Block Diagram Of Assy For Each Led-A To Led-G - Pioneer PDK-50HW2 Service Manual

PDK-50HW2

7.1.2 Block diagram of ASSY for each LED-A to LED-G

The illustration shows the block diagram of the basic LED formation (applicable to LED-A to LED G).
For both horizontally and vertically formatted boards, the block structure is the same. If any of the three problems listed below are
encountered, use the checkpoints listed below.
•If the unit length of the board is a problem
For a horizontally formatted board, the HBOARD_SEL signal may have been interrupted.
For a vertically formatted board, the VBOARD_SEL signal may have been interrupted.
•When there is a problem within the 8 LED unit
For a horizontally formatted board, the HBLOCK_SEL signal may have been interrupted.
For a vertically formatted board, the VBLOCK_SEL signal may have been interrupted.
•When there is a problem with the 8 LED sensor cycle
For horizontally and vertically formatted boards, the LED_SEL signal may have been interrupted.
78
LED
(x 8)
LED
(x 8)
LED
(x 8)
LED
(x 8)
LED
(x 8)
LED
(x 8)
LED
(x 8)
LED
(x 8)
ENABLE
3 to 8 Line
BOARD_SEL
BLOCK_SEL
Digital Transister
3 to 8 Line
CLK
LED_SEL
(Modulation)