User manual FOSTEX NF-1A SERVICE MANUAL

[. . . ] Retain instructions - The safety and operating instructions should be retained for future reference. Heed warnings - All warnings on the appliance and in the operating instructions should be adhered to. Follow instructions - All operating and use instructions should be followed. Water and Moisture - The appliance should not be used near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like. [. . . ] All other servicing should be referred to qualified service personnel. 3kHz HI-MID ATT. OFF ON The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. VOL LF POWER WOOFER INPUT (UNBAL) -10dBV INPUT (BAL) +4dBu 1: GND 2: HOT 3: COLD 19 NF-1 & NF-1A TWEETER LEV. J104 TO POWER AMP 1 2 3 4 5 J103 TO POWER LED 1 2 NF-1 & NF-1A U103A BA4560N R141 10KB 4 R119 1. 6K C114 1/50 C119 NON +15V C132 1/50 C133 1/50 +15V 7 R120 4. 7K -15V 2 5 R117 2K 1 -15V R118 3K U103B BA4560N R116 47K R139 47K R129 4. 7K 2 3 6 5 C115 10/16 C121 10/16 VOL. R140 10KA 5 2 HI-MID ATT. OFF ON 4 2 S120A R127 C126 1 470 10/16 3 R125 1K C125 NON R128 47K 7 U102B BA4560N C123 0. 015 PES R124 1. 6K 6 5 C118 10/16 R122 3K C122 0. 015 PES HI-FREQ. +3dB 0dB -3dB S130D R121 47K 16 20 C124 0. 015 PES R123 3K R134 18K R126 4. 7K U102A BA4560N C136 10/16 R135 4. 7K 17 18 19 +15V 1 2 3 4 -15V S130A R137 20K C112 1/50 C135 NON C113 1/50 C134 0. 0022 PES R136 20K 2 3 1 5 R133 6. 8K R131 10K LO FREQ. +3dB 0dB -3dB S110D C131 10/16 R132 10K 16 20 R115 47K 17 18 19 U101B BA4560N 7 C120 10/16 6 5 R112 430K S110B R111 82K C117 C111 0. 027 PES 0. 027 PES S110A 21 22 R113 1M R114 43K R110 39K C107 10/16 R105 47K R104 20K C105 1/50 C104 47p CER +15V C106 1/50 1 U101A BA4560N 2 -15V C103 47p CER 3 C51 NON L102 BEAD C102 R102 10/16 20K R101 20K C101 L101 10/16 BEAD R103 20K R107 10K Input PCB R108 8. 2K R106 10K INPUT (UNBAL) 8 7 3 2 4 5 1 INPUT (BAL) J102 2 -10dBV +4dBu 1 18 C50 JUMPER J101 3 22 21 4 3 2 4 5 1 1 6 10 4 4 7 8 8 3 7 8 9 8 3 1 4 TABLE OF CONTENTS 1. EXPLODED VIEW, PCB ASSEMBLY & PARTS LIST . 17 8 NOTES * Parts List, exploded views and circuit diagrams are given in this manual to assist the service technician in maintaining the Model NF-1 & NF-1A. * The following accessories are supplied with NF-1 as the standard accessories. NF-1 owner's manual NF-1A owner's manual : 8288457000 (for export & domestic model) : 8288459000 (for export model) : 8288460000 (for domestic model) * Following is the packing material for the Model NF-1. Carton, inner, 3 pads, NF-1 Carton, outer, NF-1 Sheet, mirror : 8228739000 : 8228917000 : 8216729000 * Following is the packing material for the Model NF-1A. Carton, inner, NF-1A Carton, outer, NF-1A Packing, side, NF-1A Packing, front, NF-1A Sheet, mirror : 8228738000 : 8228916000 : 8228466001 : 8228466002 : 8216729000 3 1 8 +15V W501 C501 0. 0022 PES R503 10K 2 C508 220p CER 9 IN1 4 R505 1K 3 +V 10 IN+ +V OUT3 TO INPUT 5 -15V +38V R508 20K -38V C516 220p CER 6 R510 10K 7 5 C511 0. 0022 PES U501B BA4560N R513 130 C512 100/16 9 INR512 1K C510 0. 0039 PES R511 10K 1 5 +V 10 IN+ U510 LM3886TF 7 GND 8 MUTE R516 20K NC 2 NC 6 NC 11 -V 4 R517 10 C517 0. 