Daewoo DX-N111N User manual

S/M No. :
Service Manual
Digital Video Recorder
MODEL:DX-N111N
✔ Caution :
In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the latest
parts information,please refer to PPL(Parts Price List) in Service
Information Center (http://svc.dwe.co.kr).
DAEWOO ELECTRONICS CORP.
Dec. 2004
http : //svc.dwe.co.kr
REMOTE
MENU/STILL √ /SLOW+
(LOCK)(STANDBY/ON) (ZOOM) (INFO) (AUDIO)
† /SLOWÐ SETÐ/REV SETÐ/CUE
(R-SEARCH)
REC
STANDBY/ON REC SCHEDULE LOCK
(E-SEARCH)
STOP
(T-SEARCH)
PLAY
(CLEAR)
DISPLAY
HDD LOCK
STANDBY/ON
ZOOM P/T/Z DVR ID
DISPLAY INFO
SLOW+
REV
LOCK
R-SEARCH SHIFT/R T-SEARCH
E-SEARCH
SLOW–
AUDIO SET– MENU
STILL
SET+CLEAR
REC STOP PLAY SHIFT/D
-._
ABC DEF GHI JKL
CUE
12345
MNO PQR STU VWX YZ@
678910

1
SPECIFICATIONS .............................................................................................................................................2
DISASSEMBLY ORDER ...................................................................................................................................3
NVP3000 BLOCK DIAGRAM.............................................................................................................................4
NVP3000 PIN...................................................................................................................................................5
NVP3000 PIN ASSIGNMENT ...........................................................................................................................6
EXTECTED RECORD TIME(80GB HDD USE) .....................................................................................................9
U-COM PIN DESCRIPTION .............................................................................................................................10
TROUBLE SHOOTING ....................................................................................................................................13
SCHEMATICS ................................................................................................................................................20
COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW ............................................................................28
1CH DVR BLOCK DIAGRAM...........................................................................................................................30
VIDEO OPERATING ........................................................................................................................................31
AUDIO OPERATING........................................................................................................................................32
TERMINAL OPERATING .................................................................................................................................33
ELECTRICAL PART LIST..................................................................................................................................34
CONTENTS

2
DISASSEMBLY ORDER
3
SPECIFICATIONS
System Type Mobile Stand Alone Type DVR
Video Input 1 Ch (BNC)
VIdeo Out 1 Composite (BNC), 1 Composite (RCA)
Loop Back Out None
Audio Input 2 Ch Mono (RCA), 1 Mic (selectable)
Audio Output 1 Ch Mono (RCA)
Live Display Speed 60fps
Live & Playback Display 1, 2X Zoom
Live Display Resolution 720(H) x 240(V)
Recording Mode Manual, Schedule, Alarm, Motion
Recording Method (Compression Rate) 3 steps (High, Mid, Low)
Record/Playback Resolution 720(H) x 240(V)
Maximum Recording Speed Max. : 60fps
Recording Speed Option NTSC : 1/30, 1/15, 1/10, 1/5, 1/3, 1/2, 1, 2, 3, 5, 10, 15, 30, 60
(Time-lapse recording - fps)
Pre Alarm Record Yes (15field)
Compression (Codec) M-JPEG
Playback Search Mode Time Search, Event Search, Record Search
Playback Speed Forward : x1, x2, x4, x8, x16
Reverse : x1, x2, x4, x8, x16
Still and Frame Advance
Multi Tasking Duplex (REC and PB)
Alarm Sensor Motion/D, 4 Alarm In, 1 Alarm Out
Wired Remocon (Remote Eye) Yes
Interface (Backup) VCR
Pan/Tilt/Zoom Control –
Operating System Embedded RTOS
System Control Front 9keys , 1R Remote 30keys
LED Display 6EA
Hard Disk Storage 3.5” IDE Type
Removable HDD YES
Ambient Temperature 0p : 0° to 40°, Non 0p : –40° to 70°
Relative Humidity 0p : 5% to 90%, Non 0p : 5% to 95%
Shock (Gs max at 2msec) 0p : 63Gs, Non 0p : 350Gs (Seagate HDD Used)
Vibration (0 to peak, 22~350Hz) 0p : 0.5Gs, Non 0p : 5.00Gs (Seagate HDD Used)
Power Supply DC12V – 36V (Free Volt), 15W
Dimension (mm) 178(W) x 275 (D) x 82(H)
Weight (Net) 3kg

