Yamaha P 85 Service Manual

11 P-85/P-85S

 

P-85/P-85S
12
[270B]
A-1 Key
¢d£
B-1 Key
¢#d£One octave
¢¦«»”Ò£
(C0–B0) [270A][270A][270A][270A][270A][270A][270A] [270C]
C7 Key
¢$d£
One octave
¢¦«»”Ò£
(C1–B1)One octave
¢¦«»”Ò£
(C2–B2)One octave
¢¦«»”Ò£
(C3–B3)One octave
¢¦«»”Ò£
(C4–B4)One octave
¢¦«»”Ò£
(C5–B5)One octave
¢¦«»”Ò£
(C6–B6)
• Keyboard  assembly

Fig. 12


¢
$ £ 
#JOE
)FBE
5BQQJOH
4DSFX1

13 P-85/P-85S
One octave
¢¦«»”Ò£
(C–B)One octave
¢¦«»”Ò£
(C–B)
One octave
¢¦«»”Ò£
(C#–C)
Rubber contact
¢
€:°Ü£Key
¢d
k£
[260A] Rubber contact
¢
€:°Ü£
[260B] [260C]
Rubber contact
¢
€:°Ü£
Rubber contact
¢
€:°Ü£
Rubber contact
¢
€:°Ü£
Rubber contact
¢
€:°Ü£Rubber contact
¢
€:°Ü£
Rubber contact
¢
€:°Ü£Rubber contact
¢
€:°Ü£
GHL88HGHL88MGHL88L
• Keyboard  assembly

Fig. 15


¢
$ £ 

Fig. 15-1


¢
$ £...

P-85/P-85S
14
GHL88M
FFC cable
¢$­”Òç£
Frame
¢Ñè”Ü£
FFC cable
¢$­”Òç£Filament tape
¢ÑŸåÝïÄ”ӣ,FZCPBSE
BTTFNCMZ
¢()-
	()4

d
kTTZ£
CN2 (27P)GHL88MCN2
(27P) Through hole
¢è`@£
Filament tape
¢ÑŸåÝïÄ”ӣ
 assembly

Fig. 16


¢
$ £
12-6 GHL88L Circuit Board 
  Remove the black and white key assembly (A-1 – 
B2). (See procedure 12-1)
  Remove the six (6) screws marked [260A]. The 
GHL88L circuit board can then be removed. (Fig. 15)
12-7 GHL88M Circuit...

15 P-85/P-85S

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P-85/P-85S
16
Frame
¢d
kÑè”Ü£Hammer, white key
¢ËïÚ”¢
(d££
Hammer, black key
¢ËïÚ”¢d££ Hammer axis
¢ËïÚ”à£Bottom side¢ØÄÜ£
Pull forward¢	
²t¾X£
Bearing section¢à	!Z
æ£
Apply grease
¢¬æµC
Í£
Fig. 19


¢
$ £
• Keyboard  assembly

13.  Assembling the Keyboard Assembly
13-1 Hammer (White Key), (Black Key)
  After applying grease to the bearing section of 
the hammer, bring the hammer (white key) (black 
key) sideways from the rear, fi t its bearing...

17 P-85/P-85S
Rubber contact
¢
€:°Ü£Rubber contact
¢
€:°Ü£GHL88L
Triangle mark
¢~¯Ú”«£Triangle mark
¢~¯Ú”«£ Front
¢ÑéïÄ£
Rubber contact
¢
€:°Ü£Clip
¢«æ¿Ó£GHL88L
Fig. 20


¢
$ £Fig. 21


¢
$ £

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P-85/P-85S
18


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19 P-85/P-85S
PIN
NO.I/O FUNCTION NAMEPIN
NO.I/O FUNCTION NAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22P12
P11
P10
P47/KR7
P46/KR6
P45/KR5
P44/KR4
P43/KR3
P42/KR2
P41/KR1
P40/KR0
NC
IC
X2
X1
VSS0
VDD0
/RESET
P53
P52
P51/TO2
P50/TI0/TO0
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
-
-
I
-
-
I
I/O
I/O
I/O
I/OPort 1
Port 4/Key return signal detection input
Internally connected (N.C.)
Clock
Ground
Power supply
System reset
Port 5
Port 5/16-bit timer output
Port 5/External count clock input...

P-85/P-85S
20
PIN
NO.I/O FUNCTION NAMEPIN
NO.I/O FUNCTION NAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64Vss
TESTNPLLBPN
PLLVDDCIN
PLLVss
TRSTN
TMS
TCK
TDI
TDO
XI
XO
Vss
V
DDICN
ECSN
EWRN/PD5ERDN/PD4EA3/PD3
EA2/PD2
EA1/PD1
EA0/PD0
IOV
DDED0/PC0
ED1/PC1
ED2/PC2
ED3/PC3
ED4/PC4
ED5/PC5
ED6/PC6
ED7/PC7
VssIRQ0N/PH0TxD0
RxD0
TxD1/PG2RxD1/PH1SCLK1/PH2SDO
SDI/PH3
BCLK...