1 PES +V OUT3 1 2 3 4 J502 4 1 4 dB 100 10 20 30 40 50 60 70 80 90 10 NF-1 & NF-1A NF-1 1. SPECIFICATIONS <NF-1 Distortion Characteristic> 20 Hz 50 100 200 500 1000 Enclosure system Drivers · NF-1 Dimensions Impedance Frequency Response Crossover Frequency Sound Pressure Level Input (Program) Enclosure volume Weight 240 mm 2000 5000 10000 Second Distortion Third Distortion 20000 40000 100 30 40 50 60 70 80 90 10 20 Hz 50 100 200 dB 110 274 mm 267 mm 500 1000 2000 5000 Power Amp & SW PCB C506 47p CER R507 10K +38V +15V C503 0. 01 CER Specifications and physical appearance are subject to change without notice for product improvement. 2-way bass-reflex system 160 mm HP woofer x 1 (low-leakage type) 20 mm Soft-Dome tweeter x 1 (low-leakage type) 8 50 Hz ~ 40 kHz 10 kHz 89 dB/W (1 m) 120 W 11 liters Approx. 9. 1 kg <NF-1 Frequency / Impedance Characteristic> 340 mm 10000 20000 40000 16 32 4 8 30º 60º 1 2 3 4 5 C502 0. 0022 PES R504 20K U501A BA4560N -15V C504 0. 01 CER C513 47p CER R515 10K C505 1/50 R506 150 U502 LM3886TF 7 GND 8 MUTE NC 2 NC 6 NC 11 -V R509 10 C509 0. 1 PES 4. CIRCUIT & BLOCK DIAGRAMS TO LF SPEAKER TO HF SPEAKER -38V U001 DTC114ES 2 3 C008 100/16 -38V L1 BEAD 6H F1 FUSE 1 J001 AC IN W1 GND 1 C012 NON L2 BEAD 6H 1 100V: GRY W3 120V: BRN 230V: VIO 1 W4 WHT 100/12V: 3. 15A C011 230V: 1A 0. 0047 W6 1 BRN 1 2 3 J501 1 2 3 CONN-M-03 C014 NON C013 NON W5 BRN S1 SW POWER T1 TRANSFORMER POWER R004 +38V 270 1/2W RF R001 4. 7K C002 4700/63 C004 1/50 D002 MTZJ15 Q001 2SD1200F +15V C006 10/16 R003 470K D001 GBU6D C005 1/50 C003 4700/63 R002 4. 7K -38V R005 270 1/2W RF D003 MTZJ15 C007 10/16 Q002 2SB889F -15V NF-1 & NF-1A 17 NF-1 & NF-1A NF-1 & NF-1A Ref. R121 R122, 123 R124 R125 R126 R127 R128 R129 R131, 132 R133 R134 R135 R136, 137 R139 R140 R141 Part No. 8230 1384 8230 1383 8230 1381 8230 1381 8230 1384 8230 1384 8230 1384 8230 1384 8230 1381 8230 1386 8230 1381 8230 1384 8230 1382 8230 1384 8240 2930 8240 2930 73 02 62 02 72 71 73 72 03 82 83 72 03 73 06 07 Description HT, Carbon, 1/4W, 47k, 5% HT, Carbon, 1/4W, 3k, 5% HT, Carbon, 1/4W, 1. 6k, 5% HT, Carbon, 1/4W, 1k, 5% HT, Carbon, 1/4W, 4. 7k, 5% HT, Carbon, 1/4W, 470, 5% HT, Carbon, 1/4W, 47k, 5% HT, Carbon, 1/4W, 4. 7k, 5% HT, Carbon, 1/4W, 10k, 5% HT, Carbon, 1/4W, 6. 8k, 5% HT, Carbon, 1/4W, 18k, 5% HT, Carbon, 1/4W, 4. 7k, 5% HT, Carbon, 1/4W, 20k, 5% HT, Carbon, 1/4W, 47k, 5% Pot. , PI, RT9, 10kA, EVUE2A Pot. , PI, RT9, 10kB, EVUE3A Ref. Description 8253 6550 19 SW, PL, slide, 4-3, non-shortening, SSSFI, L06 8253 6550 20 SW, PL, slide, 2-2, non-shortening, SSSFI, L06 8253 6550 19 SW, PL, slide, 4-3, non-shortening, SSSFI, L06 NF-1A Speakers Enclosure system Drivers Impedance Reproduction Frequency Response Enclosure volume Maximum output sound level Amplifiers Output power Tweeter SPL adjustable level Filter characteristic adjustable level HI-FREQ (10 kHz) LO-FREQ (60 Hz) HI-MID ATT. (3 kHz) Input terminals Normal input level Input impedance Crossover frequency Others Weight Power supply Power consumption 2-way bass-reflex system 160 mm HP woofer x 1 (low-leakage type) 20 mm Soft-Dome tweeter x 1 (low-leakage type) 8 50 Hz ~ 40 kHz 9. 