5
NVP3000 PIN
4
NVP3000 BLOCK DIAGRAM
Pre
Processor
Raster
To
Block
HDD
Control
Post
Processor
SDRAM
HDD
JPEG
Encoder
Block
To
Raster
SDRAM
micom_if
MICOM
JPEG
Decoder
1
RASB_D
53
105
FLASH
VSSI
NVP3000
2DATA_E[3]
3DATA_E[2]
4DATA_E[1]
5
VDD3I6
EXT_TRIG_OUT
7
TDATA_IN
8
TCLK_IN
9
CLK27I10
VIN[0]
11
VIN[1]
12
VIN[2]
13
VIN[3]
14
VIN[4]
15
VIN[5]
16
VIN[6]
17
VIN[7]
18
VSSOP
19
RSYNC
20
AOUT
21
XSYNC
22
VDD3OP
23
CLK27O
24
VOUT[7]
25
VOUT[6]
26
VSSI
27
VOUT[4]
28
VOUT[3]
29
VOUT[2]
30
VDD3I
31
VOUT[0]
32
DATA_D[0]
33
DATA_D[1]
34
VSSI
35
DATA_D[2]
36
DATA_E[0]
37
VDD3I
38
BCLK
39
VOUT[1]
40
VSSI
41
AIN
42
VOUT[5]
43 DATA_D[3]]
44 DATA_D[4]]
45 DATA_D[5]]
46 VDD3I
47
DATA_D[10]
48
DATA_D[6]
49
DATA_D[7]
50
DATA_D[8]
51
DATA_D[9]
52
VSSOP
CLK54O_D
54
VDD3I
55
BA_D[0]
56
BA_D[1]
57
CASB_D
58
ADDR_D[0]
59
WEB_D
60
ADDR_D[4]
61
KEY_DATA[0]
62
VDD3I
63 64
KEY_SEL[3]
65
66
ADDR_D[8]
67
KEY_DATA[4]
68
SHUTTLE[0]
69 70 71
ADDR_D[1]
72
VSSI
73
ADDR_D[2]
74
ADDR_D[3]
75 ADDR_D[5]
76 VDD3I
77 ADDR_D[6]
78 ADDR_D[7]
79
ADDR_D[9]
80
VSSOP
81
ADDR_D[10]
82
ADDR_D[11]
83
KEY_DATA[1]
84
VDD3OP
85
KEY_DATA[2]
86
KEY_DATA[3]
87
KEY_DATA[5]
88
VSSI
89
KEY_SEL[0]
90
KEY_SEL[1]
91
KEY_SEL[2]
92
KEY_SEL[4]
93
KEY_SEL[5]
94
JOG[0]
95
JOG[1]
96
VSSI
97
SHUTTLE[1]
98 99
100
101
SHUTTLE[2]
102 103 104
106
VDD3I
107
MCSN
108
MWEN
109
MDATA[3]
110
VSSI
111
MDATA[6]
112
MDATA[5]
113
MDATA[7]
114
VDD3OP
115
MDATA[2]
116
MDATA[1]
117
MRDN
118
MDATA[0]
119
VSSI
120
MDATA[4]
121
MADDR[0]
122
MADDR[1]
123
MADDR[2]
124
TEST0
125
CLK54I
126
TEST1
127
HWR_RD
128
HACC_REQ
129
HCSN0
130
HCSN1
131
HADDR[0]
132
133
HADDR[1]
134
135
136
137
VSSOP
138
139
140
141
VDD3I
142
VDD3OP
143
HADDR[2]
144
VSSI
145
HDATA[0]
146
HINTRQ
147
HIORDY
148
HIORN
149
HIOWN
150
HDATA[1]
151
HDATA[5]
152
HDATA[2]
153
HDATA[3]
154
HDATA[4]
155
HDATA[6]
156
VDD3I
158
HDATA[10]
159
VSSI
160
HDATA[12]
162
HDATA[14]
163
VDD3I
164
HRSTN
161
HDATA[13]
157
HDATA[9]
166
ADDR_E[11]
167
VSSOP
168
ADDR_E[9]
170
VDD3OP
171
ADDR_E[6]
172
ADDR_E[5]
169
ADDR_E[7]
165
HDEN
174
VSSI
175
ADDR_E[2]
176
ADDR_E[1]
178
BA_E[1]
179
VDD3I
180
BA_E[0]
177
ADDR_E[0]
173
ADDR_E[4]
182
CASB_E
183
VSSI
184
WEB_E
186
DATA_E[15]
187
VDD3I
188
DATA_E[14]
185
DQM1_E
181
CLK54O_E
190
191
192
HDATA[15]
194
ADDR_E[3]
195
196
HDATA[11]
193
DQM0_E
189
DATA_E[13]
198
RASB_E
199
200
VSSOP
202
DATA_E[9]
203
DATA_E[8]
204
DATA_E[7]
201
DATA_E[10]
197
ADDR_E[10]
206
DATA_E[5]
207
DATA_E[4]
208 205
DATA_E6] ADDR_E[8] HDATA[8] HDATA[7] DATA_E[11] DATA_E[12]
SHUTTLE[3]
VDD3I
RSTB
NW_RDY
MINTRQ
VSSOP
TEST
DATA_D[11] DATA_D[12] DATA_D[13] VDD3OP DATA_D[14] DATA_D[15] VSSI DQM1_D DQM0_D

