New Circuit Description; Output Voltage States Of The Dmd Board Parts; Dmd Panel Pin Terminal Characteristics Diagram - Samsung HLS5087WX/XAA Service Manual

Circuit Description

13-3 New Circuit Description

13-3-1 Output Voltage States of the DMD Board Parts

Output Terminal
Waveform for
RA600,601,602,603

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.)
13-6
25V 25V
8V 8V
- 26V - 26V
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
LOC Characteristics
BD904 LAMP EN High from DDP1011
BD902 LAMP LITZ High(5V) before the lamp turns on, Low(0V)
when the lamp turns on
Pin Name
T Test Point
ME Mirror Bias Extra
C Clock
P# A,B Channel Positive
N# A,B Channel Negative
Description
www.fieldtechsource.net
Samsung Electronics