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HCD-C7NT
SELF-DIAGNOSIS FUNCTION
The self-diagnosis function consists of error codes for customers, which are displayed automatically when errors occur,
and error codes, which show the error history in the test mode during servicing. For details on how to view error codes
for the customer, refer to the following box in the instruction manual. For details on how to check error codes during
servicing, refer to the following Procedure for using the Self-Diagnosis Function (Error History Display Mode).
Self-diagnosis display
This system has a Self-diagnosis display
function to let you know if there is a system
malfunction. The display shows a code made
up of 3 or 5 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.
C11/Protected
The MD is protected against erasure.
c Remove the MD and slide the tab to close the
slot (see page 19).
C12/Cannot Copy
You tried to record a CD or MD with a format that
the system does not support, such as a CD-ROM.
cRemove the disc and turn off the system once,
then turn it on again.
C13/REC Error
Recording could not be performed properly.
cMove the system to a stable place, and start
recording over from the beginning.
The MD is dirty or scratched, or the MD does not
meet the standards.
c Replace the MD and start recording over from
the beginning.
C13/Read Error
The MD deck cannot read the disc information
properly.
cRemove the MD once, then load it again.
C14/Toc Error
The MD deck cannot read the disc information
properly.
c Replace the MD.
Erase all the recorded contents of the MD using
All Erase Function (see page 35).
C41/Cannot Copy
The sound source is a copy of a commercially
available music software, or you tried to record a
CD-R (Recordable CD) or CD-RW (ReWritable
CD).
cThe Serial Copy Management System prevents
making a digital copy (see page 57). You cannot
record a CD-R or CD-RW.
C71/Check OPT-IN
This appears momentarily because of the signal of
the digital broadcast during recording.
cThere is no affect on the recorded contents.
No component is connected to the DIGITAL
OPTICAL IN jack, or a digital component is not
connected properly.
c Connect a digital component to the DIGITAL
OPTICAL IN jack properly using a digital
connecting cable (not supplied, see page 49).
The connected digital component is not turned on.
c See the operating instructions supplied with the
connected component and confirm whether the
component is turned on.
The digital connecting cable connected to the
DIGITAL OPTICAL IN jack is pulled out, or the
connected digital component is turned off during
digital recording.
c Connect the cable, or turn on the digital
component.
E0001/MEMORY NG
There is an error in the internal data that the system
needs in order to operate.
cConsult your nearest Sony dealer.
E0101/LASER NG
There is a problem with the optical pickup.
cThe optical pickup may have failed. Consult your
nearest Sony dealer.
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HCD-C7NT
TABLE OF CONTENTS
SELF-DIAGNOSIS FUNCTION
..................................... 2
1. SERVICING NOTES ............................................... 4
2. GENERAL ................................................................... 7
3. DISASSEMBLY ......................................................... 9
4. TEST MODE ............................................................... 24
5. ELECTRICAL ADJUSTMENTS
CD Section...................................................................... 33
MD Section..................................................................... 34
6. DIAGRAMS
6-1. Note For Printed Wiring Boards and
Schematic Diagrams....................................................... 45
- Wave forms ................................................................... 45
- Circuit Boards Location............................................... 45
6-2. Block Diagram - CD Servo Section -............................ 46
6-3. Block Diagram - MD Servo Section -........................... 47
6-4. Block Diagram - Main Section -................................... 48
6-5. Block Diagram - USB section -..................................... 49
6-6. Printed Wiring Boards - BD (CD) Board -................... 50
6-7. Schematic Diagram - BD (CD) Board -........................ 51
6-8. Printed Wiring Boards - Connector Section -.............. 52
6-9. Schematic Diagram - Connector Section -.................... 53
6-10. Printed Wiring Board - BD (MD) Board -.................... 54
6-11. Schematic Diagram - BD (MD) Board (1/2) -.............. 55
6-12. Schematic Diagram - BD (MD) Board (2/2) -.............. 56
6-13. Printed Wiring Board - MD DIGITAL Board -............ 57
6-14. Schematic Diagram - MD DIGITAL Board (1/3) -...... 58
6-15. Schematic Diagram - MD DIGITAL Board (2/3) -...... 59
6-16. Schematic Diagram - MD DIGITAL Board (3/3) -...... 60
6-17. Printed Wiring Board - UCOM Board -........................ 61
6-18. Schematic Diagram - UCOM Board -........................... 62
6-19. Printed Wiring Boards - Audio Section -...................... 63
6-20. Schematic Diagram - Audio Section -........................... 64
6-21. Printed Wiring Board - PANEL Board -....................... 65
6-22. Schematic Diagram - PANEL Board -.......................... 66
6-23. Printed Wiring Boards - Power Section -...................... 67
6-24. Schematic Diagram - Power Section -.......................... 68
6-25. IC Block Diagrams......................................................... 69
6-26. IC Pin Function Description........................................... 74
7. EXPLODED VIEWS ................................................ 82
8. ELECTRICAL PARTS LIST ............................... 92