7
NVP3000 PIN ASSIGNMENT
6
NVP3000 PIN ASSIGNMENT
total user IO pin : 167-pin
VIN
AIN
AOUT
VOUT
SDRAM_E
TRIG/TCLK/TDATA/
CLK54I/RSTB
TEST0/TEST1/
BND/TEST
STORAGE
MICOM
KEY
JOG-
SHUTTLE
SDRAM_D
9
2
3
9
536
36
4
29
16
6
12
–VIN (9-pin)
•CLK27I :27MHz clock input
•VIN [7:0 ] ::Video data input
–AIN (2-pin)
•AIN :Serial audio data input
•RSYNC :Audio data receive sync output
–AOUT (3-pin)
•AOUT :Serial audio data output
•BCLK :Serial bit clock output
–VOUT (9-pin)
•CLK27O :27MHz clock output
•VOUT [7:0 ] ::Video data output
–SDRAM_D (36-pin)
•CLK540_D :SDRAM driving clock output
•RASB :Row address strobe output
•CASB :Column address strobe output
•WEB :Write enable output
•DQM0 :Data(DQ)mask output
•DQM1 :Data(DQ)mask output
•DATA [15:0 ] ::Data bus inout
•ADDR [11:0 ] ::Address bus output
•BA [1:0 ] :Bank selection output
–KEY (12-pin)
•KEY_DATA [5:0 ] ::Key scan row address output
•KEY_SEL [5:0 ] ::Key data input
–JOG-SHUTTLE (6-pin)
•JOG [1:0 ] :Jog signal input
•SHUTTLE [3:0 ] ::Shuttle signal input
–MICOM (16-pin)
•MADDR [2:0 ] ::Indirect register address input
•CSN :Chip select input
•WEN :Write enable input
•RDN :Read enable input
•INTRQ :Interrupt output
•MDATA [7:0 ] ::Data inout
•NWRDY :network ready strobe

