Yamaha EQ-630 User manual

STEREO GRAPHIC EQUALIZER
-
• F~ONT PANEL
" 1
2
151HA~ I &~T
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AJ.. I BiTHEATEA
i-;: JO 60 '?C24U .lac . ?~ J. 8. i~ _EOLEvElIc13
1~~.IIIIIIIIII~ft~;~,.
YAMAHA NATURAL SOUNO GRAPHIC EOUALIZER. EO·630
10 1·0clave BandS
Der Channel
PEE
DOD
DUu
7EJS/EiC
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BI~uEDI
SERVICE MANUAL
YAMAHA
Remote Control Transmitter
IMPORT TonCE
This manual has been provided for the use of authorized Yamaha Retailers and ei se ice personnel. It has been assumed that basic se ice procedures inherant to the
industr
,and more specifically Yamaha Products, are already known and understood bthe users, and ha etherefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result
in personal injury, destruction of expensive components
and failure
of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by
an authorized Yamaha Retailer or the appointed service representative.
IMPORTANT: The presentation or sale
of this manual to any individual or firm does not constitute authorization, certification, recognition of any applicable technical.
capabilities, or establish aprinciple-agent relationship
of any form.
The data provided
is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of Yamaha are continually
striving to improve Yamaha products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any
discrepancy appear to exist, please contact the distributor's Service Division.
WARN ING: Static discharges can destroy expensive components. Discharge any static electrici ty your body may have accumulated by grounding yourself to the ground
buss
in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck
all work before you apply power to the unit.
• CONTENTS
TO SERVICE PERSONNEL ..••••..•••...••.• I
SPECiFiCATIONS .•••••..•••.........••.. I
DIMENSiONS .•••.••••.•.••••..•.•..••.•. I
I
NTERNAL V lEW •.••••..••••••..•....••.. 2
REAR PANELS ••••.••••...••...••....•••. 2
L~THIUM BATTERy •..•••••••••..••...••.. 3
DISASSEMBLY PROCEDURES ••••..•••...••.. 3
IC
BLOCK ..........................•. 4--5
DISPLAY PIN CONNECTIONS 6
WI RING •....•.......................... 7
DISCRIPTIPN OF OPERATIONS 7
BLOCK 0I AGRAM ......................•. 8, q
PR I NTED CI RCU IT BOARD 10 --13
SCHEMATIC DIAGRAM ......•........... 14.15
PARTS LIST 16--20
}1002631
YAMAHA
YAMAHA CORPORATION HAMAMATSU, JAPAN
3.7k-142 ~~Printed in Japan '89.5

INSULATING TABLE
.. ... 105 dB/1V
.... 7V
...... lV
...... Less than 0.005%
EO-630
• TO SERVICE PERSONNEL
1. Critical Components Information. *'
Components having special characteristics are marked ill
and must be replaced with parts having specifioations equal
to those originally installed.
2. Leakage CUrrent Measurement (For 120V Model Only).
When service has been completed, it is imperative that you
verify that all exposed conductive surfaces are properly
insulated from supply circuits.
• Meter impedance should be equivalent to 1500 ohm shunted
by 0.15JJF.
•Leakage
current must not exceed 0.5mA.
•Be sure to test for leakage with the AC plug in both polarities.
• SPECIFICATIONS
Max. Output Voltage
(1 kHz, 0.1% T.H.D)
Rated
Output Voltage
Max.
Inpul Voltage
(1 kHz) 7V
Rated Input Voltage .. .. 1V
Input Impedance ... 47 k-ohms
Frequency Response
... 10Hz - 50 kHz. -1 dB
Center Frequencies ..... 30 Hz. 50 Hz. 120 Hz. 240 Hz. 480 Hz. 1 kHz. 2 kHz.
4 kHz. 8 kHz. 15 kHz.
Equalizer Control Range ± 12 dB
Signal·lo·Noise Ratio (IHF ANetwork)
At 1V
output .
Total Harmonic Distortion
(20 Hz -
20 kHz, 1V oUlput)
EQUIPMENT AC LEAKAGE TESTER
UNDER TEST OR EQUIVALENT
~L ~r===1 ~I: r=4 I
OUTLET
Power Requirements
General
model.. ... 110/120/220/240V. SO/50 Hz
Europe model .. 220V. 50 Hz
Australia and U.K. models 240V. 50 Hz
U.S.A. and Canada models 120V. 50 Hz
Power Consumption .. lOW
Dimensions (W x H x D) 435 x
122 x 271 mm
(17·1/8"x4-13/15"x10-11/15")
Weight ... 3.5 kg (7 Ibs. 11 oz.)
