFZ34
J2
5267-11
1
2
3
4
5
6
7
8
9
10
11
C45
104
R61
200 (2012) ONLY IT512
E16
47uF/16V
+
R7
NC (4.7k 2012)
C92
104
E9
47uF/50V
+
E12
4.7uF/50V
+
E8
47uF/50V
+
E57
100uF/16V
+
C99
104
C46
104
E11
100uF/16V
+
PWR_CTL

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
SRT4355 1.1
AUDIO DAC
B
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
LRCLK
BICK
PCMDATA
SYSCLK
005_ACLK
5VA
5V
E13
10/16
+
C95
104
C96
104
E14
10/16
+
C98
104
C97
104
E15
10/16
+
U13
AK4323VF
LRCK
4
BICK
5
SDATA
6
CKS
14
FSH
11
FS0
12
FS1
13
AOUTL 18
AOUTR 16
AVSS 22
AVDD 21 DVDD
2
DVSS
3
VREFH 20
DIF0
24
DIF1
1
VREFL 19
TST1 8
TST2 15
VCOM 17
27M
9
MCLKO
10
DEM
23
RST
7
FS0
FS1
LRCLK
BICK
PCMDATA
SYSCLK
V_RSTN
L_AUDIO
R_AUDIO
005_ACLK

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
VCR SCART
TV SCART

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
USE DIP SOCKET
13
개
IC
에 하나씩 배치
SRT4355 1.1
COMON INTERFACE
Custom
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
EADDR14
EADDR13
EADDR12
EADDR11
EADDR10
EADDR9
EADDR8
PCADI7
PCADI6
PCADI5
PCADI4
PCADI3
PCADI2
PCADI1 PCADI1
PCADI2
PCADI3
PCADI4
PCADI5
PCADI6
PCADI7
PCAAI14
PCAAI13
PCAAI12
PCAAI8
PCAAI11
PCAAI10
PCAAI9
PCAAI14
PCAAI13
PCAAI12
PCAAI11
PCAAI10
PCAAI9
PCAAI8
PCAAI11
PCAAI10
PCAAI8
PCAAI9
PCAAI14
PCAAI12
PCAAI13
PCADI1
PCADI2
PCADI3
PCADI4
PCADI5
PCADI6
PCADI7
EADDR13 EADDR14 EADDR15 EADDR16
PE1
PD1
PD5
PCAAI2
PCAAI7
PCAAI4 PD4
TSQ5
PD6
PCAAI6
PCAAI3 PE6
PTO3
PCAAI0
EADDR6
TSQ0
PCAAI7
PTO5
TSQ4
PCAAI6 PD5
PD0
PE5
PTO4
PE0
PCAAI2
PTO2
PTO3
TSQ3
PCAAI4
EADDR2
PD4
TSQ_VALID
PTO1
PE3
PCAAI7
TSQ_CLK
PE4
TSQ2
TSQ1
PE5
PE2
PCAAI5
PD3
TSQ_CLK
PE3
PTO1
PTO2
PE1
TSQ5
PTO1
PD7
PD0
TSQ0
PE4
PCAAI3
EADDR4
PD2
PE2
PD6
PTO0
PTO6
EADDR1
EADDR5
TSQ4
PTO7
PTO7
PTO7
PCAAI1
EADDR6 EADDR7
PE0
PD7
PTO6
PTO0
PTO4
PCAAI1
PCAAI0
PCAAI0
PE7 TSQ6
TSQ_VALID
PCAAI5
PCAAI2
PTO5
PTO6
EADDR5 EADDR3
TSQ7
TSQ7
TSQ3
PTO5
PCAAI3
EADDR4 EADDR1 EADDR2
PTO4
PCAAI4
PTO0
EADDR0
EADDR7
PTO3
PCAAI5 PD3
PE7
PCAAI1
EADDR3
TSQ6
TSQ2
PTO2
PCAAI6
PD2
PE6
EADDR0
TSQ1PD1
EADDR17
TSQ_VALID
TSQ_CLK
PTO1
PTO7
PTO6
PTO0
PTO5
PTO4
PTO3
PTO2
TSQ0
TSQ5
TSQ4
TSQ7
TSQ3
TSQ6
TSQ2
TSQ1
TSQ0
TSQ5
TSQ4
TSQ7
TSQ3
TSQ6
TSQ2
TSQ1
TS7
TS0
TS2
TS5
