Sony HCD-HDX285 Service Manual page 67

HCD-HDX285/HDX287WC/HDX585/HDX587WC/HDX589W/HDX685/HDX686W
– FL-JACK Board –
IC5000 TK11233CMCL-G
6 5
CONTROL
CIRCUIT
CONSTANT
CURRENT
SOURCE
BANDGAP
REFERENCE
1 2
IC5001 HT16515
LED0 1
LED1 2
3
LED2
LED3 4
OSC 5 OSC
DO 6
DI 7
SERIAL
INTERFACE
CLK 8
CS 9
10
KEY0
KEY1 11
4
OVER HEAT &
OVER CURRENT
PROTECT
3
44 43
4-BIT LATCH
12-BIT SHIFT
REGISTER
KEY DATA MEMORY
(2 x 16)
TIMING GENERATOR
KEY SCAN
DISPLAY RAM 24-BIT OUTPUT
24 BITS x 12 WORDS LATCH
COMMAND DIMMING
DECODER CIRCUIT
12 13
42 41 40 39 38 37
12 4
GRID
DRIVER
8
8
DATA MULTIPLEXED
SELECTOR DRIVER
8
24 16
SEGMENT
DRIVER
14 15 16 17 18 19
36 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
20 21 22
67