Roland V-Accordion FR-8x Service Notes page 72

July 2013
CIRCUIT BOARD
ASSY 7783604000
CIRCUIT DIAGRAM (LCD)
D+3.3V
L1
EXCML16A270U
R41 R40
C20
10K 10K
100pF
C1
100nF
C15
NIU
C16
NIU
D+5V LCDXRST
L6
D
EXCML16A270U
LCD1CS
LCD2CS
CN1 1
LCD1RS
2
FI-SE20P-HFE LCD2RS
3
4
LCD1XEP
5
LCD2XEP
6
7
BKLON
8
9
TO
LCD1DB0
10 1 8
LCD1DB1
JACK B. 11 2 7
LCD1DB2
12 3 6
LCD1DB3
(CN3) 13 4 5
LCD1DB4
14 1 8
LCD1DB5
15 2 7
LCD1DB6
16 3 6
LCD1DB7
17 4 5
18
19
RA1A
20
RA1B
RA1C
C18 RA1D
100nF RA3A
RA3B
D D
RA3C
RA3D
4 5
3 6 RA10A
RA10B
2 7
1 8 RA10C
CA1 RA10D
NIU RA11A
RA11B
4 5 RA11C
RA11D
3 6
2 7 1 8 LCD2DB10
LCD2DB11
1 8 2 7
LCD2DB12
CA2 3 6
NIU LCD2DB13
4 5
LCD2DB14
1 8
D
LCD2DB15
2 7
LCD2DB16
3 6
LCD2DB17
4 5
1206
R37
D+3.3V R35 +VBL D+3.3V 0 ohm IOVCC
NIU 1206
D+5V R48
0 ohm D3 D3
NIU NIU
C14 C14
22uF 22uF
D D
96
(LCD)
View from component side
(2nd source)
IOVCC
IM3 IM0
8080 x8bit 0 1
R11 22
R15 NIU
R18 22 IOVCC
R22
R20 0 NIU
R19 NIU 10K NIU IM3
R21 22 IM0
R16 NIU RDX
D
R17 22 LCD1XEP WRX
R45 22 LCD1RS D/CX
LCD1DB[0..17]
LCDXRST RESX
LCD1CS CSX
RA2A LCD1DB8 LCD1DB0 DB0
1 8
LCD1DB9 LCD1DB1
RA2B 2 7 DB1
RA2C LCD1DB10 LCD1DB2 DB2
3 6
LCD1DB11 LCD1DB3
RA2D 4 5 DB3
RA5A LCD1DB12 LCD1DB4 DB4
1 8
LCD1DB13 LCD1DB5
RA5B 2 7 DB5
RA5C LCD1DB14 LCD1DB6 DB6
3 6
LCD1DB15 LCD1DB7
RA5D 4 5 DB7
RA7A LCD1DB16 LCD1DB8 DB8
1 8
LCD1DB17 LCD1DB9
RA7B 2 7 DB9
22 ohm NIU RA7C LCD1DB10 DB10
3 6
LCD1DB11
22 ohm NIU RA7D 4 5 DB11
22 ohm NIU LCD1DB12 DB12
LCD1DB13
22 ohm NIU DB13
NIU
22 ohm NIU LCD1DB14 DB14
D
LCD1DB15
22 ohm NIU L3 NIU DB15
22 ohm NIU L2 NIU LCD1DB16 DB16
LCD1DB17
22 ohm NIU IOVCC IOVCC BLM18BD252SN1D DB17
BLM18BD252SN1D VDDI
22 ohm VDD
22 ohm VDD
22 ohm LED-
22 ohm C3 C3 C5 C5 LED1+
22 ohm 10uF 10uF 10uF 10uF LED2+
22 ohm NIU NIU NIU NIU LED3+
22 ohm LED4+
22 ohm C6 C6 C7 C7
D D
100nF 100nF 100nF 100nF IC2 IC2
+VBL NIU NIU NIU NIU TPS75105DSK TPS75105DSK
NIU NIU
9 3
VIN D1A
4
