Schedule: 1 Crystal Effect; Schedule:2 Voltage Effect - HIKVISION DS7208HVI-ST Product/Maintenance Manual

Schedule: 1 Crystal Effect

Serial
number
1
2
3

Schedule:2 Voltage Effect

The serial
number
1
2
3
Crystals
27M（Y4） TW2866 chips work clock (82 feet input 27 M)
25M（Y3）
24M（Y1）
KY2010 system startup clock, and integrated USB
module clock
Power chip
BD9329 (U1) 2 feet enter 12 V, 3 feet output 5 V, mainly for the SATA hard
disk normal power
BD9328 (U3) 2 feet enter 12 V, 3 feet output 3.3 V, mainly for the power of
BD00IC0WE turn 1.8 V output, as well as the other components
provide normal work voltage
BD9328 (U5) 2 feet enter 12 V, 3 feet 1 V, mainly for the KY2010 system
starts kernel working voltage
BD00IC0WE 8 feet input 3.3 V, foot 1 output 1.8 V, mainly for the KY2010
(U6) system working voltage and DDR2 memory work voltage
Action (devices work clock)
RTL8201 chips work clock
function (devices working voltage)