View Sony CMT-M373NT / HCD-M373 Service Manual online
deck, Tape player and Tuner section in
(6 ohms at 1 kHz, 10%
impedance 47 kilohms
frequencies: 32 kHz, 44.1 kHz and 48 kHz)
PHONES (stereo minijack):
an impedance of 8 ohms or
(50 kHz step)
(with the tuning interval
set at 9 kHz)
0.3 W or less (in Power
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
classified as a CLASS 1
LASER product. This
label is located on the
BLOCK OR BASE UNIT
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
The flexible board is easily damaged and should be handled with
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
checking it for adjustment. It is feared that you will lose your sight.
other than those specified herein may result in hazardous radiation
• Notice that the minus side of a tantalum capacitor may be
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
• Unleaded solder melts at a temperature about 40°C higher than
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
also be added to ordinary solder.
of emitting radiation exceeding the limit for
3-11. Motor Section ····························································· 23
3-12. Over Write Head (HR901) ········································· 23
3-13. Mini Disc Device (KMS-262E) ································· 24
3-14. POWER Board, Tuner (FM/AM) ······························· 24
3-15. REG Board, AMP Board ············································ 25
3-16. TRANS Board ···························································· 25
3-17. CD Mechanism Deck (CDM55A-30BBD61B) ········· 26
3-18. Cam (CDM55) ··························································· 26
3-19. Base Unit (BU-30BBD61B) ······································ 27
3-20. Optical Pick-Up (BU-30B Assy) ································ 27
CD SECTION ······································································ 35
MD SECTION ····································································· 36
– CD Section – ··························································· 48
– MD Section – ·························································· 49
– USB Section – ························································· 50
– MAIN Section – ······················································ 51
6-11. Printed Wiring Board – TC Board – ·························· 60
6-12. Schematic Diagram – TC Board – ····························· 61
6-13. Printed Wiring Board – MAIN Section – ··················· 62
6-14. Schematic Diagram – MAIN Section (1/2) – ············· 63
6-15. Schematic Diagram – MAIN Section (2/2) – ············· 64
6-16. Printed Wiring Board – HP Board – ·························· 65
6-17. Schematic Diagram – HP Board – ····························· 66
6-18. Printed Wiring Board – PANEL Section – ················· 67
6-19. Schematic Diagram – PANEL Section – ···················· 68
6-20. Printed Wiring Board
6-22. Printed Wiring Board – AMP Board – ······················· 71
6-23. Schematic Diagram – AMP Board – ·························· 72
6-24. Printed Wiring Board – POWER Board – ·················· 73
6-25. Schematic Diagram – POWER Board – ···················· 74
6-26. IC Pin Function Description ······································ 84
(CDM55A-30BBD61B) ············································· 95
function to let you know if there is a system
malfunction. The display shows a code made up
of three or five letters and a message alternately
to show you the problem. To solve the problem
refer to the following list. If any problem
persists, consult your nearest Sony dealer.
system does not support, such as a CD-ROM.
meet the standards.
available music software or CD-R.
cannot copy from a CD-R.
OPTICAL IN jack, or you tried to record from th e
digital component which is not connected correctly.
digital optical cable (not supplied) (page 52).
instructions supplied with the component.
power of the connected component is turned off
while recording the digital audio from the
component connected to the DIGITAL OPTICAL