Accessories Pin plug cords (2)
Remote control transmitter (1)
Dry battery
size "AA" (R05) type (2)
Power cord (1 )
Specifications
SUbject to change without notice
• DIMENSIONS
(U)
(C)
(A)
U.S.A. model (B)
Canadian model (G)
Australian model (R)
.
British model
.European model
.General model
1
'ID
,
-
0
;::
N
-
'"
N
~
ojloo 311/16~
435 (17 -I/S"\
311/16 I
\4"
c::=J:::::=J
II
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c:=c::::J
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c:::::::r::::J
-I
~~~~~~~~~~ ~~~~~~~~~U
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c:r:::::::J
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O
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==
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•
.,....
38 {1-1/2"1l.----..
t
3811-1/2"1

• INTERNAL VIEW
•REAR PANELS
• U, Cmodels
EQ-630
«t Power Transformer
~ Lithium Battery(Memory)
~ Main Circuit Board
C» Panel Circuit Board(7)
~ Panel Circuit Board (2)
~ Panel Circuit Board(l)
~ Panel Circuit Board (6)
~ Panel Circuit Board (3)
o Pane 1 Ci rcui t Board (5) : Bottom Si de
4D Panel Ci rcuit Board (4) :Top Side
• A, Bmodels
•Gmodel
•Rmodel
YAMAHA ~g~~~~o
120 VOLTS 10 WATTS 60 HZ
YAMAHA CORPORA~I£~
YAMAHA ~~~~L3~0.
110·120'220'240 VOLTS
10 WATTS 50/60 Hz "v
YAMAHA CORPORATION
MADE IN JAPAN
MAINS
~
MAINS
~
MAINS
~
MAINS
~
2

EO-630
• LITHIUM BATTERY
improper handling. Observe the following precautions
•Never reverse the battery polarities when installing.
• Do not short the batteries.
• Do not attempt to recharge these batteries.
• Do not disassemble the batteries.
•Never heat batteries or throw them into fire.
L1TIUMBATTERI.
Bar endast bytas av servicepersonal.
Explosionsfara vid felaktig hantering.
Swedish
WARNING!
Lithium batteries. Explosion danger.
Change
of batteries must only be done by qualified person-
nel
and as described in the service manual.
English
This product uses a lithium battery for memory back-up.
WARN I NG: Lithium batteries are dangeruus because they can be exploded by
when handling or replacing lithium batteries.
•Leave lithium battery replacement to qualified service
personnel.
• Always replace with batteries of the same type.
•When installing on the PC board, solder using the connection
terminals provided on the battery cells. Never solder directly
to the cells. Perform the soldering as quickly as possible.
Danish Finnish
ADVARSEL!
Lithiumbatterier. Eksplosionsfare.
Udskiftning m~ kun foretages af en sagkyndig og som
beskrevet iservicemanualen.
VAROITUS!
Lithiumparisto. Riijiihdysvaara.
Pariston
saa vaihtaa ainoastaan alan ammattimies.
• DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered)
1. Removal of Top Cover
a. Remove 2screws CD in Fi g. I
b. Remove 3screws GD and slide the Top Cover back.
2. Removal of Front Panel
a. Remove 3screws CD in Fig. I
b. Remove connectors located at 3 place
and pull the Front Panel forward.
• LITHIUM BATTERY REPLACEMENT
Note) Due to the danger of explosion it
is only allowed to use a battery of
the same type and manufacturer
when it has to be shifted.
Wire
wires while pushing
3

EO-630
.IC BLOCK
ICI :
TCql62N(Analog Switch
Array)
'"
'" '"
:E :E :E :E
'"
0
'"
'"
e
on
'"
0
....
0
<I
en en
u
en en en en
u
en
u
I-
""
IIIIIIIIIII <I
..J
a:: a:: a:: a:: a::
a::
a:: a:: a::
a:: a::
0u
IC2.8~IO : NJM4558SD
(Operational Amplifier)
'---~~t1
f2
f3
14
15
16
f7
11";"'~-...J
f2
13
14
15
t6
17
01
eLK 'T--LT""'1r-l"''L.. ..:.. --.Jt-----:-OTEST 2
S
TEST1 '1:==:.... _
J-6-6-~----.....J
8 ~ ~ u
»> >
'"
en '"
i
'"
'"
'"
'"
'"
i
....
..
