Mark Levinson no 23 schematic
=============================================================================================
white
XLR-Cannon
connector fem.
bal input
+
2
-
3
1
o
=== ===
shorting
strap
black
green
10n KP
Camac
fem
=============
P1
Chassis
470n MKS
on board
0 Ohm
100p KP
100
to Mainboard Poweramp
white, non invert.
100p KP
Mark Levinson No 23
inputconnector-unit
allocated on
inputconnector-board
black
to Mainboard Poweramp
green
to Mainboard Poweramp
but n.c. there
blue
U1 U1
U1
U1
U1 U1U1U1
1N4003
1K
1N4003
100p KP
U5
U1U1
1K
470n MKS
1N4003
10K
1K
100
10K
10K
2N5401
2N5551
100p KP
20K
blue, invert.
to Mainboard Poweramp
black
Heatsink I
Heatsink II
+86V
100n ker
16K2
red
yellow
to Relay-driver
1N4003
Mark Levinson No 23
DC-Protection and
thermoprotect.-unit,
allocated on input
connector board
SPK2
2-8
27K
+
470/10
ROE
10K
1N4003
~
~
+84V
+
330/100
blue
8n2
KP
MKP
330nF
10K
4K89
10K
10K
1N4936
MJE15030
2R2
Rx1
3K16
10
2N3439
84V6
17K4
365
2N5401
10
10
17K4
red
red
2V2
470
ker
85V2
45V5
1900/150
+
3K01
10
2N5551
2N5551
44V9
29K4
2V8
10
22uF
MKP
330nF
8n2
KP
+117V
150/150
40K2
1K
+
45V5
+
1N5261B 47V
1 Watt
U3 U3
+
330/100
-84V
U3U3U3
MKP
330nF
8n2
KP
4K89
10K
2R2
Rx2
5K9
2N5416
10
MJE15031
1N4936
17K4
17K4
10
10
2N5551
365
470
ker
black
black
~
2N5401
2N5401
10
3K01
1900/150
+
~
29K4
22uF
10 1K
8n2
KP
MKP
330nF
+
1N5261B 47V
1 Watt
40K2
150/150
+
-117V
Mark Levinson No 23
voltageregulator-unit
for voltageamp
Mark Levinson No 23
peak current reducer
by "switch on"
allocated on front-board
transformer
10mF/6V3
+
10mF/6V3
68
68
2R2
BUSS
MDL 10
32V
+
BUSS
MDL 10
230
32V
VAC
transformer
RIFA
PME 271Y
10
10
4n7
10
RLY1
10mF/6V3
+
10mF/6V3
68
68
+
2R2
white
230VAC
15A 15A
black
black
47n/600V
black
1K
P38
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