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RTD2555LH embedded 16.5KSRAM dynamically stores OSD command and fonts, compatible advanced color
control features.
2.) EEPROM:
We use 24C16 EEPROM to store monitor user data and user preset timings. There are 16 user timing modes
are automatically saved in it. Each timing mode is allocated with 22 bytes of memory space for information such
as Sync frequencies, pol
arities… etc. PC can access the EEPROM data indirectly through the SDA and SCL
channels of DVI and D-sub (IIC communication). The digital and analog DDC data are stored in two 24C02s
EEPROM.
A-2.) Power board diagram:
EMI Filter
Rectifier and
filter
Isolation
power
transformer
Rectifier and
filter
Inverter circuit
PWM contrller
Switching
element
+5V Output
Feedback
Isolation
Rectifier and
filter
LDO regulator
Fig.1
#1 EMI Filter
This circuit (Fig.2) is designed to inhibit electrical and magnetic interference for meeting FCC, VDE, VCCI
standard requirements.
L602
20MH
1
2
4
3
C602
0.22U M
C603
1000P M
C604
1000P M
C601
0.22U M
N1
N3
L6
Summary of Contents for G225HQ
Page 22: ... 22 3 9 Packing ...
Page 23: ... 23 4 Disassembly Assembly 4 1 Exploded View ...
Page 24: ... 24 ...
Page 46: ... 46 5 4 OSD Operation Guide ...
Page 47: ... 47 ...
Page 48: ... 48 ...
Page 49: ... 49 ...
Page 62: ... 62 Appendix 1 Screw List Torque A STANDARD SCREW TORQUE QCS ...
Page 63: ... 63 ...
Page 64: ... 64 B STANDARD SCREW TORQUE QZB QMX ...
Page 66: ... 66 ...
Page 67: ... 67 Appendix 3 I F Board Please see the next page ...