I- 0
en
I
en
en
en
:E
en en
::<
en
Z
II0II0II0I0
'"
..J ..J
U
..J ..J
U
..J
..J
U
..J
U
II
~
I
..J
..J ..J
IC3.4.7 :
AN7337
IC5.6
: NJU7305L
(Hi-Fi 7-Band
G.E
I C)
(Graphic Equalizer Electronic
variable
resi stor)
!:f
>=
'"
ffi
Z>
~1-
~I-
00
~~
':::>
:t
I-
Zc..
....
....
'"
'"
z
=>
Oz
I
'"
0
~~
z_
u..
;;0
u..
~
ZZ
FUNCTION TABLE
ICI5 ~17 : MN4051BD
(8-channel Analog Multiplexer
Demu 1 ti p1exer)
ICI I ~14 : LA6324N
(Quad Ope-Amp)
V IN'
X.
16 Vuo
X.
+
X~
X6 Xz
15 Xz
V IN'
X,
,4
XI
X, X,
Xo
13 Xo
VIN3+
X~ X~ X3
,2
X3
VIN2-
Inhibit 6Inhibil A
11 A
VEE
a
,0
a
Vss a9
Control Input
ON
~~
B
lj
SW.
I
00
Xo
0 0 II
X,
0II0
Xz
O~
I
X3
~- --+
I , 0 0,
X,
I0I
Xs
II0
X6
I
I I I
X,
x x x -
4

EQ-630
IC402 ""404
(LCD Dri ver)
LC7582B
IC405
IN
Vee
IN
OUT
InpUT
Rz
0\
IN
IN
OUT
GNO
5471AOII
Rsc
r-_-==::;-i-@OUTPut
'-----'¢ 54SIA021
co
.
0.
o
ICI8 : AN78N05
(3-Terminal Voltage Regulater)
8
>
N
,
o
u
,
8
iiii 0--------'
osc
GNO Vee VOIJI
VLCO
5471AOII
S46105PII
54SIA021
544105P21
543
542
541
540
539
538
537
536
53S
534
533
532
51
52
53
54
5S
56
57
58
59
510
511
512
513
514
51S
516
IC406 : GPIU521X
(Remote Control Receptor Unit)
IC401 : HD61408DS
(4-Bit ICHIP MC)
L...------4>--- -<l>--- ~~-- ..... ~ Common
IPin Pin Pin
Pin
I
Function
I/O Name
No. No.
Name
I/O
Function
~ULT I PLEXER CS Rch I 0
011 I 64 010 I 0 Electrooic VR Rch CS
NC
I 0 012 2 63
Dq
I 0
Electrooic VR Lch CS
~ULT I PLEXER CS L &.Rch I 0 013 3 62 08 I 0
Electronic VR DATA
~ULT I PLEXER CS Lch I 0
014
4
61 07 I 0 LC7582 INHi
Electronic VR CLK I 0
DIS 5
60 06
I 0 LC7582 DATA
~ULTIPLEXER DATA A I 0 ROO 6
5q
05 I 0
LC7582 CLK
~ULTIPLEXER DATA B I 0
ROI 7
58
04
I 0
LC7582 CE IRch)
~ULTIPLEXER DATA C I 0 R02 8 57 03 i0 LC7582 CE IL &. Rch)
NC I 0 R03
q
56
02
i0
LC7582 CE (Lch)
TCql62 CLK I 0 RIO
10
55 01 i0
Key Output f I
TCql62 DATA
I 0 RII
II
54 DO i0
Key Output f2
TCq 162 STB 1 0 RI2
12
53 GND i
GND
NC
I 0
RI3 13 52
OSC 2i
OSC
NC I 0 R20
14 51
OSC Ii OSC
NC I 0
R21 15
50 TEST i 5V
NC I 0 R22
16
4q
RESET
i RESET
NC I 0 R23 17 48
Rq3
i
GNO
A/O IN I RAO
18 47
Rq2
i KEY
Input IFuncti on)
GNO IRAI/Vdis Iq
46
Rql
i KEY
Input Lch UP
Power OFF ISecond) i0 R30 20 45
RqO
i KEY Input Lch O~
Muting i0 R31 21 44 R83
0
KEY Output f3
Power OFF IPri mary) : INTO i0 R32/INTO 22 43 R82
0
KEY Output f4.
