Sony HCD-MJ1, Service Manual

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TABLE OF CONTENTS
Specifications ............................................................................... 1
1.
SERVICING NOTES
..................................................
4
2. GENERAL
Index to parts and Controls .................................................... 5
3.
DISASSEMBLY
3-1. Case (Top) Section and
Plate (T back) Ornamentel Removal ............................... 8
3-2. Main board,Tuner board and Display board Removal .... 8
3-3. CD Mechanism, MD Mechanism and
Digital board Removal .................................................... 9
4.
DISC TABLE GETTING OUT PROCEDURE
ON THE POWER SUPPLY IS OFF
.......................
10
5.
TEST MODE
.............................................................
11
6. ELECTRICAL ADJUSTMENTS
..................................... 14
7.
EXPLANATION OF IC TERMINALS
...................... 22
8. DIAGRAMS
8-1. Block Diagram –Main Section– ................................. 30
8-2. Block Diagram –MD Section– ................................... 33
8-3. Circuit Boards Location .............................................. 37
8-4. Printed Wiring Boards –Main Section– ...................... 38
8-5. Schematic Diagram –Main Section– .......................... 41
8-6. Schematic Diagram –Digital Section– ....................... 46
8-7. Printed Wiring Boards –Digital Section– ................... 51
8-8. Printed Wiring Boards –BD : MD Section– ............... 54
8-9. Schematic Diagram –BD : MD Section– ................... 57
8-10. Schematic Diagram –Display Section– ...................... 61
8-11. Printed Wiring Boards –Display Section– .................. 65
8-12. Schematic Diagram –BD : CD Section– .................... 70
8-13. Printed Wiring Boards –BD : CD Section– ................ 73
8-14. IC Block Diagram ....................................................... 75
9. EXPLODED VIEWS
9-1. Cabinet Section ............................................................. 79
9-2. Chassis Section-1 .......................................................... 80
9-3. Chassis Section-2 .......................................................... 81
9-4. MD Mechanism Section (MDM-2ER) ......................... 82
9-5. Base Unit Section (MD) (MBU-2) ............................... 83
9-6. CD Mechanism Section-1 (CMD-5BD19) ................... 84
9-7. CD Mechanism Section-1 (CMD-5BD19) ................... 85
10. ELECTRICAL PARTS LIST
............................................ 86
Amplifier section
DIN power output
30 W + 30 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output
US, Canadian model :
30 W + 30 W
(6 ohms at 40Hz-16kHz, 1.0% THD)
35 W + 35 W
(6 ohms at 1kHz, 5% THD)
POPO 350W
Except US, Canadian model :
40 W + 40 W
(6 ohms at 1 kHz, lO% THD)
Music power output
70W+70W
(6 ohms at 1 kHz. lO% THD)
Inputs TAPE (phono jacks):
voltage 250 mV
impedance 47 kilohms
Outputs TAPE (phono jacks):
voltage 250 mV
impedance 1 kilohms
PHONES (stereo phone jack):
accepts headphones of 8 ohms
or more.
Supplied accessories
Sony RM-SMJI Remote (1)
Sony lithium battery. CR2025 (1 )
FM lead aerial (1)
AM loop aerial (1)
Speaker cords (2)
General
Power requirements
Destination Power Power
requirements consumption
US, Canadian model 120V AC,60Hz 95W
AEP, UK, German
220-230V AC, 50/60Hz 95W
Italian model
E, Singapore,
110-120V/ 220-240V AC,
Hong Kong model
50/60Hz Adjustable with 95W
the Voltage Selector
Dimensions
Approx. 430 x 95 x 290 mm
(17 x 3
3
/
4
x 11
1
/
2
inches) (w/h/d)
incl. projecting parts and controls
Mass Approx. 7.0 kg (15 Ib 7 oz)
Design and specifications are subject to
change without notice.