Schematics - Gemini


XTR-400 Service Manual

X2
X-OVER PCB
7 7
+ 12V
R11 R9
22.1K 1% 13K 1%
6 6
C7
10uF25V NP
5 5 + 12V
CH.1 (L) INPUT
4 4
C6 C4 C3 2
10uF25V NP .047uF5% .047uF5% 1
3 3 3
IC1A
CH.2 (R) INPUT
VR2 NJM4558DD
2 2 10KA
CH.1 (L) R8
VOLUME 39.2K 1% - 12V
1 1 CONTROL
- 12V
R10
39.2K 1%
R12
60.4K 1%
R18 R14 R15
10K 1% 10K 1% 13K 1%
+ 12V
+ 12V
C8 C5 2
2 .1uF 5% .1uF 5%
1 3
IC2A
3
IC3A
R13 NJM4558DD
60.4K 1% NJM4558DD
R1
39.2K 1%
- 12V - 12V
R7
39.2K 1%
R20 R6
22.1K 1% 13K 1%
C2 C12 6
.047uF 5% .047uF 5% 7
5
IC1B
VR1 NJM4558DD
10KA
CH.2 (R) R19
VOLUME 39.2K 1%
CONTROL
R5
39.2K 1%
CH.1 (L) INPUT PCB
INPUT
C4 270
3
R9 10K 1%
XLR2
R3 10K 1%
XLF-3PH 6
7
5
IC1B
R4 10K 1%
T NJM4558DD X1
R R7
S 10K 1% 7
+ 12V
C2
X3 TRS 1/4" BAL 270
R5 510
6
C1 0.047uF
5
4
4 6
SW1
"Signal ground lift" 1 3 3
2
C5 270
1
- 12V
R8 10K 1%
+ 12V
3
XLR1
R6 10K 1%
XLF-3PH 2
1
3
IC1A
R1 10K 1%
T NJM4558DD
R
S C3
270 - 12V
X2 TRS 1/4" BAL R2
10K 1%
CH.2 (R)
INPUT
X4
1
CH.1 (L) OUTPUT 2
3
4
SUB OUTPUT (+)
R17 13K 1%
6
7
5
R22 IC3B
13K 1% NJM4558DD
X3
R21 13K 1% R2 13K 1%
1
CH.2 (R) OUTPUT 2
3
6
7 SUB OUTPUT (-) 4
R3 39.2K 1% R4 39.2K 1%
1 5
IC2B
NJM4558DD
C11
0.033uF5%
C1 0.033uF5%
X1
1
+ 12V
C10
C13 0.1 2
100uF16V
3
- 12V
R16
2.4K
C14 C9
100uF16V 0.1
LD1
GRN
POWER PCB
SW3 SW-POWER
P1 P2
BRN
C101
P3
FUSE
6.3A / 110-120V
3.15A / 220-240V
BLU
F F
L
7 E
ORG
SW4
6 N VOLTAGE SELECTOR
115v 230v
5 CH.1 (L) OUTPUT
AC INLET
4
BLK
3 CH.2 (R) OUTPUT
WHT
2
1
SCHEMATIC
MAIN PCB
X3
1 CH.1 (L) INPUT
2
3
4 SUB INPUT (+)
R4
1K 1%
R9 5.1K
R12 13K 1%
X12 C10
2200pF C9 10
1 22uF25V
2 CH.2 (R) INPUT
R17 R18
3 5.1K 5.1K
4 SUB INPUT (-)
R34 5.1K
R23
5.1K C32 R22
22uF25V 5.1K
R33 5.1K
X9
R24
1
+12V 8.2K C30 R21
D3
10uF25V 5.1K
1N4148
2
3
-12V
R25
1K 1%
R35 5.1K
R27 13K 1%
C24
2200pF C25 10
22uF25V
T1
X6
BLACK
+E +12V
To CENTER TAP
POWER TRANSFORMER
R29 1.2K 3W
X8
RED
REC1
KBPS10-02
To POWER
C13 ZD3
TRANSFORMER
6800uF50V 12V 0.5W
2 4
C18
X7 6800uF50V
RED
ZD2
To POWER
12V 0.5W
TRANSFORMER
R28 1.2K 3W
X13 BLACK
-E -12V
To CHASSIS
X5
BLACK
To SPEAKER
OUTPUTS
18AWG BLACK
Page 9
C6 10pF
R6 26.7K 1%
+E
R14
1K 1%
U2 TDA7294V
C14
2 13 0.1
IN - +PWVs
SUBWOOFER
R8 5.1K
3 7 R13 13K 1%
OUTPUT (+)
IN + +Vs
R10 8R2 1W
4 14 X1
IN+MUTE OUT
RED C4
L2 1.0uH
6 390pF C8
MUTE BOOTSTRAP
10uF25V
9 8 C11 22uF50V C2
STBY -Vs
0.1uF100V
1 15
STBY-GND -PWVs
R15
5.1K
-E
R20
5.1K
C28 10pF 18AWG RED 45sm
Ends
Twisted pair to Subwoofer terminal
striped
15mm
R38 26.7K 1%K
18AWG BLACK 45sm
+E
R32
1K 1%
U4 TDA7294V
C16
2 13 0.1
IN - +PWVs
SUBWOOFER
R30 5.1K
3 7 R31 13K 1%
IN + +Vs OUTPUT (-)
R36 8R2 1W
4 14 X11
IN+MUTE OUT
BLACK C22
L3 1.0uH
6 390pF C20
MUTE BOOTSTRAP
10uF25V
9 8 C21 22uF50V C23
STBY -Vs
0.1uF100V
1 15
STBY-GND -PWVs
-E
+E
D1 1N4148
R2 2.4K
R5 Q2
2.4K 2SC4793
R1 8.2K
R7 Q1
68 2SC1815
C26
100uF16V X4
D2 ZD1 C12 C3
1N4148 24V 0.5W 4.7uF50V 220uF25V FAN
T
24 Vdc
C31
100uF16V
C7 10pF
R11 26.7K 1%
+E
U1 TDA7294V
2 13
IN - +PWVs
CH.1 (L)
3 7
OUTPUT OUTPUT PCB
IN + +Vs
R3 8R2 1W
4 14 X2 X1 NL4MP
IN+MUTE OUT
P1
RED
L1 1.0uH 18AWG RED
10 6 1+
MUTE BOOTSTRAP
9 8 C5 10uF50V C1
RED
STBY -Vs
0.1uF100V 1-
1 15
STBY-GND -PWVs
C15
R16
0.1
5.1K 2+
2-
-E
X2 NL4MP
P3
1+
RED/BLACK STRIP
1-
R19 2+
C27 10pF
5.1K
2-
R26 26.7K 1%
P2
BLACK
+E
U3 TDA7294V
2 13
IN - +PWVs
CH.2 (R)
3 7
IN + +Vs OUTPUT
R37 8R2 1W
4 14 X10
IN+MUTE OUT
RED/BLACK STRIP
L4 1.0uH
10 6
MUTE BOOTSTRAP
9 8 C19 10uF50V
STBY -Vs
C29
1 15 0.1uF100V
STBY-GND -PWVs
C17
0.1
-E
FAN1
24Vdc/0.19A
18AWG BLACK
OUTPUT
CH.1 (L)
OUTPUT
CH.2 (R)