TS6
TS1
TS3
TS4
CENB
IOWRN
WEN
RESETQA
RESETQB
EN_THRU_Q
RD_STATN
REGN
CENA
IORDN
OEN
EN_PCMCIA_Q0
EN_PCMCIA_Q1
EN_DATA
PCADI0
PCADI0 PCADI0
EADDR15
EADDR14
EADDR16
EADDR[0..17]
EADDR6
EADDR11
EADDR10
EADDR9
EADDR8
EADDR7
EADDR9
EADDR12
EADDR13
EADDR12
EADDR5
EADDR10 EADDR11
EADDR17
EADDR4
EADDR8
5V
5V
5V
TTL_VCC
5V
5V
S5V
5V
3.3V
5V
5V
TTL_VCC
TTL_VCC
TTL_VCC
TTL_VCC
TTL_VCC
3.3V
TTL_VCC
TTL_VCC
TTL_VCC
TTL_VCC
TTL_VCC
TTL_VCC
TTL_VCC
5V
5V
5V
5V
P201
PCMCIA SOCKET MODULE B
D0
30 D1
31 D2
32 D3
2D4
3D5
4D6
5D7
6
MDO0 64
MDO1 65
MDO2 66
MDO3 37
MDO4 38
MDO5 39
MDO6 40
MDO7 41
A0
29 A1
28 A2
27 A4
25
A3
26 A5
24 A6
23 A7
22
A8
12 A9
11 A10
8A11
10 A12
21 A13
13 A14
14
MDI0 47
MDI1 48
MDI2 49
MDI3 50
MDI4 53
MDI5 54
MDI6 55
MDI7 56
GND 1
CE1
7
CE2
42
OE
9
WE/PGM
15
IREQ
16
VCC 17
VPP1 18
MIVAL 19
MOVAL 62
MCLK 20
IOCS16
33 GND 34
GND 35
CD1
36
CD2
67
VS1 43
MCLKO 57
IORD
44
IOWR
45
MISTRT 46
MOSTRT 63
VCC 51
VPP2 52
RESET
58
WAIT
59
INPACK 60
REG
61
GND 68
R154
470
R157
470
R159 4.7K
R145
4.7K
R152
4.7K
Q35
KTA1273
R146
4.7K
R147
4.7K
RA16
(4.7K)
18 27 36 45
C109
104
R150
4.7K
R151
4.7K
Q36
KTA1273
R156 4.7K
U21
74LCX244MTC
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
VCC 20
GND 10
C110
104
R144
4.7K
U26
74LCX244MTC
1A1 2
1A2 4
1A3 6
1A4 8
2A1 11
2A2 13
2A3 15
2A4 17
1G 1
2G 19
1Y1
18
1Y2
16
1Y3
14
1Y4
12
2Y1
9
2Y2
7
2Y3
5
2Y4
3
VCC
20
GND
10
U25
74LCX244MTC
1A1 2
1A2 4
1A3 6
1A4 8
2A1 11
2A2 13
2A3 15
2A4 17
1G 1
2G 19
1Y1
18
1Y2
16
1Y3
14
1Y4
12
2Y1
9
2Y2
7
2Y3
5
2Y4
3
VCC
20
GND
10
R148
1K
(4.7K)
R143
R142
(4.7K)
E55
1uF/50V
+
E56
1uF/50V
+
R163
100
R164
100
C123
104
RA17 100
1 8
2 7
3 6
4 5
RA18 100
1 8
2 7
3 6
4 5
C126
104
R176
1K
C120
104
U29
74LCX244MTC
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
VCC 20
GND 10
C122
104
C111
104
JP8
2110-DS10-G(100MIL)
1 2
3 4
5 6
7 8
910
C121
104
R177
1K
R161
33 OHM
R160
33 OHM
P200
PCMCIA SOCKET MODULE A
D0
30 D1
31 D2
32 D3
2D4
3D5
4D6
5D7
6
MDO0 64
MDO1 65
MDO2 66
MDO3 37
MDO4 38
MDO5 39
MDO6 40
MDO7 41
A0
29 A1
28 A2
27 A4
25
A3
26 A5
24 A6
23 A7
22
A8
12 A9
11 A10
8A11
10 A12
21 A13
13 A14
14
MDI0 47
MDI1 48
MDI2 49
MDI3 50
MDI4 53
MDI5 54
MDI6 55
MDI7 56
GND 1
CE1
7
