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Yamaha P 85 Service Manual

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    Page 71

    Page 71 Note: See parts list for details of circuit board component parts. «³”Äw æ ¼ ÄIxÍ”ÀæµÄ›]€ °Xi^M{ WARNING Components having special characteristics are marked and must be replaced with parts having specifi cation equal to those originally installed. ¹w æ ¼xz† ¶›¡Ëb”hŠt OAs æ ¼pb{¦õb” Ôùxz† ¶whŠt žc ¦ w æ ¼›]–;Xi^M{ CIRCUIT DIAGRAM BLOCK DIAGRAM & WIRING¢Òé¿«¼ ž¬åÜA ¢ $£ ... 3 CIRCUIT DIAGRAM¢sÏ $£ %.... 
    Note: See parts list for details of circuit board component parts.
«³”Äw
æ
¼	ÄIxÍ”ÀæµÄ›]€	°Xi^M{
 WARNING
Components having special characteristics are marked  and must be replaced with parts 
having specifi cation equal to those originally installed.
 ¹w
æ
¼xz†
¶›¡Ëb”hŠt	OAs
æ
¼pb{¦õb”	Ôùxz†
¶whŠt
žc
¦w
æ
¼›]–;Xi^M{
CIRCUIT DIAGRAM
BLOCK DIAGRAM & WIRING¢Òé¿«¼ ž¬åÜA
¢
$£  ... 3
CIRCUIT DIAGRAM¢sÏ
$£
%....

    Page 72

    Page 72 1 2 3 4 5 6 A BCDEFGH P-85/P-85SBLOCK DIAGRAM & WIRING BLOCK DIAGRAM & WIRING 28CA1-2001022995-1 3 1 LD x 3 GHS 88Keys 5MHz SYSTEM RESET +3.6V OSC ADC DAC 24bitLPF REGULATOR+3.3V REGULATOR+5VREGULATOR+5V REGULATOR+2.5V CPU (SWL01T) SLAVE CPU (SWL01T) MASTER FLASH ROM 64M Program WAVE FLASH ROM 32M Program WAVE FLASH ROM 4M DRAM 4MCPU (MKS) UPD789022GB 17, 38 14, 15, 18 5 4 12 12 4 16 24, 47, 66, 90, 12029 37 38 39 12 12 1640, 44, 42, 43 57, 58, 63 49 48 50 26 51 35, 36 421-414 2 6 10 78 8 8 411 14... 
    1
2
3
4
5
6 A
BCDEFGH
P-85/P-85SBLOCK DIAGRAM & WIRING
BLOCK DIAGRAM & WIRING
28CA1-2001022995-1
3
1


LD x 3 GHS   88Keys
5MHz
SYSTEM
RESET
+3.6V
OSC
ADC DAC
24bitLPF
REGULATOR+3.3V
REGULATOR+5VREGULATOR+5V
REGULATOR+2.5V
 CPU (SWL01T)
SLAVE  CPU (SWL01T)
MASTER
FLASH ROM 64M
Program WAVE
FLASH ROM 32M
Program WAVE FLASH ROM
4M
DRAM 4MCPU (MKS)
UPD789022GB
17, 38
14, 15, 
18
5
4
12
12 4
16
24, 47, 66, 90, 12029 37 38 39
12
12
1640, 44,
42, 43 57, 58, 63
49
48
50
26
51
35, 36
421-414
2
6 10 78
8 8
411 14...

