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JI204
B
PROBE-V
JI203
El
PROBE-t-V
ICONTROLI
PIO
Jt201
SELECT
32
AUDIO
H'~
2
3
4
5
AUDIO GND{
8
9
10
LOGIC GND
21
Rt248
RI293
470K
30K
RI247
200K
~
ffi]
REVISIONS
PEPS-36253
REE
ISSUE
KIT
SYMBOL
CHANGE
LOCATION
A
TRN5174A
C1229
DELETED
SCHEMATIC,
CI233
thru
1236
WERE:
0.1 uF;
PARTS
LIST &
21-11021G04
PCB
CR1203
WAS: 48-1 1034AOI
DS1209,
1210
WERE:
48-82771LOI
R1219 thru
1222
WERE:
510 OHMS;
6-11009A42
R1227
WAS: 6.8k; 6-1 1009A69
R1243,
1244
WERE:
3.6k; 6-1 1009A62
R1294
ADDED
KNOB
36-83144NOl;
2-ADDED
PARTS
LIST
THN6486A
F1201
ADDED
PARTS
LIST
INSULATOR
14-83022POl;
ADDED
KNOB
2-DELETED
RING
WAS: 42-82234GOI
0.1
30K
B
I
SW1209A
8
1
1
METER
I
REVERSING
1
SWITCH
I
[]I
1
I
SWI209B
EJ
BUFFER
AMPLIFIER
I
CI247
lOOK
r
SWi20BA
I
I
METER
I
POSITION
SWITCH
OJ
l--~-----------;:-'
470PF
RI235
51210
I
SPEAKER
I
ffiJ
SWi208B
CI214
RI233
RI229
470K
RI234
7
RI241
I
3.6K
SELECT
AUDIO
1--
_-+-~/3~.8~V'__'\.FI:.=2:=0:.1
_
.•••. _~L~12~O~I::-..,.:-'"
+ ..•. A+
3A
600UH
ICI221
1000
N,C.
FUSED A++
1--
-+
TO DIAGNOSTIC
AND CONTROL
SECTION
3
UI218
5V
VB
+±CI222
47
-::1:-
2
5-VOLT
REGULATOR
-::1:-
AUDIO GNo
--..-
AUDIO SIGNAL
PATH
-Q
THEORY
NOTE
OUTPUT LIMIT
PROTECT CIRCUIT
I
I CONTROL I
JACK
1
.
2
•
}A++
3
•
.
4
•
• 6
7 •
•
8
} AUDIO GND
AUDIO GND{
9
•
•
10
N.C. II
••
12
EXPANSION
RESET
BAlli 13
••
14
BAI
BA2 15
••
16
BA3
~
17
••
18
B5I
tlm
19
•
• 20
BD3
LOGIC GND 21
•
22
OS
N_C. 23
••
24
N.C
N.C. 25
••
26
N. C.
N.C. 27
••
28
N. C.
N.C. 29
••
30
N. C.
N C. 31
•
• 32
SELECT AUDIO
N:C. 33
"
• 34
N.C.
N.C. 35
••
36
N.C.
AUDIO GND 37
•
• 38
N.
C.
N. C. 39
•
•
40
AUDIO GND
JI201
lPIN VIEW)
RI236
CI203
2K
RI232
510
0.1
CI215
1220PF
CI245
f
.~B
NOTE:
TLN2419 DIAGNOSTIC
METERING PANEL
SCHEMATIC
DIAGRAM
AND PARTS LISTS
1.
Unless otherwise
specified,
all resistor
values are in ohms. and all capacitor
values are in microfarads.
_--::-c:-
-----'I ... n,,'e:=gratedCircui~'O-"-~~h-"_r'
~~_
Ref.
Audio
Desig.
A
+
Gnd
Description
U1213
5
3
Power Amplifier
U1214
5
3
Power Amplifier
U1215
Vc
=
4
11
OuadDiffere
ntial-Input
Operational
Amplifier
U1218
5-Volt Regulator:
Pin 1
=
5 V; Pin 2
=
Audio
Gnd; Pin 3
=
Fixed A
+
~----
BRIDGE POWER
AMPLIFIER
!
INTERCONNECT
JACK
LATCH
4
Cf205
+f5~
.• ~~II~~~--~
BLK
LSI201
5W, 4 OHMS
RED
P1205-4
Jf205-4
I
METER
I
JI202
METER 5
5
METER 4
4
METER 3
3
METER 2
2
METER
I
METER COMMON
7
NOT
USED
6
N.C.
NOT
USED
8
N.C.
METER +
f!lll
METER -
IIIi
SPEAKER -
IiII
SPEAKER +
4
l1li
RI238
24
PROTECTION
CIRCUIT
WILL LIMIT
SPEAKER
OUTPUT
TO LESS THAN
7W BY ATTENUATING
INPUT SIGNAL.
CIRCUIT WILL
NOT BEGIN
ATTENUATING
UNTIL
AFTER
5
WATTS
OUTPUT
HAS BEEN ACHIEVED.
./'f
CI210
~1_-2-+II----~
CRf203
01221
M9653
D
G
RI246
CRI204
470K
S
RI245
470K
C1211
VB
-e-
-=
.0015
C1242
220PFI
A+
RI237
240
RI239
24
RI244
4.02K
1+
5
CI20B
J
0.1
A+
RI243
C1209
+
CI246
4.32K
20PF
RI250
VB
13K
4
Rf242
I
DEPS-35229-A
CI213
0.1
JI205
(PIN VIEW)
J1202
lFRONT
VIEW)
,J
~
I
2
3 4 5 6
C
IMETERI
JACK
NOT
USED
METER
COMMON
NOT USED
METER 5
METER 4
METER 3
METER 2
METER 1
4-22-88
68P81114E03
UNUSED
CIRCUITS
13
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