CE2
42
OE
9
WE/PGM
15
IREQ
16
VCC 17
VPP1 18
MIVAL 19
MOVAL 62
MCLK 20
IOCS16
33 GND 34
GND 35
CD1
36
CD2
67
VS1 43
MCLKO 57
IORD
44
IOWR
45
MISTRT 46
MOSTRT 63
VCC 51
VPP2 52
RESET
58
WAIT
59
INPACK 60
REG
61
GND 68
U31
74LCX244MTC
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
VCC 20
GND 10
U22
74LCX244MTC
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
VCC 20
GND 10 U30
74LCX244MTC
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
VCC 20
GND 10
U32
74LCX244MTC
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
VCC 20
GND 10
C115
104 C118 104
C112
104 C119 104
C116
104
C113
104 C117 104
C114
104
U20
74LCX245MTC
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
G19
DIR 1
B1
18
B2
17
B3
16
B4
15
B5
14
B6
13
B7
12
B8
11
VCC
20
GND
10
U27
74LCX244MTC
1A1 2
1A2 4
1A3 6
1A4 8
2A1 11
2A2 13
2A3 15
2A4 17
1G 1
2G 19
1Y1
18
1Y2
16
1Y3
14
1Y4
12
2Y1
9
2Y2
7
2Y3
5
2Y4
3
VCC
20
GND
10
R181
NC(0)
U28
74LCX244MTC
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
VCC 20
GND 10
E59
47uF/16
+
R173
1K
RA14
(4.7K)
18 27 36 45
R149
1K
RA13
(4.7K)
18 27 36 45
R162
1K
RA15
(4.7K)
18 27 36 45
R182
0
R153
4.7K
R178
10k
R179
10k
U23
EPM3032ALC44-10(PLCC)QFP)
VCC0 15 VCC1 3 VCC2 35 VCC3 23
GND0
10
GND1
22
GND2
30
GND3
42
EDARA8
41
EDATA9
40
EDATA11
37 EDATA10
39
EADDR15
11
EADDR16
9
EADDR17
8
SYSCLK
43
CASCS
1
RWN
2CASEN
44
RD__STATN 34
RESETQA 12
RESETQB 14
EN_THRU_Q 33
EN_PCMCIA_Q0 27
EN_PCMCIA_Q1 31
CSADLYOUT 25
CASDLY 24
CASDLYOUT1 29
CASDLY1 28
EN_ADDR 4
EN_DATA 5
REGN 6
OEN 20
WEN 21
IORDN 18
IOWRN 19
CENA 16
CENB 26
TCK
32
TD0
38
TMS
13
TDI
7
GND4
17
GND5
36
TS_CLK
TS_VALID
EDATA8
EDATA9
EDATA10
EDATA11
EDATA10
EDATA9
EDATA14
EDATA11
EDATA15
EDATA12
EDATA13
EDATA8
TS[0..7]
CH_VALID
CH_CLK
CH_STRT PTO[0..7]
CASEN
EDATA10
SYSCLK
EDATA9
EDATA8
R/WN
CASCS
EDATA11
EADDR[0..17]
EADDR14
EADDR13
EADDR12
EADDR11
EADDR10
EADDR9
EADDR8
EADDR7
EADDR6
EADDR5
EADDR4
EADDR3
EADDR2
EADDR1
EADDR0
EADDR15
EADDR16
EADDR17
PCMCIA_A
PCMCIA_B
RESETN
CH_STRT

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
방열판
GND
와 연결하면
안됨
.
R107,U104,Q100,R106
- HDM8513
사용시
R108,R109,R110 -
LSI724
사용시 적용
R101 PHILIPS(100 OHM) HYUNDAI(1KOHM,8513,8513A?)