Remote Control Input i0 R33/INTI 23 42 R81
0
KEY Output f5
8-bit A/D 0 (LSB)
i0
R50 24 41 R80
0
KEY Output f6
8-bit A/O I i 0
R51 25 40 R73
0
KEY Output f7
8-bit A/D 2i0 R52 26
3q
R72 0
KEY Output f8
8-bit A/O 3i0 R53
27
38 R71 0
KEY Output fq
8-bit AID 40 R60 28 37 R70 0
KEY Output flO
8-bit
A/D 50 R61
2q
36 R43 i0 GNO
8-bit A/D 60 R62 3D 35 R42/S0
i0 KEY Input IFuncti on)
8-bit AID 7
I_58)
0
R63 31 34 R41/SI i0 KEY
Input Rch UP
5V
i
Vcc
32 33
R40/SCK
i0 KEY
Input Rch O~
Note) I High Voltage Input
0 High Voltage Output
i Standerd Input
o. .. Standerd Output
5

• DISPLAY Pin Connection
LCD : PSALFD6C80
SEGMENTS
CO ...... ON
A
No. I 2 3 4 5 6 7 8 q
10 II 12 13 14 15
16 17 18
Iq
20 21 22 23 24 25 26 27 28
COM I-
COM
AI3 All
Aq
A7 A5 A3 AI BI2 BIO B8 B6 B4
B2
CI3 CII
Cq
C7 C5
C3
CI 012
010 08 06 04 02
COM 2 COM
-
AI2 AIO A8 A6 A4 A2
BI3 BII
Bq B7 B5 B3
BI CI2 CIO C8 C6 C4
C2
013
011
Oq
07 05 03 01
COM 3- - - - - - - - - - - - - - - - - - - -- - - - - - - -
COM 4- - -- - - - - - - - --- - - - - - -- - - - - - - -
No.
2q
30
31
32 33
34 35 36 37 38
3q
40
41 42 43 44 45 46 47 48
4q
50 51
52 53
54
55 56
COM I EI3 Ell
Eq
E7 E5 E3 EI FI2 FlO F8 F6 F4 F2 GI3 Gil
Gq
G7 G5 G3 GI
COM
- - - - - - -
COM 2E
12
EI0
E8
E6 E4 E2 FI3 FII
Fq F7 F5 F3
FI
GI2 GIO G8 G6
G4
G2
- -
COM
--- - --
COM 3------ - - - - - --- - - - - - - --- COM
EO·REC SOURCE
JI3 J II
COM 4------ - - - - - - - - - - - -- - - -
COM
-
EVER~~
TAPE JI2 JIO
No. 57
58
5q
60
61
62 63
64 65 66 67 68
6q
70 71
72
73 74 75 76
77 78
7q
80
81
COM I---- - - - - - - - - - - - - - - - -- - - - -
COM 2------ - - --- -- - - - - - - -- - - - -
._~
COM 3
Jq
J7 J5 J3 JI
112 110 18 16
14 12 HI3 H II
Hq H7
H5 H3 HI MEt.IO Id Ie Ib If
COM
-
COM 4 J8 J6
J4
J2
113 III
Iq
17 15 13
II HI2 HIO
H8 H6 H4 H2
EO
EQ ON Ie Ig la P-
COM
FLAT
6

EQ-630
• WIRING
1r
.,
PANEL
2II2Circuit Boord
J402
r
-,
J402
II,1
3II3I7l 2II2
4L
.J
4,I
PANEL
J1
3II3
Circuit Boord 151
4L4
J2
r
-,
J2 ...J
1I,,
2II2
MAIN Circuit Boord 3I,3
4II4
5II5
66
7I,7
II
8II8
J403
r
-,
J403
,1
9II92,,2
10 II10
PANEL
3II3
PANEL
11
II
11
Circu" Boord (11
4II4Circuit
Boord (4)
12
L..J
'2
5II5
J3
,r-, 1 J3
II
I6L...J 6
2II2
3,I3
4,I4
5,I5
6II6
7II7
8II8
9II9
10 ,I10
11 11
L
...J
J404
J404
1r
-,
1
,I
J401
J4Ql
2II2
33
I4II4
II
225II5
PANEL
66
337II7Circuit Boord(31
44L
-I
55
J405
J405
66 1 r
.,
1
2II2
3II3
4II4
5,I5
5,'
~1
!,6II6
PANEL Circuit Boord (l)
7II7
II
~5
6,'
LCD Unit'
2:5
~5
8L
-I
8
401 :
a',
81
50
50
J406
r,
H06
1I,
PANEL
22
3,,3Circuit Boord (61
'-
.J
~t
5,1
!1
6:5
LCD Unit
~5
~,
6,5
402
:
:::
81
81 50 50
.DESCRIPTION OF OPERATIONS
(Relationship of Switches)
EO
switch
OFF
ON
EO REC
switch
OFForON OFF
ON
REC _~~
I
I
I
I
II
L...J
PLAY
--0,
I
I
I
I
I I
LJ
REC _!~
I
I
I
EO I
I I
.... .J
I
I
I
EO I
I I
L.. --'
I
I
I
II
L .J
7

EO-630
•BLOCK DIAGRAM
L ...J
ICl
~"~
~
llCl
0
MUTE
~~OLI
Ql
0
~IC1
~
I ~C2(1/2)
@----o ........ ICl R
ch
+"BUFFER
IC8(1/2)
r-17 r
r--
r----v
BUFFER
BPF
Oetector
IC6
~11
-
(1/2)
11 1/4)
0105 IC405
r--
BUm:
....