9
EXPECTED RECORD TIME (80GB HDD use)
8
NVP3000 PIN ASSIGNMENT
0.0050.0070.013Mbps
77672.3Hour51781.5Hour27740.1Hour0.03fps
14 0.00230.00350.0066Mbps
0.0160.0230.044Mbps
23301.7Hour15534.5Hour8322.0Hour0.1fps
12 0.0080.0120.022Mbps
38836.1Hour25890.8Hour13870.1Hour0.06fps
13
1165.1Hour776.7Hour416.1Hour2fps
70.160.230.44Mbps
2330.2Hour1553.4Hour832.2Hour1fps
80.0780.1170.219Mbps
4660.3Hour3106.9Hour1664.4Hour0.5fps
90.0390.0590.109Mbps
7767.2Hour5178.2Hour2774.0Hour0.3fps
10 0.0160.0230.066Mbps
155.3Hour103.6Hour55.5Hour15fps
31.21.83.3Mbps
233.0Hour155.3Hour83.2Hour10fps
40.81.22.2Mbps
466.0Hour310.7Hour166.4Hour5fps
50.390.591.09Mbps
776.7Hour517.8Hour277.4Hour3fps
60.230.350.66Mbps
11650.8Hour7767.2Hour4161.0Hour0.2fps
11
38.8Hour25.9Hour13.9Hour60fps
14.77.013.1Mbps
77.7Hour51.8Hour27.7Hour30fps
2
LOWMIDDLEHIGHUNIT
2.33.56.6Mbps
LOWMIDDLEHIGHPIC.QualityREC LEVEL
101528KBFile size/1f
–Storage (29-pin)
•DATA [15:0 ] :Storage data inout
•CSN1 :Storage address output
•CSN0 :Storage address output
•ADDR [2:0 ] ::Storage address output
•IOWN :Storage write strobe output
•IORN :Storage read strobe output
•INTRQ :Storage interrupt input
•RSTN :Storage reset output
•IORDY :Storage ready signal input
•DEN :Data bus control input
•ACC_REQ :External bus access request
•WR_RD :External bus write/read access strobe
–TEST0/TES1/BND/TEST (4-pin)
•TEST0,TEST1 :Chip operation mode selection input
•FLASH :Chip bonding option selection input
•TEST :Chip test input pin for storage device reset point
–SDRAM_E (36-pin)
•CLK54O_E :SDRAM driving clock output
•RASB :Row address strobe output
•CASB :Column address strobe output
•WEB :Write enable output
•DQM0 :Data(DQ)mask output
•DQM1 :Data(DQ)mask output
•DATA [15:0 ] ::Data bus inout
•ADDR [11:0 ] ::Address bus output
•BA [1:0 ] :Bank selection output
–CLK54I/RSTB/TRIG_OUT/TCLK/TDATA (5-pin)
•CLK54I :54MHz main clock input
•RSTB :Global reset input
•TRIG_OUT :External trigger signal output
•TCLK :Serial channel ID decoding strobe
•TDATA :Serial channel ID decoding data

11
Pin No. Pin Name Type Connection Short Description
39 X2 out OUT MICOM MAIN CLOCK OUTPUT
40 Vss IN MICOM POWER SOURCE
41 X3 in IN MICOM CLOCK INPUT
42 X3 out IN/OUT MICOM CLOCK OUTPUT
43 CLK SEL IN SELECTIVE CLOCK INPUT
44 AUDIO SEL3 IN AUDIO SELECT INPUT
45 AUDIO SEL2 IN AUDIO SELECT INPUT
46 NUB IN NOT USABLE
47 LP IN/OUT CONNECTION PIN FOR OSCILLATION CIRCUIT FOR INTERNAL
SYNCHRONOUS SIGNAL GENERATOR
48 ALARM IN4 IN/OUT ALARM SIGNAL INPUT
49 OSD GND IN OSD POWER SOURCE INPUT
50 VIDEO IN IN COMPOSITE VIDEO SIGNAL INPUT
51 LECHA IN WHITE LEVEL INPUT
52 VIDEO OUT IN/OUT COMPOSITE VIDEO SIGNAL OUTPUT
53 OSD Vcc IN OSD POWER SOURCE INPUT
54 HLF IN/OUT FILTER CONNECTION PIN FOR SLICER
55 PLAY LED IN/OUT PLAY LED SIGNAL
56 V IN IN COMPOSITE VIDEO SIGNAL INPUT
57 NUA IN/OUT NOT USABLE
58 H SYNC IN/OUT HORIZONTAL SYNC INPUT
59 V SYNC IN/OUT VERTICAL SYNC INPUT
60 S D2 IN/OUT DECORDER,ENCORDER IIC DATA LINE 2
61 S D1 IN/OUT DECORDER,ENCORDER IIC DATA LINE 1
62 S CLK IN/OUT DECORDER,ENCORDER IIC CLCOK LINE
63 LOCK LED IN/OUT LOCK LED SIGNAL
64 LE IN/OUT
65 RE IN/OUT
66 ADDR2 IN/OUT
67 ADDR1 IN/OUT
68 ADDR0 IN/OUT
69 ALARM OUT IN/OUT ALARM SIGNAL OUTPUT
70 3000_NBUSY_IRQ IN/OUT NVP3000 GLOBAL RESET OUTPUT SIGNAL
71 ROM CLOCK IN/OUT ROM MEMORY SIGNAL
72 AUDIO SEL1 IN/OUT AUDIO SELECT SIGNAL
73 SUSPEND IN/OUT
74 BUZ SIG IN/OUT BUZZER CONTROL SIGNAL OUTPUT
75 VBUS PWR VALID IN/OUT
u-COM PIN DESCRIPTION
10
u-COM PIN DESCRIPTION
Pin No. Pin Name Type Connection Short Description
1 REC LED OUT Record LED
2 SCHEDULE LED OUT Schedule LED
3 POWER FAIL IN/OUT POWER SUPPLY VOLTAGE LEVEL INPUT
4 ALARM IN2 IN/OUT ALARM SIGNAL INPUT
5 ALARM IN1 IN/OUT ALARM SIGNAL INPUT
6 CODEC D11 IN CODEC SIGNAL INPUT
7 CODEC D10 IN CODEC SIGNAL INPUT
8 CODEC D9 IN CODEC SIGNAL INPUT
9 CODEC D8 IN CODEC SIGNAL INPUT
10 NVP3000 CS IN NVP3000 CHIP SELECT INPUT
11 CODEC D14 IN CODEC SIGNAL INPUT
12 CODEC D13 IN CODEC SIGNAL INPUT
13 CODEC D12 IN CODEC SIGNAL INPUT
14 REMOCON IN IN/OUT REMOCON SIGNAL INPUT
15 SP CLK IN
16 RWN IN/OUT READ WRITE ENABLE SIGNAL
17 NVP1200 CS IN NVP1200 SELECT INPUT
18 CODEC D7 IN CODEC SIGNAL INPUT
19 CODEC D6 IN CODEC SIGNAL INPUT
20 CODEC D5 IN CODEC SIGNAL INPUT
21 CODEC D4 IN CODEC SIGNAL INPUT
22 CODEC D3 IN CODEC SIGNAL INPUT
23 CODEC D2 IN CODEC SIGNAL INPUT
24 CODEC D1 IN CODEC SIGNAL INPUT
25 CODEC D0 IN CODEC SIGNAL INPUT
26 OSD DATA 7 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 7
27 OSD DATA 6 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 6
28 OSD DATA 5 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 5
29 OSD DATA 4 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 4
30 OSD DATA 3 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 3
31 OSD DATA 2 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 2
32 OSD DATA 1 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 1
33 OSD DATA 0 IN/OUT MUC IC CONTROL PARALELL SIGNAL OUTPUT 0
34 RESET IN MICOM RESET INPUT
35 X1 in IN MICOM SUB CLOCK INPUT
36 X1 out IN/OUT MICOM SUB CLOCK OUTPUT
37 Vcc IN MICOM POWER SOURCE
38 X2 in IN MICOM MAIN CLOCK INPUT

