Text preview for : Crest_Audio_3301_schematic.pdf part of CREST Crest Audio 3301 schematic . Rare and Ancient Equipment CREST 3301 Crest_Audio_3301_schematic.pdf
Back to : Crest_Audio_3301_schemati | Home
8 7 6 5 4 3 2 1
TEMP 'A'
R123 R105
10K 100
8
3
IGM 'A' +
9 1
+ R101
14 2
- IC102A
8
- IC101C 4.7K LM358A
LM339 C101
4
1/50V
D D
R118 R124
10K
100K R102 R103
4.7K 2.7K
3
CLIP 'A' R119 A/CLIP
5 R108 Z101
+ R107 PROT 'A'
2
10K
4 D102
- IC101A 4.7K 1K
LM339 1N4148 1N5918A
(5.1V)
12
DATA 'A'
R122
220
C103
0.1/50V
TEMP 'B'
R125
R113
10K 100
5
+
+24V 11 R109 7
+
13 6
-
10 IC102B
- IC101D 4.7K
LM358A C102
LM339
1/50V
R126
10K R110 R111
R117 R120 4.7K 2.7K
2.2K
100K
R121 B/CLIP
7 R115 R116 Z102
+ D105 PROT 'B'
1
10K 6
- IC101B 1N4148 4.7K 1K 1N5918A A/DATA
LM339 D107 (5.1V) AUX GND 1
VDDA DATA 'B' 2
1N4001 B/DATA
A/+16V 3
B/+16V 4
D108 A/-16V 5
B/-16V 6
1N4001 7
VDDB
J3
26-48-1075
C DATA & POWER CONN. C
D109 VEEA
1N4001
D110
VEEB
1N4001
IGM 'B'
C105 C104
0.1/50V 0.1/50V
CLIP 'B'
34 V. AC
R5 R8 R6
2.7K R7 100K 2.7K
100K
F1
34 V. AC R9
C6
470/50V 2.7K R10
3A/MINI 2.7K
R3 R4
Q1 LED 3 2N5551
BR1 SIGNAL
2N5551
RS202 10K Q2 10K
LED 4
SIGNAL
Q3
LED 1 LED 2 2N5551
2N5551 C5
CLIP CLIP Q4
0.1/50V
D3 D5 D7 C1 D9 D8 C2
1N4148 1/50V D6 D4 D2
1N4148 1N4148 1N4148 1/50V 1N4148
M5 1N4148 1N4148 1N4148 M6
44 V. OUT 27 V. IN
SIGNAL CH. A 15 15 SIGNAL CH. B
CLIP CH. A 14 14 CLIP CH. B
CONTROL V. CH. A 13 C4 13 CONTROL V. CH. B
12 R11 C3 R12 12
LIMIT CH. A LIMIT CH. B
SPKR. RAIL CH. A 11 11 SPKR. RAIL CH. B
MUTE CH. A 10 TR1
5K/5W 5K/5W 10 MUTE CH. B
B 9 470/6.3V 470/6.3V 9 B
TEMP SENSOR + TEMP SENSOR +
TEMP SENSOR OUT 8 8 TEMP SENSOR OUT
TEMP SENSOR GND 7 7 TEMP SENSOR GND.
GROUND 6 6 GROUND
5 R13 R14 5
GROUND RELAY GROUND
4 MAC97A TR2 4
GROUND Z1 Z2 RELAY GROUND
TRANSFORMER TEMP GND 3 10K 10K 3 RELAY 1,3
1N5927A 1N5927A MAC97A
TRANSFORMER TEMP 2 2 RELAY 2,4
1 C8 C7 1
26-48-1155 100/25V 26-48-1155
100/25V
D11 D10
1N4148 1N4148
R19 R21 R23 R24 R22 R20
D13 LED 7 LED 5 5.1K LED 6 LED 8 M8
1K 750/1% 750/1% 1K 5.1K D12
1N4148 ACTIVE TEMP/DC TEMP/DC ACTIVE 1N4148 3
VR2 2
5KB 1
R15 R17 R18 R16
13
2.7K 2.7K 26-48-1035
8
M7 D19 D18 2.7K 2.7K
13
1N4148 1N4148
3 VR1 D15 D14
- 2 - 6 15 - 12
2 +
5KB 1 7 16 10
1 + 3 + 5 IC1E 14 + 11
IC1A LM614 IC1D - IC1C
26-48-1035 1N4148 IC1B LM614 1N4148
LM614 LM614
9
LM614
4
R38 R39 100K
R25 100K R26
4.7K R31 R35 R36 R32 4.7K
MPSA75 390K 499/1% 499/1% 390K
R29 R30
D17 D16 Q6
10K 10K
1N4148 1N4148 MPSA75
Q5
R27 R33 R37 R34 R28
390 4.7K 2.2K 4.7K 390
A A
12-14-93
CHANGE R101,R109 FROM 10K TO 4.7K.
CHANGE R 103,R111 FROM 2.2K TO 2.7K.
CHANGE R 107,R115 FROM 3.3K TO 4.7K.
CHANGE R108,R116 FROM 2.2K TO 1K.
CHANGE Z10 1,Z102 FROM 1N5913 TO 1N5918.
NOTE 1
R23,R24 WILL CHANGE TO 1K/1% WITH UL APPROVAL.
CREST AUDIO
100 EISENHOWER DRIVE
PARAMUS, NJ 07652
Size Document Number Rev
D 21D1977-xx
Date: Wednesday, May 17, 2000 Sheet 0 of 0
8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
RED
R94
4.7/1W
R93
51.1/1W/1% R139
10/1W
D35 C43
D Q22 FR204 22/160V D
Q16
2SA1006BQ 2SC2336BQ
R143
R147 Q24
51/0.5W 10/1W 2SC3281 Q28 Q30 Q32 Q34 Q36
C29 2SC3281 2SC3281 2SC3281 2SC3281 2SC3281
0.1/100V R125
R91 R14 BLK
220 22 C39
330PF 2.2/1W R127 R129 R131 R133
2.2/1W 2.2/1W 2.2/1W 2.2/1W
C31 C30 RL1
330PF 100/16V