XO
X
~
BUFFER
RA
IC11t1 14)
0107
12
~
X1
IR5C
...
7~
AG(
IC11(1/4) 0109
13
....
X2
IC3
IC13(1/4)
IC15
BPF
0111 MPX
Bock up I
14
X3
...
BAT. 1I
IC13(1/4)
0113
-.e---
15
....
X4
L
IC11(1/4)
0115
IS
~
X5
....
lCl~4)
0117
.
XS
...,
IC13(1/4)
~
0~9
X7
V
....
IC
~2)
0121
~
XO
V
...
X f--
IC1S{1/2)
IC9(1/2)
MPX
~
0123
....
X1
0.....-
r---
.....
-0 ...
IC7( 1/2)
BPF
IC5 -
..
BAND LEVEL
r
--
-- --
--
--
--
--- ---
--
CONTROL
-- -,
I
YY~-i-i1~
1
~ ~ ~
I
I
REC OUT
TAPE PLAY
LINE OUT
LINE IN
R ch
89

--,
R ch
--,
L ch
IC405
8UFFER
RAO
MUTE
/
R50~53
- R92-
M2 M4 M6
M8 ME~~
EO
EO
7'r7
R60 .... 63
REC
ON/OFF
EO PEAK
IC401
-R42-
M1
M3
M5
M7
TAPE
SOURCE ANALYZE
CURVE
HOLD
REVERS
)J - CO M
-R41-
11
12 13
14
15 16 17
18 19
110
R40",R42 (30Hz)
160Hz) (120Hz) (240Hz) (480Hz) (1kHz) (2kHz) (4kHz) (8kHz)
(16kHz)
UP(+)KEY
Bock up
IR70'"
R92
-R40-
11
12 13
14
15 16
f7
1S 19
110 OOWN(-)KEY
SA .1
I
....c--
-R91-
11
12 13 14 15 16 17 IS 19
110 UPI+IKEY
~
-R90-
11
12 13 14 15
16
17 IS 19
110
OOWN{- )KEY
II
RS3 R1 S2
R~1
R1SO
R~2
R~O
01
DO
R73
R71
IIIIIIIIII
01,00
R70"-73
RSO"'S3
05
06
07
IC406
Remote
Recepter
I~
~~
~I
~
LCD
DRIVER
~
04,5
IC402
f----- LC 0
401
-
---1 RESET I-
r-----------l
LCD -
DRIVER
-
I C404
+5.6V
-
MUT
I-
LCD
_1
DR IVER
LCD
+15V
POWER
POWER SW
402
SUPPLY
Sl
r----
01---06 IC403
+SV
07
06,7
IC1S
3C=D=
-15V
IC5
-SV
OS
BAND LEVEL
CONTROL
-- -,I
f---
I
. __ ...J
]
9

ABcoE
1
2
3
4
5
6
7
• PRINTED CIRCUIT BOARD (Pattern Side) (Note) X*[lij : Component Side
I MAIN Circuit Board I
+
To PANEL Circuif Board (1 )
10

J~ __ E F __ --a...... __ G __ .....&.....-. __ H __ ......a-- ......a..--_
EQ-630
VOLTAGE·
SELECTOR
(R model only)
AC INLET
rd (1)
10
To PANEL Circuit Board (1)
To PANEL Circuit Board (7)
11·

ABcoE
1
2
EQ-630
• PRINTED CIRCUIT BOARD (Pattern Side) (Note) )(*00 : Component Side
Rch
I PANEL Circu it Board (3)I
3
4
5
To 1
PA NEL Circuit
Board (4) YE
r------- From MAIN Circuit Board ---:==L-,------
LCD (Rch)
I PANEL Circuit Board (2) I
8
7
12
ON ....
