Sony MXDJ-9000 Service manual
MX-DJ9000
SERVICE MANUAL
This set is the audio mixer in PMPK-DJ9000.
SPECIFICATIONS
General
Power requirements U.S.A. and Mexico: 120 V AC, 60 Hz
Power consumption 10 W
Inputs 2 PHONO, 2 LINE, 1 MIC
Microphone 1.5 mV
Phono 3 mV
Line 150 mV
Output power 7 V (peak-to-peak)
Outputs 1 LINE OUT, 1 REC OUT via RCA
Frequency range 20 - 20,000 Hz, ±3 dB
Distortion Less than 0.08 %
S/N ratio 70 dB (1 kHz)
Talkover attenuation –16 dB
Headphones impeadance 16 Ω
Dimensions Approx. 200 × 80 × 166 mm (7
Mass 1.6 kg (3 lb 8 oz)
European countries: 220 - 230 V AC,
50/60 Hz
Other countries: 110 - 120 V/
220 - 240 V AC, 50/60 Hz
1
3 × 6 in) (w/h/d)
4
/
US Model
AEP Model
UK Model
E Model
7
5
8
/
/8×
Supplied Accessory
AC power adaptor cord (1)
Audio cord (without ground wire) (2)
Design and specifications are subject to change without
notice.
AUDIO MIXER
1
TABLE OF CONTENTS
1. GENERAL ..................................................................... 3
2. DIAGRAMS
2-1. Circuit boards Location ...................................................... 3
2-2. Schematic Diagram ............................................................ 4
2-3. Printed Wiring Board – Main Section – ............................. 5
2-4. Printed Wiring Board – I/O Section – ................................ 6
3. EXPLODED VIEW
3-1. Chassis Section ................................................................... 8
4. ELECTRICAL PARTS LIST .................................... 10
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY P ARTS WHOSE P AR T NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
SECTION 1
d
GENERAL
This section is extracted from
instruction manual.
SECTION 2
DIAGRAMS
NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
1
2
3
4
5
6
7
TALK OVER
MIC LEVEL
010
CH-1
PHONO 1 LINE 1
LEVEL
10
5
0
MIC PHONES
10
5
0
CH-1
CUE
CH-1 CH-2
+3
0
-3
-8
-13
dBLR
GAIN
CH-1
0
10 5 0 CH-2
0CH-1
010
10
CROSSFADER
510
POWER
CUE LEVEL
010
CH-2
PHONO 2 LINE 2
LEVEL
10
5
0
CH-2
CH-2
ON
OFF
10
5
0
9
0
qa
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : Power on
• Voltages are tak en with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Signal path.
F : AUDIO
4
W or less unless otherwise
8
POWER switch
1
2 TALK OVER button
Press this button to use the microphone.
3 CUE select switch
This switch selects CH-1 or CH-2 for headphone
listening.
4 MIC LEVEL control
Adjusts the microphone level.
5 PHONO/LINE switch
Selects the signal to be input to the respective
channel.
6 Channel level display
Shows the left and right levels of the output.
7 Channel level knob
Adjusts the level of each channel.
8 MIC jack
You can connect microphones with mono plug.
qs
CUE LEVEL control
9
Adjusts the headphone volume without affecting
the output signal.
q; GAIN control
Use these controls to adjust the balance between
CH-1 and CH-2.
qa CROSSFADER knob
Mixes the signal of one channel with that of the
other.
qs PHONES jack
Use this jack to connect headphones. Accepts
headphone with an impedance of 16 ohms or
more, but 16 ohms is recommended. Select CH-1
or CH-2 with the CUE select switch.
2-1. CIRCUIT BOARDS LOCATION
MAIN board
CROSSFADER unit
I/O boar
MIC board
PHONE board
33
MX-DJ9000
2-2. SCHEMATIC DIAGRAM • See Page 5 and 6 for Printed Wiring Boards.
44
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