Sony STR-DB798 Service Manual page 60

STR-DB798
– DISPLAY Board –
IC1001 uPD16315GB-3BS
LED1 1
LED2 2
LED3 3
LED4 4
OSC
OSC 5
6
DOUT
DIN 7
SERIAL
INTERFACE
CLK 8
STB 9
KEY1 10
11
KEY2
60
44 43
4-BIT LATCH
12-BIT SHIFT
REGISTER
KEY DATA MEMORY
(2 x 16 BITS)
TIMING GENERATOR
KEY SCAN
DISPLAY MEMORY 24-BIT OUTPUT
24 BITS x 12 WORDS LATCH
COMMAND DIMMING
DECODER CIRCUIT
12 13
42 41 40 39 38 37 36
12 4
GRID
DRIVER
8
8
DATA MULTIPLEXED
SELECTOR DRIVER
8
24 16
SEGMENT
DRIVER
14 15 16 17 18 19 20
35 34
4
33 SEG19/GRID10
32 SEG18/GRID11
31 SEG17/GRID12
8
30 VEE
29 SEG16/KS16
28 SEG15/KS15
27 SEG14/KS14
16
26 SEG13/KS13
25 SEG12/KS12
24 SEG11/KS11
23 SEG10/KS10
21 22