POWER OFF'"
From PANEL Circu it Board (1)
13

F
Lch
GH
13
REMOTE CONTROL
I PANEL Circuif Board (6) I
AOSt€; ~ A

5
IC11-14
LA6324N
IC15-17
NJU4051BP
or
MN4051B
or HD 14051 BP
5or BU4051 B
IC18
HAI7805
or uPC78M05H
or AN78N05
01,2
25C2878
or 25D1915ST
03
25A933
r--,
or 25A1309
I
04
25C1740
I
or 2SC3311 I
I
Z101
05
DTA114TSTP I
220K x7
UN4115 L
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or
06
25D2012
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or 2501762
~
~
~
0000
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l.D
6Q7
2S81375
or 2581185
D 1-..4,9 RLI N4003-N02
D5,6
HZ515-3TD
or MA4150M
D7,8
HZ59A2TD
or
MA4082M
D 10--15,
101",,124 155119 -04
~
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or 15S178
~
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..,.
BAT 1SUMM2CC200
or CR2032/1VC
o~
7
(\I,...
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B
9
• PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODE AND ICS.
E~
E'
~
1~
B .
10
1
BE1 .
23
25AI30Q
25C3311
2502012
25C2878A
'UN4215 (OTA 114)
2581375
AN78N05
Ii- PC3Q3
LA6324N
MN~

ABco
• SCHEMATIC DIAGRAM
'1
I
----1>-- LIN
SPI
-----------
U,C ,R,A,B
G
.*. 1
R10f,102 1Kfi
SHORT
'*'2
C61,62,65,66,
OPEN
220pF
69,70,73,74
.*. 3R101,102 SHORT
1KO
1
Lch
LINE IN
14.7
-14.8
Rch
2
Lch
LINE OUT
Rch
Lch
REC OUT
C)
Rch
Lch
3PLAY
BACK
Rch
,-------
I
I
I
-I
I
I
I
L ~~d.:!. ___
4
IC 1TC9162
IC 2,8,9,10
NJM4558S0
or AN6555
or TA75559S -1
IC 3,4,7
AN7337
IC5,6
NJU7305
IC11-..14
LA6324N
IC 15"'17
NJU4051BP
or MN4051B
or HD 14051 BP
5
or BU4051B
IC18
HAI7805
or uPC78M05H
or AN78N05
a 1,2
2SC2878
or
2S01915ST
a3
25A933
or
2SA1309
a4
2SC1740
or
2SC3311
a5
OTA 114TSTP
or
UN4115
a6
2502012
xxxN
or 2S01762
x000X
::I:
~
CD
~
~
0
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v
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6Q7
2SB1375
or
25B 1185
I
01-..4,9
RLIN4003-N02
ns:;. t::.
U7~1~-~Tn

:,
.!
~
R230
f~OK
Rf9
10K
R20
15K
R1f (1l
3.3K 013 0
RCH 4KHz
LCH 4KHz
LCH 16KHz
LCH 8KHz
RCH 16KHz
RCH 8KHz rIDlm""
I I
I I
L ...J
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00
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R262
8.2K
+
R266
27K
C266
1/50
R246 27K
C246
2.2/50
R250
150K
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c0
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C226
3.3/501
0110
:t Bz. I" , ~

MAIN
J2
1
RESET 2
RCH VOL S3
lCH VOL
4
VOL 05
VOL ClK
6
7
8
INT 9
VCC
10
lUMP
11
lUMP
12
I/O SW
I/O SW
I/O SW
PANEL(7)
C18
lO.022
AC120V 60Hz: u,e
AC220V 50Hz: G
AC240V 50Hz: A, B
AC110,
120,220, 240V : R
50/60Hz
&
r---,
I 240V
I
I
I
I
I
I
L -!!.'_J
R model only
J1
1
2
3.....----f-+--+...J
41----+-+-.....1
R303
10K
J1
,.........----_-+-I-~-~ 1
2
-+ .............. ----+----4II~-------------------_4_4_----...:.:-___4~--___I3
R1710K
e-..J,N~-44
CAUTION
• Components having SJ
replaced with parts ha
*All voltages are measur
*Schematic diagram is s
HD614080S

A
c..
I
I
CD
~
R219
150K
..---=-: ...... -
R209
l~OK
R232
8.2K
R236
27K
+
C236
3.3/~O
+
R20668K
C206
4.713~
_::0
001
~o
~
R2
'~OK
1~li lil~
(I)
~~~~
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