HIK VISION DS7208HVI-ST/SE User manual

Product Maintenance Manual
（HIK/DS7208HVI-ST/SE）
Functional Characteristics：
VGA video output resolution topped 1024 * 768；
The first channel support 4 CIF real-time coding, the others channel
support CIF 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/SE Equipment Physical Interface
2. DS7208HVI-ST/SE Equipment Internal Structure
3. DS80054 Mainboard Hardware Principle Diagram
4. DS80054 Mainboard Hardware Modules Diagram
5. DS80054 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. DS80054 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/SE Equipment Physical Interface
Note: DS7208HVI-ST/SE equipment some no RS485 interface
2. DS7208HVI-ST/SE Equipment Internal Structure
SATA power interface
Front-panel
12V power interfac
SATA interface
Panel line interface
Panel line
USB line
USB interface

3. DS80054 Mainboard Hardware Principle Diagram
DSP
Network
（RTL8201）
TW2866
（US1）
FLASHDDR∏
SP491
SGM9111
UTP
Interface
USB
VGA
Interface
VOUT
Interface
SATA
interface
LVC07A＋6303
RS232
interface
RS485
interface
Audio in
Video in
Audio out
AOUTinterface
Diagram1.1 DS80054 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. DS80054 Mainboard Hardware Modules Diagram
Diagram 1.2 DS80054 Mainboard Hardware Modules Diagram
5. DS80054 Mainboard Hardware Module Introduction
5.1. Audio Video A/D Module
Video A/D Module Main Control Chip：TW2866 Audio
1) TW2866（US1）PIN 6 control first audio input（input matching resistance
100 (RU9) and capacitance (CS18)）
2) 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））
3) 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
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

（RV1/3/5/7 ）； 4 100Ωresistance （RU5/6/7/8 ）； 4 capacitance
（CS42/48/29/33））
27 M (Y4) : TW2866 work clock, PIN 82 input 27 M
Audio video A/D module component：
75
Ω（
RV1-8
）
HK-5
（
TVS1-8
）

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:
27M
（
X4
）
100
Ω（
RU1-4
）
（
CS12/8/13/11
）
100
Ω（
RU9
）
TW2866
（
US1
）
（
CS18
）
100
Ω（
RU5-8
）
（
CS42/48/29/33
）
TW2866
（
US2
）

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:
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：
6303
74LV07
75Ω(RG6)
75Ω(RG5)
75Ω(RG4)
BAV99(Q3)
BAV99(Q8)
BAV99(Q7)
②
①
③
④
⑤


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
WCX(FBS48) for 5V power supply
VOUT interface TVS protection tube: VOUT interface connect HK-5 (TVS9)
VOUT signal output basic schemes:
LVC07A
BAV99
（
Q3/7/8/9
）
6303
75
Ω（
RG4/5/6
）
1K
（
RL50/51
）
33
Ω（
RG30/31
）

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
）