HIK VISION DS7208HVI-ST User manual

Product Maintenance Manual
（HIK/DS7208HVI-ST/SN）
Functional Characteristics：
VGA video output resolution topped 1024 * 768;
Partial digital zoom by using mouse when in HIKVISION PTZ control mode
The first channel support 4CIF/2CIF/CIF/QCIF real-time coding, the others
channel support CIF/QCIF real-time coding;
Support preview images and playback image of electronic amplification；
VGA, VIDEO OUT can be simultaneously screen preview, of which the main
output can output menu operation;
Support four channel synchronous playback;
Support one SATA interface;
Support NTP (network school), SADP (automatic search IP address)
agreement.

1. DS7208HVI-ST/SN Equipment Physical Interface
2. DS7208HVI-ST/SN Equipment Internal Structure
3. DS80061 Mainboard Hardware Principle Diagram
4. DS80061 Mainboard Hardware Modules Diagram
5. DS80061 Mainboard Hardware Module Introduction
5.1. Audio Video A/D Module
5.2. VGA Output Module (Local Preview Image Output Module)
5.3 VOUT Output Module (Local Preview Image Output Module)
5.4 Network Module
5.5 SATA Module
5.6. RS485 Module
5.7. Clock Module
5.8. Voice Talkback Module
5.9. Power Supply Module
6. DS80061 Mainboard Failure Analysis
6.1. First Meet VGA Display
6.2. First Meet VOUT Monitor
6.3 Fault Analysis
①. No VGA Output
②. No VOUT Output
③. Image Problem
④. Voice Problems
⑤.RS485 Failure
⑥. Internet Links
⑦.SATA Hard Dish Fault
⑧. Clock Fault
⑨.VGA Output Color Devation
⑩.USB Fault
Schedule: 1 Crystal Effect
Schedule:2 Voltage Effect

1. DS7208HVI-ST/SN Equipment Physical Interface
Note: Note: The back panel is similar to7208HVI-ST/SN(7216HVI-ST/SN)
2. DS7208HVI-ST/SN Equipment Internal Structure
Note: the front panel no menu operation function
SATA power interface
Front-panel
12V power interfac
SATA interface
Panel line interface
Panel line
USB line
USB interface

3. DS80061 Mainboard Hardware Principle Diagram
DSP
Network
interface
（RTL8201）
TW2866
（US1）
FLASH
DDR∏
6LB18
4
SGM9111
UTP
USB
VGA
VOUT
SATA
LVC07A＋6303
RS232
RS485
Audio in
Video in
Audio out
AOUT
Diagram1.1 DS80061 Hardware Principle Diagram
Note：
TW2866 (US1) support 1 road audio and 4 road video input, voice talkback Line In input
and AOUT output
VGA signal output directly from KY2010 chip, the external circuit by LVC07A + 6303
control VGA output amplification
VOUT signal directly from KY2010 chip output, the external circuit control by SGM9111
VOUT signal amplifier output
no alarm input/out of modules

4. DS80061 Mainboard Hardware Modules Diagram
Diagram 1.2 DS80061 Mainboard Hardware Modules Diagram
VGAmodule
RS485module
USB interface
Network module
VOUT module
SATA
power
module
A/D module
Power module
SATA interface
Clock module
RS232 interface
Network module
Front-panel interface

5. DS80061 Mainboard Hardware Module Introduction
5.1. Audio Video A/D Module
Video A/D Module Main Control Chip：TW2866 Audio
TW2866（US1）PIN 6 control first audio input（input matching resistance 100
(RU9) and capacitance (CS18)）
TW2866（US1）PIN 13/17/21/25 control 1-4 road vedio input（BNC input
matching 4 HK-5 production tube（TVS2/4/6/8）；4 75Ωresistance（RV2/4/6/8）；
4 100Ωresistance（RU1/2/3/4）； 4 capacitance（CS12/8/13/11））
TW2866（US2）PIN 13/17/21/25 control 5-8 road vedio input（BNC input
matching 4 HK-5 production tube（TVS1/3/5/7）；4 75Ωresistance（RV1/3/5/7）；
4 100Ωresistance（RU5/6/7/8）； 4 capacitance（CS42/48/29/33））
27 M (Y4/Y5) : TW2866 work clock, PIN 82 input 27 M
Audio video A/D module component：
100
Ω（
RU1-4
）
（
CS12/8/13/11
）
100
Ω（
RU9
）
TW2866
（
US1
）
75
Ω（
RV1-8
）
HK-5
（
TVS1-8
）
TW2866
（
US2
）
（
CS18
）
27M(Y4/5)
100
Ω（
5-8
）
电容 （
CS42/48/29/33
）

