Yamaha Clavinova CVP-105, Руководство по обслуживанию

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CVP-105
16
1 VA5 O 31 XD2 O
2 VA4 O 32 XD1 O Data bus output for 4 bit dot
3 VA3 O
VRAM address bus
33 XD0 O
4 VA2 O 34 XECL O S driver enable, chain clock
5 VA1 O 35 XSCL O Data bus shift clock
6 VA0 O 36 Vss - Ground
7 /VWR O VRAM read/write 37 LP O X driver latch pulse
8 /VCE O Memory control 38 WF O Frame signal for X/Y driver
9 /VRD - Not used 39 YDIS O
Power down signal for displaying off mode
10 /RES I Initial clear 40 YD O Scan start signal
11 NC - Not used 41 YSCL O Scan shift clock
12 NC - Not used 42 VD7 I/O
13 /RD I Read strobe 43 VD6 I/O
14 /WR I Write strobe 44 VD5 I/O
15 SEL2 I Bus select 45 VD4 I/O
VRAM data bus
16 SEL1 I Bus select 46 VD3 I/O
17 OSC1 I Clock 47 VD2 I/O
18 OSC2 O Clock 48 VD1 I/O
19 /CS I Chip select 49 VD0 I/O
20 A0 I Data mode select 50 VA15 O
21 Vdd - Power supply 51 VA14 O
22 D0 I/O 52 VA13 O
23 D1 I/O 53 VA12 O
24 D2 I/O 54 VA11 O
VRAM address bus
25 D3 I/O
Data bus
55 VA10 O
26 D4 I/O 56 VA9 O
27 D5 I/O 57 VA8 O
28 D6 I/O 58 VA7 O
29 D7 I/O 59 VA6 O
30 XD3 O Data bus output for 4 bit dot 60 NC - Not used
SED1335F0B (XQ595A00) LCDC (LCD Controller)
PIN
NO.
NAME I/O FUNCTION
PIN
NO.
NAME I/O FUNCTION
DM : IC600
1 O 21 GND Ground
2 BK4 O 22 VDD Power supply
3 BK3 O
Key block (open drein)
23 SO O Serial data
4 BK2 O ACK I Acknowledge/ mode select
5 BK1 O 25 XCK I Cloc k for serial data
6 BK0 O 26 /IC I Ini tial clear
7 MK15 I 27 TST1 I Test mode
8 MK14 I 28 TST2 I (L,L: normal mode, others: test)
9 MK13 I
Firs t make contact
29 XCKINH I Inhibit of serial clock
10 MK12 I 30 BK1 4 O
11 MK11 I 31 BK1 3 O
12 MK10 I 32 BK1 2 O
13 MK05 I 33 BK1 1 O
Key block (open drein)
14 MK04 I 34 BK1 0 O
15 MK03 I
Second make contact
35 O
16 MK02 I 36 BK8
BK9
O
17 MK01 I 37 BK7 O
18 MK00 I 38 BK6 O
19 XIN I Crystal osc. input (4 MHz) 39 GND Ground
20 XOUT O Crystal osc. out put (4 MHz) 40 VDD Power supply
YMZ702-D (XR632A00) KSN2 (Key Scanner)
PIN
NO.
NAME I/O FUNCTION
PIN
NO.
NAME I/O FUNCTION
AEXL88L : IC1
BK5
24