Block Diagram - ViewSonic PJ513D-1 Service Manual

7. Block Diagram

Hardware Architecture
The Projector consists of the Source board, Main board, Keypad board, Fan board, EMI board,
PFC board, Ballast board, Door interlock switch, Color wheel index sensor board, and the
Thermal break sensor board. Please see Figure 1.
Source Board consists of audio phone jack, video RCA jack, S-video mini-DIN head, and USB
head. Main Board consists of RGB A/D conversion, Video decoder, DLP ASIC, Flash and RAM,
Motor driver, DMD Reset driver DAD2000, and IR receiver. Keypad Board consists of 8 keypads
and 3 twice-color LEDs. Fan Board consists of DC/DC converter, Thermal Break circuit, Blower
Fan driver circuit, Rear Fan driver circuit, and the temperature sensing circuit. Power supply
circuit consists of AC line EMI filter, Power Factor Correction circuit. Ballast Board consists of
Lamp synchronization circuit, Lamp lit feedback circuit, and Lamp power control circuit.
Hardware Architecture
Keypad Circuit
Input Source
Circuit
From AC
socket
ViewSonic Corporation
Main Operation Circuit
(DLP Image Processor
DDP2230)
(Video decoder TVP5147)
(DMD Reset driver DAD2000)
(A/D 9883)
(RAMBUS XDRAM)
CW Lamp
Index Door
sensor switch
Door
interlock
switch
Fan Driver
Circuit
EMI PFC Circuit
Filter
90
Confidential - Do Not Copy
Thermal break
sensor Circuit
Ballast
Module
To Lamp
PJ513D-1