Samsung HLS4676SX/XAA Service Manual page 134

13-3-2 DMD Panel Pin Terminal Characteristics Diagram
※ Remove the heat sink attached to the DMD Board and tighten the screws in four places and then inspect the characteristics of
each pin terminal.
Pin Name
V Voltage : 3.3V
V2 VCC2 : 8V
DA A Channel Data Bus [When measured, there should be a waveform]
DB B Channel Data Bus [When measured, there should be a waveform]
NO. MBRST# (Mirror Bias Rest) 26V
G The part from the present position to the GND (The black part is also a GND.)
13-3-3 Description of Terminal Characteristics
Pin Name
SCTRL_AN/P
A channel LVDS serial control
DCLK_AN/P
A channel LVDS CLOCK
SCTRL_BN/P B channel LVDS serial control
DCLK_BN/P B channel LVDS CLOCK
SCPDI SERIAL CONTROL DATA INPUT
SCPDO SERIAL CONTROL DATA OUTPUT
SCPENZ SERIAL CONTROL ENABLE
SCPCLK SERIAL CONTROL CLOCK
DWRDN DMD LOGIC RESET
MBRST(14:0) MIRROR BIAS RESET
MBRST_EXTRA UNUSED MIRROR BIAS RESET
EVCC REFERENCE VOLTAGE DURING SPAM READ TEST OPERATION(NORMAL GND)
VCC2 MIRROR ELECTRODE VOLTAGE(8V)
VCC LOGIC SUPPLY
VSS LOGIC GROUND
Samsung Electronics
The vertical lines, which may occur due to improper connections between the panel and the
PCB, occur with intervals of 50 inches(26mm). If vertical lines occur with intervals of more than
26mms, it indicates a failure of the DDP1011 IC itself. If they occur with intervals of less than
26mm, it means that more than two pins have bad connections.
DA,DB output wave
[Screen:WHITE]
Description Pin Name
T Test Point
ME Mirror Bias Extra
C Clock
P# A,B Channel Positive
N# A,B Channel Negative
Description
Circuit Description
Description
13-7