Service manual

(2) Area data processing
Area information edited by an operator is processed in the SCU and is sent
to the extended IPU through the CPU as area data. In the area data
processing block, area data is processed depending on the selected copy
modes (such as magnification, image shift) and is coded as process codes
(for Under color, Painting, and Single Color) and is sent to the Image
creation for editing circuit.
(3) Image creation for editing
Image data is processed by referring to the area data and the process
codes. Then, the edited image is made in the Image creation circuit.
4.8 OTHERS
4.8.1 Interface
The scanner unit and the printer unit are independent modules controlled by
the SCU (System Control Unit).
4.8.2 IPU Board Test
The Scanner IPU Board contains some LSIs, DRAM, SRAM, and other parts
that control the LSIs, DRAM, and SRAM. These parts are connected to each
other in a complex manner.
In SP mode, there are test programs to identify if the board is defective or
not (SP 4-904-1 ~ 3: 01=OK, 00=NG, do all three tests).
SP4-904-1
SP4-904-2
SP4-904-3
Checks the scanner IPU.
Checks the extended IPU. (Edit machine only)
IMAGE PROCESSING
A166/A187/A189 2-64 SM
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA