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DEH-P720,P7200
7. GENERAL INFORMATION
7.1 DIAGNOSIS
7.1.1 TEST MODE
-
Error Messages
If a CD is not operative or stopped during operation due to an error, the error mode is turned on and cause(s) of the
error is indicated with a corresponding number. This arrangement is intended at reducing nonsense calls from the
users and also for facilitating trouble analysis and repair work in servicing.
(1) Basic Indication Method
1) When SERRORM is selected for the CSMOD (CD mode area for the system), error codes are written to DMIN (min-
utes display area) and DSEC (seconds display area). The same data is written to DMIN and DSEC. DTNO remains
in blank as before.
2) Head unit display examples
Depending on display capability of LCD used, display will vary as shown below. xx contains the error number.
8-digit display
6-digit display
4-digit display
ERROR–xx
ERR–xx
E–xx
OR
Err–xx
(2) Error Code List
Code
Class
Displayed error code Description of the code and potential cause(s)
10
Electricity
Carriage Home NG
CRG can't be moved to inner diameter.
CRG can't be moved from inner diameter.
→
Failure on home switch or CRG move mechanism.
11
Electricity
Focus Servo NG
Focusing not available.
→
Stains on rear side of disc or excessive vibrations on REWRITABLE.
12
Electricity
Spindle Lock NG
Spindle not locked. Sub-code is strange (not readable).
→
Failure on spindle, stains or damages on disc, or excessive vibrations.
Subcode NG
A disc not containing CD-R data is found. Turned over disc are found,
though rarely.
→
Failure on home switch or CRG move mechanism.
RF AMP NG
An appropriate RF AMP gain can't be determined.
→
CD signal error.
17
Electricity
Setup NG
APC protection doesn't work. Focus can be easily lost.
→
Damages or stains on disc, or excessive vibrations.
30
Electricity
Search Time Out
Failed to reach target address.
→
CRG tracking error or damages on disc.
A0
System
Power Supply NG
Power (VD) is ground faulted.
→
Failure on SW transistor or power supply (failure on connector).
Remarks: Mechanical errors are not displayed (because a CD is turned off in these errors).
Unreadable TOC does not constitute an error. An intended operation continues in this case.
A newly designed head unit must conform to the example given above.
Upper digits of an error code are subdivided as shown below:
1x: Setup relevant errors, 3x: Search relevant errors, 3x: Search relevant errors, Ax: Other errors.
Summary of Contents for Suepr Tuner III DEH-P7200
Page 4: ...4 DEH P720 P7200 2 2 EXTERIOR ...
Page 7: ...7 DEH P720 P7200 ...
Page 8: ...8 DEH P720 P7200 2 3 CD MECHANISM MODULE ...
Page 19: ...19 DEH P720 P7200 5 6 7 8 5 6 7 8 D C B A B KV1410 23 ...
Page 20: ...OEL TEXT 20 DEH P720 P7200 1 2 3 4 1 2 3 4 D C B A 3 4 KEYBOARD UNIT C F CN903 ...
Page 30: ...30 DEH P720 P7200 1 2 3 4 1 2 3 4 D C B A A A TUNER AMP UNIT E E E E E E IC Q ...
Page 31: ...31 DEH P720 P7200 5 6 7 8 5 6 7 8 D C B A A SIDE B E E E E E ...
Page 32: ...32 DEH P720 P7200 1 2 3 4 1 2 3 4 D C B A 4 2 FM AM TUNER UNIT B SIDE A B FM AM TUNER UNIT A ...
Page 33: ...33 DEH P720 P7200 1 2 3 4 1 2 3 4 D C B A B SIDE B B FM AM TUNER UNIT ...
Page 37: ...37 DEH P720 P7200 1 2 3 4 1 2 3 4 D C B A SIDE B D CLAMP CONTROL UNIT D ...
Page 50: ...50 DEH P720 P7200 Grating waveform Ech Xch 20mV div AC Fch Ych 20mV div AC 45 0 75 60 30 90 ...
Page 61: ...61 DEH P720 P7200 PML004AF GND VIN VOUT 3 2 1 S 81250SGUP PA2028A 7 2 IC ...
