5

(3)System diagram

Signals flowing between the control panel and the system board are indicated in the chart below. When the panel processing CPU detects that the control panel is operated, the operational contents are transmitted to the System board through the serial data. The state of the equipment and the mes- sages from the System board are received by the LCD controller and then displayed on the LCD.

The LED and buzzers are switched to ON/OFF with the signals from the System control PC board. The control methods of the LED and buzzers differ depending on the model:

e-STUDIO350/450:

They are switched to ON/OFF with the control signals from the System

 

control PC board.

e-STUDIO352/353/452/453: They are switched to ON/OFF with the signals output from the panel pro- cessing CPU, based on serial data transmitted from the System control PC board.

System control PC board

 

Control panel

Power ON/OFF

Reset signals

LCD

controller

Serial data

Inverter for

backlight

Contrast adjustment

circuit

LCD display

640 x 240 dots

Analog

Touch panel

input

 

 

Decoder

Panel

 

processing

 

CPU

 

 

Hard-key matrix

LED driver

Buzzer

LED

e-STUDIO352/353/452/453

LED scan signal

 

 

 

 

 

 

 

 

 

LED serial output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED driver

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Buzzer ON signal

 

 

Buzzer

 

 

LED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

e-STUDIO350/450

Fig. 5-403

e-STUDIO350/352/353/450/452/453

5 - 10 © 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved

CONTROL PANEL

07/11

 

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Toshiba 350, 452, 453, 353 service manual System control PC board Control panel

350, 353, 453, 452 specifications

The Toshiba 452, 282, and 352 models represent a significant leap in multifunction printing technology, designed for office environments that prioritize efficiency, reliability, and advanced features. These models are part of Toshiba's commitment to innovation and sustainability, emphasizing quality output while reducing environmental impact.

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In terms of speed, these models deliver impressive performance, with the capability to print up to 45 pages per minute for the 452, 28 pages per minute for the 282, and 35 pages per minute for the 352. This high-speed output is coupled with a fast first-page out time, ensuring that users spend less time waiting and more time focusing on their core business activities.

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