13
TROUBLESHOOTING
12
u-COM PIN DESCRIPTION
1. POWER CIRCUIT
Pin No. Pin Name Type Connection Short Description
76 RESET B IN/OUT RESET INPUT SIGNAL
77 IORW IN/OUT
78 NET_INT IN/OUT
79 IN/OUT
80 CS IN/OUT
81 nAVR_RD IN/OUT READ ENABLE SIGNAL OUTPUT
82 nAVR_WR IN/OUT WRITE ENABLE SIGNAL OUTPUT
83 SW TRIG IN/OUT EXTRA TRIGGER INPUT
84 P3000_IRQ IN/OUT
85 ALARM IN 3 IN ALARM SIGNAL INPUT
86
87
88 AMP VSS IN AMP VSS
89
90
91 AMP Vrefout OUT ANALOG AMPLIFIER’S REFERENCE VOLTAGE OUTPUT
92 AMP Vrefin IN ANALOG AMPLIFIER’S REFERENCE VOLTAGE INPUT
93 C IN CAPACITOR CONNECTION PIN
94
95
96
97
98 AMP VCC IN ANALOG AMPLIFIER’S POWER SOURCE INPUT
99 Avcc IN REFERENCE VOLTAGE INPUT
100 HDD DETECT IN/OUT FRAME ADVANCE BREAKE ADJUST VOLTAGE INPUT
No output voltage of Power Circuit.
Check the DC Adapter
Check the 2 pin in the P912
Check the 30,31pin
in the P902
Replace the DC Adapter
Replace the P912
Replace the P902 or Check
the pattern in Rear Board.
Replace the L802
NO
YES
YES
NO
Replace the F801 or wait
for 1min,because this fuse
type is a PTC.
NO
Check the pattern from C820(+)
to each power IC s input.
NO
NO
Check the F801
YES
Check the L802
YES
Check 18,19,20,21 pin
In the IC801,IC802,IC803
YES
Check 12V Output at L801
YES
Check 6V Output at L811
Check 3.3V Output at L831
NO