2 liters 106 dB (with VOL max. /rated input) 60 W each for low and high frequency amplifiers ± 3 dB + 3 / 0 / - 3 dB (selective) + 3 / 0 / - 3 dB (selective) 0 dB when switched off. XLR-3-31 type (for balanced input) 6 mm phone jack (for unbalanced input) +4 dBu (XLR balanced input) -10 dBV (phone unbalanced input) 20 k or more 5 kHz Approx. 11 kg 120 V AC, 60 Hz 230 V AC, 50 Hz 52 W · SW PCB assy Ref. Description 8274 2720 00 PCB Assy, SW, NF-1A 8251 9930 03 Plain PCB, SW, NF-1A MISCELLANEOUS Ref. Description E001 Wire, jumper, F5 E002 Wire, jumper, F10 J101 8245 3390 09 Connector, PI, jack, phone, YKB21-5006 J102 8245 2680 03 Connector, PI, jack, XLR, NC3FAH2-0 J103 8245 0530 02 Connector, PI, jack, 8283, 2P, WHT J104 8245 3080 05 Connector, PI, jack, 5P, SBRK 5S-4 L101, 102 8242 1860 13 Filter, T, EMI, LEF7B-M3R2T Abbreviation DIP: Dual In Line H: Horizontal mount ZIP: Zigzag in-line package SIP: Single in-line package V: Vertical mount T: Taping device P: Penetrate mount I: I form (straight) L: L form (right angle) DG: Digital AN: Analogue 240 mm 267 mm 320 mm Specifications and physical appearance are subject to change without notice for product improvement. 16 340 mm Ref. C050, 051 C101, 102 C103, 104 C105, 106 C107 C111 C112~114 C115 C116 C117 C118 C119 C120, 121 C122~124 C125 C126 C131 C132, 133 C134 C135 C136 CAPACITORs ALU = Electrolytic type CER = Ceramic type PES = Mylar type Part No. 8236 0781 8236 0361 8236 0466 8236 0466 01 00 00 00 Ref. [. . . ] 8230 1382 8230 1382 8230 1384 8230 1381 8230 1388 8230 1383 8230 1388 8230 1384 8230 1381 8230 1384 8230 1384 8230 1382 8230 1383 8230 1381 8230 1384 6 15 J001 W3 PT (WHT) NF-1 OVERALL EXPLODED VIEW & PARTS LIST Ref. 1 B805 5830 00 2 3 4 5 6 7 8 9 10 11 B805 5829 00 8216 7300 00 8260 5760 00 8216 7280 00 8214 3940 00 8214 3930 00 8216 7240 00 8245 3580 00 8276 9200 00 8276 9200 01 Description Woofer, NF-1/NF-1A Tweeter, NF-1/NF-1A Packing Enclosure assy, NF-1 Damping material, 490 x 190 x 10 Bolt, M3, torx button, L20, T (included in the enclosure assy) Bolt, M4, torx button, L20, T (included in the enclosure assy) HP reflector, NF-1 (not included in the enclosure assy) Terminal, CL-S48-1 Cord, red, L = 350 Cord, blk, L = 350 Ref. 12 8276 9200 03 13 14 15 8277 5020 00 0532 1031 06 8220 8490 00 Description Cord, blk, L = 300 Cable assy, L = 300 (+ C 1. 0µF) CM1. 0, film capacitor Emblem, FOSTEX 5 4 3 2 7 6 RED (+): To Tweeter 3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST 13 15 14 BLK (-): To Tweeter BLK (-): To Woofer RED (+): To Woofer 12 11 10 7 1 7 SW 8251993 003 14 W1 GND W4 PT (WHT) NF-1 & NF-1A · Foil side of SW PCB assy W6 · Parts side of SW PCB assy EUR/UK W3 PT J001 C011 SW L2 N C012 W5 L F1 L1 T1A 250V JPN/USA/CND 3. 15A 125V F1 L1 C012 L W5 N C011 L2 SW W6 W3 PT 8 8 9 7 NF-1 & NF-1A R139 C121 C115 R116 C114 R119 R118 C118 R128 C126 R125 R127 R132 R136 C134 R133 R134 R135 C131 R105 C111 R113 L101 R106 R108 R107 J101 R115 R111 R110 R112 R101 R102 C103 C120 R103 C102 L102 C117 C132 R117 R126 R121 R122 R125 R123 R131 C133 C119 C112 C124 R124 C123 C122 C113 R137 C135 C136 U101 C51 R104 C105 C106 C104 R120 R129 1 J104 5 12 J103 INPUT. [. . . ]