59
6-2. AUTO CHECK (AUTOMATIC VARIOUS MEASUREMENTS)
The auto check is performed to check if the set operates stably. Though a checking is made automatically, whether the measured data are
within the specification is evaluated by the service person. The auto check results in NG immediately, if the check itself causes an error.
Setting Method of Auto Check Mode:
1. After setting the test mode, rotate the
[ AMS ]
dial to select “92. SET CHECK” and press the
[ AMS ]
dial to enter.
2. When “SET TEST START” is displayed, rotate the
[ AMS ]
dial clockwise by 2 clicks to select “1. TOTAL CHECK?”
and press the
[ AMS ]
dial to enter.
3. When “10. TOTAL CHECK” is displayed, rotate the
[ AMS ]
dial clockwise by 1 click to select “11. AUTO CHECK?”.
CD and SACD (SL) Disc Operation Check
Checking method:
1. Press the
[OPEN/CLOSE]
button to open the tray and place the test disc *1. The
[OPEN/CLOSE]
key is disabled immediately after the
machine enters the TEST mode. Be sure to initialize the table.
2. Press the
[ AMS ]
dial, and the following check will be performed automatically.
3. Finally, the test disc will be ejected and the auto check will finish.
4. “AUTO CHECK OK” will be displayed at successful completion of auto check.
5. Recheck is enabled if the
[ AMS ]
dial is pressed in step 4. (Also, use this operation when exchanging the test disc)
6. In case of an error during the checking, the check is interrupted automatically and the error is displayed. (Error display example:
“DISC DETECT ERROR”) After error display, “CONT?STOP (J/S)” is displayed. In this case, if the
[ AMS ]
dial is pressed,
the check where the error occurred is skipped and you can proceed to the next check. Also,
x
if button is pressed, the check finishes
and “AUTO CHECK NG” is displayed when even one NG item exists.
*1 Use PATD-012 or YEDS-18 for CD, and SATD-S4 for SACD (SL). Using another disc will result in a checking failure.
Check Items:
Items
Description
Remarks
LOAD IN TIME (msec)
Time until a disc is chucked from the state where loading tray is out
Loading in switch H
t
L
SPIN UP TIME (msec)
Time from spindle kick to PLL lock
Lock signal L
t
H
RF/VC/FE/TE (ORG)
Offset values before RF (PI), VC, FE, TE signal offset adjustment
At offset 0
RF (8 bit data in hex notation)
RF: A0h
VC, FE, TE (9 bit data in hex notation)
VC, FE, TE: 00h
RF/VC/FE/TE (ADJ)
Offset values after RF (PI), VC, FE, TE signal offset adjustment
VC offset is not adjusted
(Less than ORG value if offset correction is normal)
(Measurement only)
RF (8 bit data in hex notation)
Also, for SACD, the TE offset is
VC, FE, TE (9 bit data in hex notation)
not measured and adjusted
PI/TRVS PP (ORG/ADJ)
PI (ORG): PI value at disc type check (decimal data)
PI level conversion
PI (ADJ): PI value after PI offset adjustment
Read value
×
12.9mV
(read value at microcomputer A/D) (decimal data)
TRVS PP (ORG): Traverse level before level correction (AGC)
Traverse level conversion
(decimal data)
Read value
×
12.9mV
TRVS PP (ADJ):Traverse level after level correction (AGC)
(decimal data)
12.9mV=3.3V ÷ 256 (8 bit)
PIOR/CCR/TRCR
PIOR: Set value of PI offset coarse adjusting register
Registers in RF amplifier
CCR: Set value of FE offset coarse adjusting register
TRCR: Set value of TE offset coarse adjusting register
FOCUS/TRK GAIN
Auto gain adjusted values of focus and tracking servos
Reference: 30h
(8 bit data in hex notation)
FBIAS/TRVSC/TRCR2/CFR
FBIAS: Focus bias set value (9 bit data in hex notation)
TRCR2 adjusts the E-F gain
TRVSC: Traverse center value (9 bit data in hex notation)
balance and used for CD only
TRCR2: Set value of E-F balance coarse adjusting register
(Fixed to 06 for SACD)
CFR: Set value of traverse level adjusting register
TRCR2 and CFR are registers in
RF amplifier
MIN JITTER AT F.BIAS
Minimum jitter value in focus bias adjustment (CD only)
Correlative with RF jitter
READ TOC TIME (msec)
Time required for TOC reading
PSP AMPLITUDE
SACD only
1/3 SEEK TIME
Seek time between 1/3LBA and 2/3LBA of the disc
LBA: Absolute address
F) AVE/MIN/MAX (msec):
1/3LBA
t
2/3LBA average/minimum/maximum
R) AVE/MIN/MAX (msec):
2/3LBA
t
1/3LBA average/minimum/maximum
1/MAX SEEK TIME
Seek time between most inward track (0LBA) and most outward track max
LBA
F) AVE/MIN/MAX (msec):
most inward
t
most outward average/minimum/maximum
R) AVE/MIN/MAX (msec):
most outwar
t
most inward average/minimum/maximum
ERROR RATE
Error rate measurement
Measure for 10 sec at track No.5
For CD: Average value/Maximum value of C1 and C2
For the SACD, 160 block data
For SACD: Average value/Maximum value of PO, PI1 and PI2
except the data under tracking jump
l
L
l
L
l
L
l
L
l
L
l
L
l
L
l
L
Summary of Contents for SCD-C333ES - Super Audio Cd Changer
Page 18: ...SCD C333ES 18 18 4 2 SCHEMATIC DIAGRAM RF SECTION Refer to page 40 for Waveforms ...
Page 28: ...SCD C333ES 28 28 4 12 SCHEMATIC DIAGRAM AUDIO SECTION 2 3 ...
Page 29: ...SCD C333ES 29 29 4 13 SCHEMATIC DIAGRAM AUDIO SECTION 3 3 ...
Page 34: ...SCD C333ES 34 34 4 18 SCHEMATIC DIAGRAM HP SECTION ...
Page 36: ...SCD C333ES 36 36 4 20 SCHEMATIC DIAGRAM SENSOR SECTION Refer to page 45 for IC Block Diagram ...
Page 38: ...SCD C333ES 38 38 4 22 SCHEMATIC DIAGRAM POWER SECTION ...