D2A
C19 C19 BKLON
2 8
ENA D1B
NIU NIU 1 7
ENB D2B
5
GND
D 11
GNDpad
R46 R46 68K 68K 1% 10 6
Iset NC
R47 R47 68K 68K
1%
NIU NIU
D
NIU NIU
LCD2DB[0..17]
C11
22uF
R42
NIU
D
+VBL IC1
CAT4004A
8 3
VIN LED1
4
LED2
C17 BKLON
1 5
EN LED3
1uF
6
LED4
2
GND
9
TAB
D
7
RSET
CN2 R44 10K 1%
FF02S-40SV1 R43 10K 1%
D
R12 NIU NIU
IOVCC
10K 1
NIU
2
3 RA12B 10K 2 7
RA12A 10K
4 1 8
5 RA12C 10K 3 6
RA12D 10K
6 4 5
7
8 D
IOVCC
9
10
RA4A 10K VSYNC
11 1 8
RA4B 10K HSYNC
12 2 7
13 RA4C 10K 3 6 DOTCK
RA4D 10K ENABLE
14 4 5
LCD2DB17
15
RA6A LCD2DB9 LCD2DB16
16 1 8
LCD2DB8 LCD2DB15
17 RA6B 2 7
RA6C LCD2DB7 LCD2DB14
18 3 6
LCD2DB6 LCD2DB13
19 RA6D 4 5
RA8A LCD2DB5 LCD2DB12
20 1 8
LCD2DB4 LCD2DB11
21 RA8B 2 7
RA8C LCD2DB3 LCD2DB10
22 3 6
LCD2DB2 LCD2DB9
23 RA8D 4 5
RA9A LCD2DB1 LCD2DB8
24 1 8
LCD2DB0 LCD2DB7
25 RA9B 2 7
RA9C LCD2DB6
26 3 6
LCD2DB5
27 RA9D 4 5
LCD2DB4
28
10K LCD2DB3
29 IOVCC
LCD2DB2
30 D
LCD2DB1
31
C2 LCD2DB0
32
33 10uF
C4 LCD2CS
34
LCD2RS
35 100nF IOVCC
R23 LCD2XEP
36 D
37 10K
IOVCC D+3.3V R24 LCDXRST
38
39 10K
40
L4 L4
NIU C8
L5 10uF
BLM18BD252SN1D
D
IM3 IM2 IM1 IM0
8080 x8bit 0 0 1 1
CN3
FPC6AMR1-41GNR-U
LED4- TP1 TP1
1
1
LED3- TP2 TP2
2
2
LED2- 3 TP3 TP3
3
LED1- TP4 TP4
4
4
LED+ 5 TP5 TP5
5
IM0 TP6 TP6
6
6
IM1 7 TP7 TP7
7
IM2 TP8 TP8
8
8
IM3 TP9 TP9
9
9
TP10 TP10
10
10
TP11 TP11
11
11
TP12 TP12
12
12
13 TP13 TP13
13
TP14 TP14
14
14
DB17 15 TP15 TP15
15
DB16 TP16 TP16
16
16
DB15 17 TP17 TP17
17
DB14 TP18 TP18
18
18
DB13 19 TP19 TP19
19
DB12 TP20 TP20
20
20
DB11 21 TP21 TP21
21
DB10 TP22 TP22
22
22
DB9 23 TP23 TP23
23
DB8 TP24 TP24
24
24
DB7 25 TP25 TP25
25
DB6 TP26 TP26
26
26
DB5 27 TP27 TP27
27
DB4 TP28 TP28
28
28
DB3 29 TP29 TP29
29
DB2 TP30 TP30
30
30
DB1 31 TP31 TP31
31
DB0 TP32 TP32
32
32
33 TP33 TP33
33
TP34 TP34
34
34
35 TP35 TP35
35
TP36 TP36
36
36
RD 37 TP37 TP37
37
TP38 TP38
38
38
SDI 39 TP39 TP39
39
TP40 TP40
40
40
41 TP41 TP41
41
C9
100nF
D D
FR-8X/XD
97