Yamaha DVR-S60 Service Manual page 51

IC601 uPD16311GC-AB6 (1/8 to 1/16-Duty FIP(VFD) Controller/Driver
Command Decoder
DIN 6
DOUT 5
Display memory
Serial
20 bitx16 word
I/F
CLK 8
STB 9
Timing generator
14
VDD OSC
key scan
Key data
memory (4x12)
Key1
to 10~13
4
Key4
5-bit latch
SW1
to 1~4
4
SW4
50
LED1
FRONT P.C.B.
Dimming
circuit
20 12
8
8
8
8
16
46 33 51 34
LED5 VDD VSS VEE
(+5V) (0V) (-30V)
52 51 50 49 48 47 46 45 44 43 42
SW1
1
15 Seg1
SW2 2
SW3
3
SW4 4
26 Seg12
DOUT 5
DIN 6
27 Seg13/Grid16
IC 7
CLK 8
STB 9
Seg20/Grid9
36
YEY1
10
KEY2 11
KEY3 12
Grid1
44
KEY4 13
14 15 16 17 18 19 20 21 22 23 24
37
Grid8
µ
±
DVR-S60/NX-SW60
41 40
Grid6
39
38 Grid7
Grid8
37
36 Seg20/Grid9
35 Seg19/Grid10
34 VEE
33 VDD
32 Seg18/Drid11
31 Seg17/Grid12
Seg16/Grid13
30
29 Seg15/Geig14
28 Seg14/Grid15
27 Seg13/Grid16
25 26
51