15
TROUBLESHOOTING
14
TROUBLESHOOTING
No output 12V of IC 801
Check the 5V at pin 4 IC804.
Vout =IC804 out voltage.
Is the Q801 turn on?
Check the pin1 in IC806
5V <Vin
Replace the IC804
Check the IC806
Check the previous
Power circuit
Replace the IC804
NO
YES
YES
YES
NO
Check the R828,R829,D805
NO
NO
Check the 18-21 pin IC801
Vdd =Vin
Check the pin 11-14 in IC 804
42V Oscillation.
Under the 17V
YES
Check the 5V at pin 4 IC804.
Ever 12V =IC804 out voltage.
Check the D862,L811,IC802
YES
YES
YES
YES
NO
NO
Over the 17V
Check the Q801
Check the D804
No output 6V of IC 802
Check the pin 11-14 in IC 802
42V Oscillation.
Check the pin 25 in IC 802
25V Oscillation.
Check the pin 8 in IC 802
10V Oscillation.The same frequency
Of Pin25 in IC802.
Check the D862,L811,IC802
Check the D861,IC802
NO
Check the previous
Power circuit
NO
YES
YES
YES
Check the D861 IC802
NO
NO
Check the 18-21 pin IC802
Vdd =Vin

17
TROUBLESHOOTING
16
TROUBLESHOOTING
No output 3.3V of IC 803
Check the pin 11-14 in IC 803
42V Oscillation.
Check the pin 25 in IC 803
25V Oscillation.
Check the pin 8 in IC 803
10V Oscillation.The same frequency
Of Pin25 in IC803.
Check the D832,L831,IC803
Check the D831,IC803
NO
Check the previous
Power circuit
NO
YES
YES
YES
Check the D831,IC803
NO
NO
Check the 18-21 pin IC803
Vdd =Vin
2. VIDEO
The Input signal is the color bar for the video test.
Check the 29-29,31-34
In IC302. You can see the 8bit
digital signal.
Also Pin 12-15,17-20
in IC601 and JP313-JP320.
Check Pin52 in IC501,Analog Video
Signal in this port.
Check the pattern or
Replace the IC302 or
Replace the JP.
NO
Check the pattern and P901,P301
and Flat cable.
NO
YES
YES
YES
Check the Pin1,8 in IC308
YES
Check the Pin3,6 in IC308 or
Pin 9 in P301 or Pin9 in P901.
YES
Check the Pin 9 in P301 or
Pin9 in P901.
YES
You can find the color bar
signal at P901,P301 pin 1

19
TROUBLESHOOTING
18
TROUBLESHOOTING
3-1. LINE 1
3-2. LINE 2
If you selected Audio2 in
menu
Check the Pin19 in P301 or Pin8 in
IC310
YES
YES
The rest procedure is same as the
case of Audio1
Check the Audio On key. You can see the audio mark on the screen.
If you selected Audio1 in menu
YES
NO
NO
YES
YES
Check the Pin13 in P301 or Pin3
in IC310
Check the Pin2,4,9 in IN310 or
The Pin 19 in IC305.
Check the Pin 3 in IC305
Or pin 15 in P301.
Check the C382,R341,R340
Check the C416, R347, R348
3-3. MIC
3. AUDIO
If you selected MIC in menu
Check the Pin13 in P301 or
Pin3 in IC310
YES
NO
NO
YES
YES
Check the Pin5 in IC309
Check the Pin7 in IC309,
You can find the amplified MIC
signal
YES
Check the Pin1 in IC310
Check the Pin2,4,9 in IN310 or
The Pin 19 in IC305.
Check the Pin 3 in IC305
Or pin 15 in P301.
Check the C382,R341,R340
Check the C416,R347,R348

20
SCHEMATICS
1. CONNECTION DIAGRAM (3.0 COMBO)

21
SCHEMATICS
2. BLOCK DIAGRAM

22
SCHEMATICS
3. FRONT SCHEMATIC DIAGRAM (S/A 3.0 COMBO)

23
CIRCUIT DIAGRAM
4. JACK SCHEMATIC DIAGRAM

24
CIRCUIT DIAGRAM
5. POWER SCHEMATIC DIAGRAM

25
6. SYSCON SCHEMATIC DIAGRAM
CIRCUIT DIAGRAM

26
CIRCUIT DIAGRAM
7. VIDEO/AUDIO SCHEMATIC DIAGRAM

27
CIRCUIT DIAGRAM
8. CODEC SCHEMATIC DIAGRAM

28
COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW
1-1 . VCR (MAIN)