METER COM
METER R+
METER L+
A
C
26V
-38V
+38V
GND
Lc
hA
Lc
hG
RchG
RchA
Lc
h
LG
N
D
Rch
RGND
G
1
O1
2
H1
3
I1
4
V-
5
I2
6
H2
7
O2
8
V+
9
IC1
TA7318P-2
OL
1
CV
2
LH
3
AC
4
G
5
RD
6
MT
7
VC
8
IC2
UPC1237HA
330
n
C8
330n
C3
2W
1.8k
R9
2W
1.8k
R22
2W
10
R1
2W
10
R2
22n
C1
2W
10
R6
2W
10
R5
22n
C2
D3 MA167
4.7u
35V
C5
D1
MA165
L2
506-0008-00
L1
506-0008
-00
to Power amp Ass'y K3
GND
TH
1n
C9
1
2
3
4
K3
308-0408-00
D2
MA165
Lc
hB
RchB
2W
270
R4
2W
270
R3
SPB
SPA
METER_MUTE
X1
RN2203
X2
RN2203
1
2
3
4
5
6
K4
308-0606-00
220
R18
220
R14
4.7M
R16
4.
7M
R1
3
7.5k
R10
7.5k
R15
47k
R11
47k
R17
36k
R8
36k
R7
100k
R21
75k
R12
12k
R20
22k
R23
3
2
1
100k
VR1
583-0154-00
3
2
1
100k
VR3
583-0154-00
100k
R1
9
220u
10V
C7
22n
C6
to M
othe
rb
oard Ass'y K1
to Rectifier K2
to Balance Ass'y K1
1
2
K1
308
-021
2-
00
LG
N
D
RGND
to Rectifier K2
1
2
K2
308-0214-00
1
2
K5
308-0206-00
22u
16V
C4
-GR
Q1
2SC2458_
-GR
Q2
2SC2458_
X3
RN1202
27k
R24
(GRN)
(YEL)
(ORG)
(BLU)
(BLK)
(GRY)
to Speaker terminals
to
Th
er
m
isto
r
1
2
K6
308-0239-00
P1
P3
P6
P2
P4
P5
2
5
1
6
3
4
RELAY1
362-2230-00
2
5
1
6
3
4
RELAY2
362-2230-00
3
2
1
1k
VR2
583-0134-00
3
2
1
1k
VR4
583-0134-00
-
2
9
-
P R O T E C T I O N A S S ' Y
LED_EXTPRE
LED_MONI
LED_REC
LED_TONE
LED_MONO
LED_COMP
LED_ATN
LED_MC
LED_EXTPRE
LED_MONI
LED_REC
LED_TONE
LED_MONO
LED_COMP
LED_ATN
LED_MC
from Meter Lamp (K3)
1
2
3
4
5
6
7
8
9
K1
308-0905-00
D1
BR1111R-B/C/D/E
D2
BR1111R-B/C/D/E
D3
BR1111R-B/C/D/E
D4
BR1111R-B/C/D/E
D5
BR1111R-B/C/D/E
D6
BR1111R-B/C/D/E
D7
BR1111R-B/C/D/E
D8
BR1111R-B/C/D/E
D I S P L A Y A S S ' Y
( 7 2 3 - 0 1 1 6 - 0 0 )
X1
RN1204
X2
RN1204
/LED_B
/LED_A
LED_4
LED_1
LED_3
LED_2
/LED_B
/LED_A
LED_B
LED_A
100n
C1
VCC
LED_4
LED_1
LED_3
LED_2
LED_B
LED_A
/CLRLED
/STBLED
SCLK
SDATA
LED_EXTPRE
LED_MONI
LED_REC
LED_TONE
LED_MONO
LED_COMP
LED_ATN
LED_LOGO
1k
R1
220p
C2
1k
R2
220p
C3
EN_LED
/LATLED
SCLK
SDATA
VCC
/RCON
1
2
3
4
5
6
7
8
9
K2
280-9009-00
METER_LAMP
METER_LAMP
PL1
176-4501-10
PL2
176-4501-10
PL3
176-4501-10
PL4
176-4501-10
LED_MC
1k
R7
1k
R3
1k
R8
1k
R4
1k
R9
1k
R5
1k
R10
1k
R6
LED_LOGO
/RCON
VCC
to Display (K1)
to Receiver (K1)
to
S
ele
ct
or LED (K1
)
from Logic (K2)
AC6V_1
AC6V_2
Q1
2SK2541_
X3
RN2226
Q2
2SK2541_
X4
RN2226
METER_LAMP
1
2
3
4
5
6
K1
308-0609-00
1
2
3
4
K4
309-3462-04
1
2
3
4
5
6
7
8
9
K3
309-0962-04
47u 35V
C4
D2
1SR139-400
D1
1SR139-400
1.00F
R11
1.00F
R12
1
2
3
K1
308-0308-00
1
2
3
4
K3
308-0411-00
to Power AMP Ass'y(L) K3
to Power AMP Ass'y (R) K3
to Transformer
to Protection Ass'y K3,6
+B
GND
-B
+B
GND
-B
GND
GND
AC
AC
GND
GND
+B
-B
GND
1
2
3
4
5
6
K2
308-0608-00
AC
D1
S10VB20
250V
10n
C5
250V
10n
C7
250V
100n
C6
1
2
3
K4
308-0321-00
10000u
50V
C2
10000u
50V
C4
10000u
50V
C9
10000u
50V
C11
10000u
50V
C1
10000u
50V
C3
10000u
50V
C8
10000u
50V
C10
34.5V
-34.5V
( 7 2 0 - 0 0 7 5 - 0 0 )
P O W E R S U P P L Y A S S ' Y ( 7 1 9 - 0 0 5 8 - 0 0 )
M E T E R L A M P A S S ' Y
( 7 2 3 - 0 1 1 7 - 0 0 )
Summary of Contents for E-550
Page 32: ...31 BLOCK DIAGRAM...