Rs-232C; Outline Of The Rs-232C; Prepared Tools; How To Switch Sr+/ Rs-232C - Pioneer PDP-4271HD Service Manual

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9. RS-232C

9.1 OUTLINE OF THE RS-232C

9.1.1 PREPARED TOOLS

It is necessary to prepare the following one to use 232C command.
• PC
• Application for control
• 232C cable (straight)
∗ It is likely not to move correctly in Win 98 faction/Me and Win for foreign countries.
∗ The setting of the Com port cannot be communicated if it doesn't do correctly.
(Please follow a set explanation of PC in the Com port)

9.1.2 HOW TO SWITCH SR+/ RS-232C?

There are "How to switch SR+/RS-232C by remote control in Standby Mode" and "How to switch
SR+/RS-232C by remote control in the INTEGRATOR MENU" as a Method
To select SR+/RS-232C by remote control in Standby Mode
# During Standby mode, the following operation is done within 10 seconds.
To select from SR+ to RS-232C/To select from RS-232C to SR+)
During standby mode, hold the [VOLUME+(or-)] key on the remote control unit pressed
for 3-10 seconds.
released, use the [SET(ENTER)] 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+
# During IF Standby mode (once 10 seconds or more has passed after the LED goes dark during
communication), the first key press may not be accepted. In such a case, for a key operation,
first press any key other than the [POWER] key and [CH] keys, then the desired key.
# At the switch SR+/RS-232C, the LED will be blinked on the fixed time.
To select SR+/RS-232C in the INTEGRATOR MENU
# How to enter INTEGRATOR MENU.
During standby mode, press the [Home Menu] key, and then press the [POWER] key within
3 seconds. Or during Factory mode, hold the [INTEGRATOR] key.
# In INTEGRATOR MENU, there is a OSD where SR+(or RS-232C) is turned on/off, and it switches
on the screen.

9.1.3 USING RS-232C COMMANDS.

For the PDP-4271HD/KUCXC, PDP-5071PU/KUCXC, PRO-940HD/KUCXC and PRO-1140HD/KU
CXC 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
MTB MAIN Assy
SR BLOCK
232C (DSUB_9P)
SR+ (SR out)
5
6
Then within 3 seconds after the key is released, hold the [2-screen] key
232C
Driver
SR+
Interface
6
7
IF UCOM BLOCK
TXD (EXT), RXD (EXT)
IC8301
(IF Microcomputer)
SR_EN_B
PDP-4271HD
7
8
A
B
C
D
E
F
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