Page 1
NF-1 & NF-1ANF-1 & NF-1A
SAFETY INSTRUCTIONS
Read instructions - All the safety and operating instruc-
tions should be read before the appliance is operated.
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.
Carts and Stands - The appliance should be used only
with a cart or stand that is recommended by the manufac-
turer.
An appliance and cart combination should be moved with
care. Quick stops, excessive force, and uneven surfaces
may cause the appliance and cart combination to over-
turn.
Wall or Ceiling Mounting - The appliance should be
mounted to a wall or ceiling only as recommended by the
manufacturer.
Ventilation - The appliance should be situated so that its
location or position does not interfere with its proper ven-
tilation. For example, the appliance should not be situ-
ated on a bed, sofa, rug, or similar surface that may block
the ventilation openings; or, placed in a built-in installa-
tion, such as a bookcase or cabinet that may impede the
flow of air through the ventilation openings.Heat - The appliance should be situated away from heat
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
Power Sources - The appliance should be connected to a
power supply only of the type described in the operating
instructions or as marked on the appliance.
Grounding or Polarization - The precautions that should
be taken so that the grounding or polarization means of
an appliance is not defeated.
Power Cord Protection - Power supply cords should be
routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords at plugs, convenience recep-
tacles, and the point where they exit from the appliance.
Cleaning - The appliance should be cleaned only as rec-
ommended by the manufacturer.
Nonuse Periods - The power cord of the appliance should
be unplugged from the outlet when left unused for a long
period of time.
Object and Liquid Entry - Care should be taken so that
objects do not fall and liquids are not spilled into the en-
closure through openings.
Damage requiring Service - The appliance should be ser-
viced by qualified service personnel when:
A.
B.
C.
D.
E.
Servicing - The user should not attempt to service the ap-
pliance beyond that described in the operating instruc-
tions. All other servicing should be referred to qualified
service personnel.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
TO PREVENT ELECTRIC SHOCK, MATCH
WIDE BLADE OF PLUG TO WIDE SLOT,
FULLY INSERT.
POUR ÉVITER LES CHOCS ÉLECTRIQUES,
INTRODUIRE LA LAME LA PLUS LARGE DE
LA FICHE DANS LA BORNE CORRE-
SPONDANTE DE LA PRISE ET POUSSER
JUSQU' AU FOND. CAUTION:
ATTENTION: The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and mainte-
nance (servicing) instructions in the literature
accompanying the appliance.
The lightening flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
dangerous voltage within the product's en-
closure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS-
TURE.
1.
2.
3.
4.
5.
6.
7.
8.The power supply cord or the plug has been damaged;
or
Objects have fallen, or liquid has been spilled into the
appliance; or
The appliance has been exposed to rain; or
The appliance does not appear to operate normally or
exhibits a marked changed in performance; or
The appliance has been dropped, or the enclosure
damaged. 9.
10.
11.
12.
13.
14.
15.
16.
17.
NF-1A Block Diagram
INPUT (UNBAL)
-10dBV
INPUT (BAL)
+4dBu
1: GND
2: HOT
3: COLD+3dB
LO FREQ.
60Hz-3dB
HIGH FREQ.
10kHz +3dB
-3dB 3kHzOFF
HI-MID ATT.VOLHF POWER TWEETER
WOOFER LF POWER TWEETER
LEVEL
-3dB0dB0dB
ON
19
Page 2
NF-1 & NF-1ANF-1 & NF-1A
Input PCB
3
2 8
4
1
5 7 6
5 7 6
5 7 6
3
2 8
4
1
17
19 16 18 20 S110D
7 9
6
8
10
2 4
1
3
21
22
5
17
19 16 18 20
2
4 1 3
21 22
5
1
3 2
7 8
3
2 8
4
1
3
2
1
5
4
3
2
1
5
4
J101
INPUT (UNBAL)
INPUT (BAL) -10dBV
+4dBu
J102
14 C50
JUMPER
3
R106
10K
2 8
7
3
2
4
5
1
R108
8.2KC102
10/16
C101
10/16 L102
BEADR102
20K
R101
20K
R103
20K L101
BEAD
R107
10KR104
20K
+15V
C105
1/50
C106
1/50
-15V C51
NONU101A
BA4560NC104
47p CER
C103
47p CERC107
10/16
R105
47KC111
0.027 PESC117
0.027 PES R110
39KR111
82K
S110B
R113
1MR114
43KR112
430KU101B
BA4560N
C120
10/16
R115
47KC131
10/16
R131
10K
R132
10K
C134
0.0022
PES
R136
20KR133
6.8K C113
1/50
-15V +15V
R134
18K R135
4.7K U102A
BA4560N C112
1/50
S130AR121
47K C122
0.015 PESR122
3KC118
10/16
R123
3K
C123
0.015 PES
C124
0.015 PESU102B
BA4560N
R124
1.6KR127
470
R125
1K
C125
NON
R126
4.7KC126
10/16
R128
47KS120A
VOL.
R140
10KA
C121
10/16
U103B
BA4560N
R139
47K
R129
4.7KR120
4.7K
-15V1
2J103
TO POWER LEDJ104
TO POWER AMP
1
2
3
4
5
+15V R117
2K C119
NON
C132
1/50 +15V
U103A
BA4560N
R141
10KB C115
10/16
C133
1/50
R116
47K-15V
R118
3K
C114
1/50 R119
1.6K
TWEETER
LEV. HI-MID ATT.
OFF
ON HI-FREQ. +3dB
0dB
-3dB LO FREQ. +3dB
0dB
-3dB
C136
10/16S130D
R137
20K C135
NON
S110A
TABLE OF CONTENTS
NF-1 owner's manual : 8288457000 (for export & domestic model)
NF-1A owners manual : 8288459000 (for export model)
: 8288460000 (for domestic model) 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.
NOTES
The following accessories are supplied with NF-1 as the standard accessories.
* *
Following is the packing material for the Model NF-1.
*
Carton, inner, 3 pads, NF-1 : 8228739000
Carton, outer, NF-1 : 8228917000
Sheet, mirror : 82167290001. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. CONTROLS, INDICATORS & CONNECTORS . . . . . . . . . . . . . .
3. EXPLODED VIEW, PCB ASSEMBLY & PARTS LIST . . . . . . . .
4. CIRCUIT & BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . .4
6
7
17
Following is the packing material for the Model NF-1A.
*
Carton, inner, NF-1A : 8228738000
Carton, outer, NF-1A : 8228916000
Packing, side, NF-1A : 8228466001
Packing, front, NF-1A : 8228466002
Sheet, mirror : 8216729000
183
