Kenwood 4042A Support Question
Kenwood 4042A Support Question
Find answers below for this question about Kenwood 4042A - KGC Equalizer / Crossover.Need a Kenwood 4042A manual? We have 2 online manuals for this item!
Question posted by acpl1 on February 23rd, 2020
Why My Kenwood Equalizer 4042 Has No Sound Coming Out From The Sub Woofer?
my sound was working good then the subwoofer sound stop working on my kenwood eauqlizer 4042 what it could be wrong? Or how can i fix that?
Current Answers
Answer #1: Posted by ZacnMish2018 on February 23rd, 2020 3:38 AM
ZacnMish2018
Member since:
February 23rd, 2020 Points: 1,900
Member since:
February 23rd, 2020 Points: 1,900
it could be a bunch of Things that it could be your amp on your subwoofer could be blowed or it could be a blow dial it on your circuit board. Where I would start is see if you're getting power from your equalizer to your subwoofer output. And then trace it down from there if you're not then it is in your equalizer. Probably a diode or a blowed circuit. Somewhere in your equalizer sound board.
Related Kenwood 4042A Manual Pages
Instruction Manual - Page 1
... KGC-4042A Serial...KENWOOD dealer for information or service on the warranty card, and in the spaces designated on the product. E) (4-) 94/12 11 KGC-4042A... GRAPHIC
MANUAL
EGAUSEUR GRAPHIQUE
MODE D'EMPLOI
Ig H151gIVNGSANLEITUNG
GRAFISCHE TOONREGELING
GEBRUIKSAANWIJZING
EQUALIZZATORE GRAFICO
ISTRUZIONI PER L'USO
M LIZADOR GRAFICO
NUALDENSTRUCCI0NES
KENWOOD CORPORATION
Take ...
Instruction Manual - Page 2
...may remove the indicator characters.
2 ACAUTION
To keep the unit in proper working order • Be sure it is fastened securely and not exposed to ...) are left inside the unit.
• If you smell or see smoke, disconnect the unit immediately and consult your KENWOOD dealer.
Cleaning 1. Always turn the power OFF before
cleaning. - 2. Continued use abrasive pads or paint thinner, benzene ...
Instruction Manual - Page 4
Sub-woofer system (p.6) This system controls the output level and cut-off frequency of your subwoofers. • Fader (p.7) Allows you to be switched between green and orange.
4 Before you begin For the 800 Hz, 3.2 kHz and 12.8 kHz bands, levels can be adjusted between -18 dB and +18 dB. FEATURES
A▪ • Graphic equalizer (p.5) i Allows...
Instruction Manual - Page 5
...adjustments
To increase level II. Press the Graphic equalizer button.
(The Graphic equalizer level knob indicator will go out indicating that the output sound has been adjusted with the graphic equalizer.)
I I : -= 17.71
°X
O
= L7J
H~ items Y.=
=
=T. GRAPHIC EQUALIZER
To turn the graphic equalizer OFF 0- Slide down the Graphic equalizer
level knob for the frequency band you wish...
Instruction Manual - Page 6
...up . SUB-WOOFER SYSTEM
4 To turn the sub-woofer system OFF ► Press the Sub-woofer button. (The Sub-woofer level knob and the Sub-woofer frequency knob indicators will go out. You will hear sub-woofer output.)
ON
To turn the sub-woofer system ON
daj ► Press the Sub-woofer button. (The Sub-woofer level knob and the Sub-woofer frequency knob indicators will cease.)
OFF
KENWOOD PHI...
Instruction Manual - Page 7
Effect control features 7
LEVEL
NOTE
• To prevent sub-woofer spillover to the left). KEN oo _ D
AF HLc:012311...UZER
VVO
FADER
0
200
800
azk 1228k FRED. FADER
To punch up the rear speaker output
&#... the right). To punch up the front speaker output
IP` Rotate the fader control knob counterclockwise (to front and rear, the fader does not affect sub-woofer output.
Instruction Manual - Page 9
... unconnected wires or connectors are in contact with one having the same rating (see indication in the car (r? If no short-circuits are short-circuited, rewire immediately. p.10). Install the unit in... carefully and, if any wires are found, replace the fuse with the body of the car, Extraneous noise or current entering the system can cause malfunction or damage.
• Selectable ...
Instruction Manual - Page 10
Sub-woofer
Power amplifier (Optional)
Left output (White) CONNECTIONS
* Circled numbers indicate the procedures described on page 9.
Instruction Manual - Page 12
... connection is turned fully to front or
the front or rear
rear. The Sub-woofer system is ON with no sound from 1 The fader is loose.
2. The equalizer is blown.
2. Connect the power supply.
The fuse on another unit to which the equalizer is connected is not connected to the power supply.
1. There is no...
Instruction Manual - Page 13
Equalizer
Equalizer Center Frequencies Equalization Range
50 Hz, 200 Hz, 800 Hz, 3.2 kHz, 12.8 kHz 50 Hz, 200 Hz: -18 to +18 dB
800 Hz, 3.2 kHz, 12.8 kHz: -12 to +12 dB
Sub-Woofer System
Cut-off Frequency Output Gain Cut-off Slope
30 to 150 Hz (variable) --to 60 kHz 0 dB
General Operating Voltage Max...
