Using Rs-232C Commands - Pioneer PRO-R04U Service Manual

5

6.3 USING RS-232C COMMANDS

For the PDP-434HD and -504HD series Plasma Displays, the circuitry is structured as shown in the diagram below to support
the SR+ system. Controlling with either the SR+ system or RS-232C commands can be selected. As the SR+ system is
selected at shipment, to control with RS-232C commands in servicing it is necessary to switch the paths. After servicing, be
sure to return the setting to the SR+ system.
¶ Rough diagram of switching between SR+ and RS-232C
SR Assy
232C (DSUB_9P)
SR+ (SR out)
¶ How to switch from SR+ to RS-232C
Remote control unit
Enter the Service Factory mode
START
INFORMATION
VERSION
Tips: How to change the SR+/RS-232C setting without entering Service Factory mode
Hold the VOLUME or
Then within 3 seconds after the key is released, hold the 2-screen
Then within 3 seconds after the key is released, use the SET key on the remote control unit to set to RS-232C (the baud rate
last selected is chosen) or the HOME MENU key to set to SR+.
PC
Enter the Service Factory mode
(See "6.7 SERVICE FACTORY MODE".)
START
INFORMATION
VERSION
5
6
232C
Driver
SR+
Interface
SR+ → 232C / 232C → SR+
Select INITIALIZE mode
MUTE
INITIALIZE
SYNC DET
Select SR+ / 232C
INITIALIZE
UART
SR+ ↔ 232C
key on the remote control unit pressed for 3-10 seconds during Standby mode.
232C → SR+ only
Send the command "BR0"
PC
PDP-R04U
6
7
AV BOARD Assy
TXD (EXT), RXD (EXT)
(IF Microcomputer)
SR_EN_B
Select UART
INITIALIZE
UART SELCT
Left Right
key on the remote control unit pressed for 3-10 seconds.
RS-232C
Command "BR0"
7
8
IC9702
Up
Down
Media Receiver
8
A
B
C
D
E
F
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