10
PW1A
Plasma TV
Hitachi RS232C Communication Specification
This document defines the detailed RS232C control protocol for the following Hitachi Plasma
Televisions:
Model: 42EDT41A
CMP420V1A
CMP420V2A
The Information enclosed is subject to change without notice. Please refer to revision number
shown above when inquiring about product support.
1. Hardware Interface
1.1-
The cable interface to the monitor is a 9 pin D-Sub type.
1.2-
The gender of the 9 pin D-sub on the monitor is male. Therefore, the cable interface to
the monitor should be female.
1.3-
The cable is configured in a null modem wiring scheme
1.4-
A pin reference illustrations is provided below:
Figure. 1 (a) Male 9 pin D-sub
(Outside View)
Figure. 1 (b) Female 9 pin D-Sub
(Outside View)
1.5-
Electric: Electrical specification is based on the current RS232C standard.
2. Communication Format
2.1- Port Configuration
(1) Communications System:
Asynchronous
(2) Bit Rate:
9600 bps
(3) Data Length:
7 bit
(4) Parity:
None
(5) Start Bit:
None
(6) Stop Bit:
1 bit
¬ ® ¯ °
± ² ³ ´
° ¯ ® ¬
´ ³ ² ±
Pin #
Signal
Remark
1
NC
2
RXD0
PDP
←
Control PC
3
TXD0
PDP
→
Control PC
4
NC
5
GND
PDP
↔
PC GND
6
NC
7
NC
8
NC
9
NC
Frame
GND
Summary of Contents for 42EDT41A
Page 58: ...58 PW1A 7 Block diagram Block diagram 1 ...
Page 62: ...62 PW1A 7 3 5 3 5 9 3 2 0 1 0 4 2 4 3 3 9 3 8 3 4 3 1 2 1 4 9 2 6 3 3 2 3 1 1 6 9 ...
Page 66: ...66 PW1A 10 Basic circuit diagram POWER BOARD Basic circuit diagram 1 ...
Page 67: ...67 PW1A POWER BOARD Basic circuit diagram 2 ...
Page 68: ...68 PW1A POWER BOARD Basic circuit diagram 3 ...
Page 69: ...69 PW1A POWER BOARD Basic circuit diagram 4 POWER BOARD Basic circuit diagram 5 ...
Page 70: ...70 PW1A 11 Printed wiring board diagram POWER BOARD Printed wiring board diagram 1 ...
Page 71: ...71 PW1A POWER BOARD Printed wiring board diagram 2 ...
Page 72: ...72 PW1A POWER BOARD Printed wiring board diagram 3 ...
Page 73: ...73 PW1A 12 Disassembly diagram ...
Page 78: ...PW1A Power PWB DC Voltages CN805 CN63 CNPPS 78 ...
Page 79: ...PW1A Joint PWB DC Voltages EJF6 EJF5 EJP2 EJP1 EJF1 EJA1 EJF2 79 ...
Page 80: ...PW1A Audio PWB DC Voltages EAJ1 EAF1 EAD1 NOT USED 80 ...
Page 81: ...PW1A Formatter PWB DC Voltages EFJ2 EFJ1 EFG1 EFK1 EFL1 EFA1 EFJ4 EFG2 81 ...
Page 82: ...PW1A YSUS PWB DC Voltages P5 P6 82 ...
Page 83: ...PW1A ZSUS PWB DC Voltages P1 83 ...
Page 86: ......
Page 87: ......
Page 88: ...88 PW1A MEMO ...