Text preview for : Crest-4801_6001_7001disp pwramp.pdf part of Crest 4801, 6001 & 7001 power amplifier (display section)
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F1 34 V. AC 3A/MINI BR1 RS202 C6 470/50V R5 2.7K R7 100K R9 2.7K R10 2.7K R8 100K R6 2.7K
34 V. AC
D
D
R3 Q1 2N5551 10K LED 3 SIGNAL LED 4 SIGNAL 2N5551 Q2
R4 10K
Q3 2N5551
LED 1 CLIP C5 0.1/100V
LED 2 CLIP
2N5551 Q4
M5 44 V. OUT SIGNAL CH. A CLIP CH. A CONTROL V. CH. A LIMIT CH. A SPKR. RAIL CH. A MUTE CH. A TEMP SENSOR + TEMP SENSOR OUT TEMP SENSOR GND GROUND GROUND GROUND TRANSFORMER TEMP TRANSFORMER TEMP 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 26-48-1155
C
D3 1N4148
D5 1N4148
D7 1N4148
C1 1/50V
D9 1N4148
D8 1N4148
C2 1/50V
D6 1N4148
D4 1N4148
D2 1N4148
M6 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 26-48-1155
C
R11 5K/5W TR1
C3
C4
R12 5K/5W
470/6.3V
470/6.3V
R13 MAC97A 4.7K D11 Z1 1N5927 Z2 1N5927 D10 TR2 MAC97A
R14 4.7K
27 V. IN SIGNAL CH. B CLIP CH. B CONTROL V. CH. B LIMIT CH. B SPKR. RAIL CH. B MUTE CH. B TEMP SENSOR + TEMP SENSOR OUT TEMP SENSOR GND. GROUND RELAY GROUND RELAY GROUND RELAY 1,3 RELAY 2,4
1N4148
1N4148
* R19 D13 1N4148 LED 7 ACTIVE LED 5 TEMP/DC R15 2.7K R17 2.7K 7.5K R21 1K R23 750/1% R24 750/1%
* R22 1K R20 7.5K LED 6 TEMP/DC R18 13 8 LED 8 ACTIVE R16 2.7K D12 1N4148
1 IC1A LM614 4 3 1N4148 +
7 5 9 IC1 B LM614 +
R38 R25 4.7K MPSA75 Q5 R29 10K R27 390 100K R31 390K D17 1N4148 R33 4.7K R37 2.2K R34 4.7K R35 499/1% R36 499/1% R32 390K D16 1N4148
B
M7 1 2 3 26-48-1035 * NOTE ON 7001 R23, R24 WILL CHANGE TO 1K/1% WITH UL APPROVAL VR1 5KB VR2 5KB
A
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16 IC1D LM614
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D15
D19 1N4148 6
D18 1N4148 IC1 E LM614 15 D14 12 11 1N4148 + 10 IC1C LM614
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2.7K
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R39
100K R26 4.7K
R30 10K R28 390
Q6 MPSA75
B
M8 1 2 3 26-48-1035
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CREST AUDIO INC. 150 Florence Ave. Hawthorne, NJ 07506 Title 7001/6001/4801 DISPLAY Size C Date:
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Document Number 21C0948 Wednesday, May 17, 2000 Sheet
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Rev 1 of 0