Service Manual - Page 1
...EQUALIZER
KGC-4042A
SERVICE MANUAL
REVISED S/No. 10700001~
Panel ass'y (A64-0071-08)
C 2001-8 PRINTED IN JAPAN B51-7838-00 (4) 3395
Knob (EQ) (K24-0700-08)
Knob (FAD) (K29-5541-08)
Trim plate (A21-0474-03)
Screw set (N99-1543-08)
Bracket (J21-3693-04)
Knob (SUB...) (K24-0710-08)
Metallic cabinet (A01-2568-08)
RCA pin cord (OUT, SUB) (E30-3649-08)
RCA pin cord ...
Service Manual - Page 2
...,4 (GR)
LED1-5
Q1 2SC4640 Q2 2SC1741A
+B
Q3 2SC2060 Q4 DTA114ES Q5 DTC114ES
POWER SUPPLY
Q6,7 2SA1782
MUTE DRIVE
LED6,7
METER LED SUPPLY
SUB WOOFER
ON OFF
SW2
IC3 NJM2068MD
L.P. GND KGC-4042A
2
Lch INPUT
Rch
IC4 NJM2060M
ISO
IC5 UPC4570G2 EQ
Q201-205 2SC2712
Lch
Q251-255 2SC2712
Rch
EQ B.P.F EQ B.P.F
EQ
SW1
OFF...
Service Manual - Page 3
... UNIT
1
MAIN PWB
E
EQ ON/OFF PWB
A
P.CON GND +B CN15
2
CN3
CN2 (REAR) CN1 (FRONT)
1
4
1
4
1
4
G1 A
(SUB.W)
C81
CN4
1
4
E
Q12
C83 EB
Q3 C84
D1
B
D3
C86 C82
D2
E
B
3
Q2
Q5
E
B
EB
Q4
D7
C87
B
E
Q1
Q7...
C256
5
R105
CN9
21
VR1
F
R CN10 1
61
R104 CN11
CN12
61
61
4 CN13
Q9
B
SUB
6
Ref. Q1 Q2 Q3 Q4 Q5 Q6 Address 3B 3B 3C 3C 3C 4C Ref. EQ ON
3
SW2...
Service Manual - Page 4
...4 3 2 1
L FRONT R
CN2
4
L
3
REAR
2
1
R
CN3 4 3 2 1
L SUB R
+B 41
R106 1.5K 44
R269 680 R270 4.7K C260 C261 0.033 270P 26
R271 33K
R266 560 R267... LINE
+B
B LINE
50
200 800 3.2K 12.8K
30Hz
VR2(6/7) SUBWOOFER FREQ.
supply circuit) before the appliance is returned to parts list). KGC-4042A
Indicates safety critical components.
To reduce the risk of electric shock, leakage-...
Service Manual - Page 5
...-45
B φ3x5 (Bi-Tap) BLK : N86-3005-45
C φ3x4 (Bi-Tap)
: N09-2630-08
D φ3x4.5 RIVET
: N29-0053-05
7
A 24x2
EXPLODED VIEW
B
KGC-4042A
B
30
B
1
4
50
200 800 3.2K 12.8K FREQ LEVEL
VR2-1 VR2-2 VR2-3 VR2-4 VR2-5 VR2-6 VR2-7
LED1 LED2 LED3 LED4 LED5 LED6 LED7
LAMP4
23...
Service Manual - Page 6
... K29-5541-08
KNOB (FADER)
26
2B K24-0700-08
KNOB (EQ)
27
2A K24-0710-08
KNOB (SUB)
28
2A K29-3501-08
KNOB ASS'Y (GE)
30
1A
A
2A
B
1A
C
2B
D
2B
LAMP1...10WV
C88
CE04DW1C331M ELECTRO 330UF 16WV
C89
CE04DW1V330M ELECTRO 33UF 35WV
C90
CE04DW1H010M ELECTRO 1.0UF 50WV
-
KGC-4042A
∗New Parts
PARTS LIST
Parts without Parts No. H25-0233-04
PROTECTION BAG (50X100)
...
Service Manual - Page 7
...
VARIABLE RESISTOR VARIABLE RESISTOR(1-7)
PUSH SWITCH PUSH SWITCH SLIDE SWITCH
indicates safety critical components.
9
Description
tina- Teile ohane Parts No. d e Parts No.
are not supplied.
KGC-4042A
∗New Parts
PARTS LIST
Parts without Parts No. d e Parts No.
Les articles non mentionnes dans le Parts No. werden nicht geliefert. AN Ref.
Service Manual - Page 8
..., Bangkapi, Huaykwang, Bangkok, 10320 Thailand
KENWOOD ELECTRONICS SINGAPORE PTE.
AN
Ref.
tion
dw
Des-
Equalizer Section Equalizer Center Frequency 50Hz, 200Hz, 800Hz,
3.2kHz, 12.8kHz Equalization Range 18~+18dB (500Hz, 200Hz)
−12~+12dB (800Hz, 3.2kHz, 12.8kHz) Sub-woofer Cut-off Frequency 30~150Hz (variable) Sub-woofer Output Gain 10dB Sub-woofer Cut-off Slope 12dB/oct...
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