PHILIOS
적용
HYUNDAI
적용
(8513)-8513A
는
PHILIPS
와 같음
heat sink
H1
PHILIOS
적용
SRT4355 1.1
QPSK DEMODULATOR
Custom
113Thursday, November 15, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
CD0
CD1
CD2
CD3
CD4
CD5
CD6
CD7
CD0
CD1
CD2
CD3
CD4
CD5
CD6
CD7
PTO4
PTO7
PTO6
PTO6
PTO2
PTO1
PTO0
PTO3
PTO0
PTO2
PTO1
PTO5
PTO7
PTO5
PTO4
PTO3
S5V
5V
3.3V 5V
24V
5V
S5V
VT
3.3V
T8V
5V
T121
R121 33
C104
104
L13
10uH
1 2
L14
10uH
1 2
R127 0
R126 0
TS1
NC
1 2
3
5
7
9
11
13
15
17
19
4
6
8
10
12
14
16
18
20
R122 1K
RA11 33
1 8
2 7
3 6
4 5
RA12 33
1 8
2 7
3 6
4 5
R125
4.7K
U17
115-T-7121TP
LNB A 1
LNB B 2
5V(RF) 3
AGC 4
5VA 5
VT 6
5VA 7
I8
Q9
Port 1 10
5VD 11
GND 12
3.3V 13
22KHZ 14
AUX_CK 15
RESET 16
ERROROUT 17
FSTART 18
VALID 19
BCLK 20
D0 21
D1 22
D2 23
D3 24
D4 25
D5 26
D6 27
D7 28
SDA 29
SCLK 30
RA10 33
1 8
2 7
3 6
4 5
U18A
74HC04
1 2
U19
KA317
1 2 3
R135
300(2012)
R134
20KF(2012)
R133
5.1KF(2012)
R132
33KF(2012)]
R131
15KF(2012)
Q26
DTC114
C108
104
Q27
KTA1273
R137
47(2012) C49
104
R138
1.8K/3216
Q29
DTC114 Q30
DTC114
Q28
DTC114
R136
2.7K/3216
F100
RXE065
R139
10K
Q31
DTC114
C48
104
R123 0
R124 0
R140
4.7K
Q32
KTA1273
Q33
KN3904S
R130
10K
R129
10K
Q34
KN3904S
R128
4.7K
L15
FCM2012C-101
1 2
R141
10K
E52
10/50
+
E54
100uF/10
+
E51
47uF/16
+
C107
104
E53
220uF/16V
+
Q25
KN3904S
R183
100K(2012)
R185
47K(2012)
R184
10K(2012)
Q38
DTC114
C105
104
C106
104
U12
KA7805
IN
1GND
2OUT 3
Q37
KN3904S
R186
4.7K(2012)
SDA
CH_VALID
CH_CLK
CH_RST
PTO[0..7]
LNB_P
CH_STRT
SDA
CH_RST
CH_ERROR
SCL
CH_STRT
CH_VALID
CH_CLK
PTO[0..7]
SCL
CH_ERROR
LNB_LP
LNBP_OFF
LNB_P
POLARITY
22ON/OFF
22KHz
LNB_LP LNB_P 22KHz
8051_LNBP_OFF
LNB_DOWN
LOOP_CNTL

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
2.0mm
PITCH
1.1
RF MODULATOR SUB PCB
A
11 11Tuesday, November 20, 2001
Title
Size Document Number Rev
Date: Sheet of
JP7
2250-10S-DS-T
1 2
3 4
5 6
7 8
9 10
U16
RMUP74055WT (
삼성
)
BSTB+
1
VIDEOIN
6
AUDIOIN
2
MODB+
4
SCL
5SDA
3
VT+
7
GND
8
JP10
2250-10S-DS-T
1 2
3 4
5 6
7 8
9 10
C1
103
R1
10K

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
DOWN ARROW
LEFT ARROW
RIGHT ARROW
EXIT
SELECT
UP ARROW
POWER(STBY)
(HUNIN)
TEMIC
1.1
FRONT CIRCUIT
B
1 1Friday, July 27, 2001
UK STRONG
Title
Size Document Number Rev
Date: Sheet of
I8051BD5
I8051BD1
I8051BD3
I8051BD2
I8051BD7
I8051BD4
I8051BD0
I8051BD6
S5V
S5V
S5V
S5V
S5V
S5V
BC1
104
Q1
KST2222A
R5 1K
R6 1K
R7 1K
R8 1K
S5
KPT1105
S6
KPT1105
S3
KPT1105
S4
KPT1105
LED2
Red
LED4
Green
R19 150
LED1
LFD416X
COM1
1
COM2
2
D-
3
DP1/2+
4
E-
5
COM3
6
DP-
7
COM4
8DP3- 9
DP3+ 10
F- 11
DP1/2- 12
C- 13
A- 14
G- 15
B- 16
S2
KPT1105
J1
CON14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Q4
KST2222A
R18 1K
Q3
KST2222A
R14 1K
Q2
KST2222A
R15 1K
U1
74HCT374DW
D0
3
D1
4
D2
7
D3
8
D4
13
D5
14
D6
17
D7
18
OC
1
CLK
11
Q0 2
Q1 5
Q2 6
Q3 9
Q4 12
Q5 15
Q6 16
Q7 19
VCCs 20
GND 10
U2
74HCT374DW
D0
3
D1
4
D2
7
D3
8
D4
13
D5
14
D6
17
D7
18
OC
1
CLK
