LTO L-12, Service Manual

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CH2.Sch
Titel
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Date:
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Sheet
Revision Model No:
12-Jul-2003
BOW
5 3 of
ALTO L12
VER030712
A3
PCB# L12MN2.PCB
L12MN2CH2(3/5)
R16_1
6K8
VR7_1
W50K
AUX1
R7_1
5K1
5
6
7
U2_1B
4580M
VR5_1A
10KD
R20_1
12K
C9_1
22P
VR9_1
W50K
C4_1
47u/25V
R14_1
6K8
AUX3
LEVEL
AUX-POST
R8_1
5K1
R9_1
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
2
1
3
SW7_1A
PS-22E85L
5
4
6
SW7_1B
PS-22E85L
2
1
3
SW3_1A
PS-22E85L
5
4
6
SW3_1B
PS-22E85L
2
1
3
SW6_1A
PS-22E85L
5
4
6
SW6_1B
PS-22E85L
5
4
6
SW4_1B
PS-42E85L
2
1
3
SW4_1A
PS-42E85L
SUB1
SUB2
R10_1
5K1
R11_1
5K1
AUX1/2 PRE/POST
R5_1
10K
SOLO(PFL)
D1_1
BAS316
LOGIC
LD1_1
YEL
(SOLO)
R23_1
2K2
-VCC
(LOGIC=2.0V or 0.5V)
8
4
U1_1C
4580M
C17_1
100n
+VCC
-VCC
LOGIC
EQ HI (12K)
C7_1
6.8n(M)
VR1_1
B50K
R25_1
5K6
VR4_1
B50K
R24_1
5K6
LO (80Hz)
R4_1
10K
3
2
1
U2_1A
4580M
R19_1
1M
C6_1
22P
R18_1
3K9
VR2_1
B50K
MID (FREQ=100Hz-8K)
C11_1
33n(M)
C12_1
33n(M)
C8_1
6.8n(M)
C3_1
47u/25V
C2_1
47u/25V
INS2-CH2
INS2-CH2
3
2
1
U1_1A
4580M
5
6
7
U1_1B
4580M
R2_1
10K
R3_1
10K
C5_1 22P
C10_1
152(M)
R6_1
5K1
R1_1
3K
VR3_1B
500KC
VR3_1A
500KC
R22_1
6K2
C1_1
682(M)
R21_1
6K2
2
1
3
SW5_1A
PS-22E85L
5
4
6
SW5_1B
PS-22E85L
SUB3
SUB4
R12_1
5K1
R13_1
5K1
8
7
9
SW4_1C
PS-42E85L
11
10
12
SW4_1D
PS-42E85L
AFL-L
AFL-R
R27_1
6K8
R28_1
6K8
VR8_1
W50K
R15_1
6K8
AUX4
AUX-POST
R17_1
6K8
AUX2
VR10_1
W50K
AUX-PRE
5
4
6
SW1_1B
PS-22E85L-2
2
1
3
SW1_1A
PS-22E85L-2
LD2_1
RED
R26_1
3K3
+VCC
MUTE
2
1
3
SW2_1A
SW PS-22E85L-2
L-CUT2-OF
L-CUT2-ON
INS1-CH2
TRIM2-CH2
TRIM1-CH2
TRIM-CH2
LO-CUT-CH2
VR11_1
O10K
DIR-OUT2
8
4
U2_1C
4580M
C18_1
100n
C19_1
100n
C20_1
100n
R40_1
15K
VR6_1
W50K
R29_1
4K7
R30_1
4K7
R49_1
4K7
R47_1
10K
R46_1
10K
R45_1
10K
R42_1
100K
R41_1
100K
C21_1
1uF
R43_1
8K2
PGND PGND
PGND
PGND
LD3_1
LED-2P
TR1_1
HR
R44_1
82R
1
2
3
4
8
U4_1A
393
5
6
7
U4_1B
393
R50_1
27K
R51_1
1K
5
6
7
U3B
4580M
PGND
綠 紅
D2_1
4148
D3_1
4148
C22_1
1uF
PGND
D4_1
4148
PGND
+RVCC
TR2_1
7002
R48_1
10K
C23_1
470P
+RVCC
C28_1
47u/25V