5.2. VGA Output Module (Local Preview Image Output Module)
VGA main chip module：LVC07A, 6303; LVC07A PIN 2 output single(VS)
and 1 K resistance (RL50) connect 5V voltage, PIN 4 output signal (HS) and
1 K (RL51) resistance connect 5V voltage
BAV99: control VGA output amplification, if BAV99 (Q9) 3 feet low level
(voltage 0 V), it means the system to detect VGA display; If you meet VGA
display, system and output signal and system menu VGA; If behind the VGA
display, the system only output VGA signal; If the high level (close to 3.3 V),
it means the system does not detect the display
VGA signal output basic schemes:
①: PIN 10 output “R” signal ;
②: PIN 11 output “B” signal ;
③: PIN 12 output “G” signal ;
④: PIN 4 output “HS” signal ;
⑤: PIN 2 output “VS” signal ;
VGAmaster chip : 74LV07 and 6303
Description:
6303
74LV07
75Ω(RG6)
75Ω(RG5)
75Ω(RG4)
BAV99(Q3)
BAV99(Q8)
BAV99(Q7)
②
①
③
④
⑤

74LV07
PIN4
PIN2
5V
5V
RL50
1KΩ
RL51
1KΩ
VS(Interlacing signal)
HS(Line signal)
BAV99 :
If the PIN 3 of BAV99(Q9) is Low-level ( 0V ), Said system detects VGA
monitor;
If the PIN 3 of BAV99(Q9) is high-level (nearly 3.3V),said system doesn’t detect
VGA monitor;
VGA module components：
5.3. VOUT Output Module (Local Preview Image Output Module)
VOUT main control chip: SGM9111, PIN 3 pull-down 75Ωresistance
(RS188) grounding and input CVBS-OUT signal, PIN 4 through the
75Ωresistance (RS117) output VOUT signal, working voltage through a
LVC07A
BAV99
（
Q3/7/8/9/10/11
）
6303
75
Ω（
RG4/5/6
）
1K
（
RL50
）
33
Ω（
RG27/28
）
1K
（
RL51
）

WCX(FBS48) for 5V power supply
VOUT interface TVS protection tube: VOUT interface connect HK-5 (TVS9)
VOUT signal output basic schemes:
SGM9111
CVBS-VOUT
Pin3 input
75Ω
（RS188）
Pin4 output
75Ω（RS117）
VOUT
FBS48
5V
DSP
Pin5
VOUT Module components：
5.4. Network Module
Network module components：
SGM9111
75
Ω（
RS117
）
WCX
（
FBS48
）
75
Ω（
RS188
）
HK-5
（
TVS9
）

5.4.1 LAN master chip :
Chip name pin Description voltage
RTL8201 36
Operation voltage
input “pin 36” via
“FBN1”
V≈3.3V
5.4.2 Transformer
Chip name Description
MS10232NL Network transmission signal
amplification, rectification
5.4.3 Crystal
Chip name Description
25M(Y3) RTL8201 clock chip
5.4.4 Signal amplification chip :
BV03C（TVS32/17）: used to amply signal transmission (TX) / Receive (RX) ;
5.5.SATA Module
SATA main control chip: KY2010
BD9329 (U1) power piece: PIN 2 enter 12 V, PIN3 output 5V for SATA power
source
SATA module part:
BV03C
（
TVS32/17
）
MS10232
RTL8201
25M
（
Y3
）
WCX
（
FBN1
）