11
Q0 2
Q1 5
Q2 6
Q3 9
Q4 12
Q5 15
Q6 16
Q7 19
VCCs 20
GND 10 BC2
104
S7
KPT1105
S1
KPT1105
D1
1N4001
D2
1N4001 D3
1N4001
D5
1N4001
D4
1N4001
D6
1N4001 D8
1N4001
R20 150
R21 150
R22 150
R23 150
R24 150
R25 150
R26 150
U3
HI-M602H3-2
OUT
1
GND
2
VS
3
EC1
47uF/16V
+
R27
33
U3
TSOP1238
GND
1
VS
2
OUT
3

4. List of Error codes
E001: Tuner Error.
E002: EEPROM Error.
E003: RF Error.
E004: BT864 Error.
E005: L64005 Error.
E006: DRAM Error.
E007: STV0056 Error.
E008: ATuner Error.
5.Trouble Shooting
There may be various reasons for the abnormal operation of the receiver. Check the receiver
according to the procedures shown below.
If the receiver does not work properly after checking it, please contact the dealer. Don’s open
the receiver cover. It may cause a dangerous situation.
5.1. trouble shooting
Symptom Cause Remedy
The display on front
Panel does not light up. The power cord is Not plugged in Check that the power cord Is plugged in to the wall outlet.
No picture or sound. Wrong connection of
The Audio/Video output
Of the receiver to TV.
Audio muting.
TV power off.
Connect the Audio/Video
Output of the receiver to
TV correctly
Press the MUTE button.
Tum TV on.
No picture. The receiver can’t
Receive the signal.
Incorrect values of some
Tuner parameters.
Wrong direction of
the dish
Check the antenna cable,
Replace the cable, or connect
The cable to the receiver tightly.
Set the values of tuner
Parameters correctly in
System set-up menu.
Check the signal strength
With a spectrum analyzer and
Adjust your dish correctly.

The remote controller
Does not working. The batteries of the Remote controller are
Not inserted or
Exhausted.
Check whether the batteries
Are inserted correctly in your
Remote controller.
Check the batteries, and if
Exhausted, replace the
Batteries of the remote
Controller.
5.2. Check point about badness STB
5.2.1. When nothing appears on TV screen(front panel display “0000”)
(1) Check the SMPS’s voltage
-Power Connect(J2) -> pin4, pin5 : 4.75~5.25V
-Power Connect(J2) -> pin6 : 10.2~12.6V
-Power Connect(J2) -> pin3 : 21V~24V
-Power Connect(J2) -> pin1 : 27V ~ 33V
-Power Connect(J2) -> pin7 : 7.5~8.5V
-Power Connect(J2) -> pin9, pin10 : 3.2~3.5V
Action) : If voltage is not normalcy, it change, and measure again SMPS
first. Still, SMPS is normalcy if voltage is low.There are
possibility that is badness with parts that use the voltage in
Main Board.
(2) Confirm by Oscilloscope whether 27 MHz break out in R10 and R11.
Action) : if 27Mhz do not break out,X1(27Mhz CRYSTAL), or
U6(74LCX04) change .
(3) ROM Read cycle(Pulse) should be happened continuously through
Oscilloscope at Power off/on in pin 26 of U2(39vf800A Flash ROM).
(If U2's pin 26 is 3.3V by Voltage Meter, it isnormalcy)
Action) : if U2-pin26 is measured (0V ~ 2V) by Voltage Meter,
U2(39VF800A FLASH ROM) change, still, change U1(L64108
CPU) if do not act.