Acer H233H Product Service Manual page 59

output section contains a 24-bit TTL output interface and a channel LVDS transmitter for
direct interfacing of commercially available LVDS LCD panel modules. In addition,
RTD2525LH 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, polarities... 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
PWM
controller
Isolation power
transformer
Switching
element
Feedback
Isolation
Fig.1
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Rectifier
and filter
Rectifier
and filter
Inverter
circuit
LDO
regulator