    Page 73

    Page 73 ABCDEFG H 1 2 3 4 5 6 P-85/P-85SDM CIRCUIT DIAGRAM DM CIRCUIT DIAGRAM28CC1-2001022991-1 4 BA33BC0FP (X5889A00) REGULATOR +3.3V DM: IC501 1. INPUT 2. GND 3. OUTPUT12 3 RH5RZ25CA-T1-F (X3679A00)REGULATOR +2.5VDM: IC502 1. GND 2. INPUT 3. OUTPUT 1 2 3 1SS355 TE-17 (VT332900) DIODE DM: D501-509 1: ANODE 2: CATHODE 1 2 UDZS6.8BTE-17 (VU172200)ZENER DIODE 6.8VDM: ZD1 1: ANODE 2: CATHODE 1 2 2SC2412K(VV556400) TRANSISTOR DM: TR501 1 23 1: EMITTER 2: BASE 3: COLLECTOR1 23 SYSTEM RESET CPU (SWL01T) ADC CPU... 
    ABCDEFG H
1
2
3
4
5
6
P-85/P-85SDM CIRCUIT DIAGRAM
DM CIRCUIT DIAGRAM28CC1-2001022991-1 4
BA33BC0FP (X5889A00)
REGULATOR +3.3V
DM: IC501
1. INPUT
2. GND
3. OUTPUT12
3
RH5RZ25CA-T1-F (X3679A00)REGULATOR +2.5VDM: IC502
1. GND
2. INPUT
3. OUTPUT
1
2
3
1SS355 TE-17 (VT332900)
DIODE
DM: D501-509
1: ANODE
2: CATHODE
1
2
UDZS6.8BTE-17 (VU172200)ZENER DIODE 6.8VDM: ZD1
1: ANODE
2: CATHODE
1
2
2SC2412K(VV556400)
TRANSISTOR
DM: TR501
1 23
1: EMITTER
2: BASE
3: COLLECTOR1 23
SYSTEM RESET
CPU (SWL01T)
ADC
CPU...

    Page 74

    Page 74 1 2 3 4 5 6 A BCDEFGH P-85/P-85SAM, HP, JK, PN1, PN2, PEDAL CIRCUIT DIAGRAM AM, HP, JK, PN1, PN2, PEDAL CIRCUIT DIAGRAM28CC1-2001022994-15 PEDAL 28CC1-2001015873 Photo CouplerOP AMP OP AMP REGULATOR +5V REGULATOR +5V OP AMPPOWER AMP. 6W+6W PN1 JK AM HP PN2 : Ceramic Capacitor ¢·åÛ¿«¯ïÃï±”£ : Mylar Capacitor ¢Ú å”¯ïÃï±”£ : Semiconduct Ceramic Capacitor ¢ R ‹ .·åÛ¿«¯ïÃï±”£ to DM-CN602 to DM-CN501 to DM-CN601 Note : See parts list for details of circuit board... 
    1
2
3
4
5
6 A
BCDEFGH
P-85/P-85SAM, HP, JK, PN1, PN2, PEDAL CIRCUIT DIAGRAM
AM, HP, JK, PN1, PN2, PEDAL CIRCUIT DIAGRAM28CC1-2001022994-15
PEDAL
28CC1-2001015873
Photo CouplerOP AMP OP AMP
REGULATOR +5V
REGULATOR +5V OP AMPPOWER AMP. 6W+6W
PN1
JK
AM
HP
PN2
:  Ceramic Capacitor
¢·åÛ¿«¯ïÃï±”£
: Mylar Capacitor
¢Ú å”¯ïÃï±”£
: Semiconduct Ceramic Capacitor
¢
R‹.·åÛ¿«¯ïÃï±”£
to DM-CN602

to DM-CN501

to DM-CN601

Note : See parts list for details of circuit board...

    Page 75

    Page 75 ABCDEFG H 1 2 3 4 5 6 P-85/P-85SGHL88H, GHL88L, GHL88M CIRCUIT DIAGRAM (P-85/P-85S) GHL88H, GHL88L, GHL88M CIRCUIT DIAGRAM (P-85/P-85S)6 GHL88H GHL88M GHL88L Keyboard Type 28CC1-2000006192 28CC1-2000006194 28CC1-2000006193 2 Note : See parts list for details of circuit board component parts.  
    ABCDEFG H
1
2
3
4
5
6
P-85/P-85SGHL88H, GHL88L, GHL88M CIRCUIT DIAGRAM (P-85/P-85S)
GHL88H, GHL88L, GHL88M CIRCUIT DIAGRAM (P-85/P-85S)6
GHL88H
GHL88M
GHL88L
Keyboard Type
28CC1-2000006192
28CC1-2000006194 28CC1-2000006193
2
Note : See parts list for details of circuit board
    component parts.  

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