Sony SCD-C555ES Service Manual page 64

SCD-C555ES
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
2. When "SET TEST START" is displayed, rotate the
[ AMS
and press the l
3. When "10. TOTAL CHECK" is displayed, rotate the
CD and SACD (SL) Disc Operation Check
Checking method:
[OPEN/CLOSE]
1. Press the
machine enters the TEST mode. Be sure to initialize the table.
[ AMS
l L
2. Press the
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
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
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-S5 or SATD-S4 for SACD (SL). Using another disc will result in a checking failure.
Check Items:
Items
LOAD IN TIME (msec)
SPIN UP TIME (msec)
RF/VC/FE/TE (ORG)
RF/VC/FE/TE (ADJ)
PI/TRVS PP (ORG/ADJ)
PIOR/CCR/TRCR
FOCUS/TRK GAIN
FBIAS/TRVSC/TRCR2/CFR
MIN JITTER AT F.BIAS
READ TOC TIME (msec)
PSP AMPLITUDE
1/3 SEEK TIME
F) AVE/MIN/MAX (msec):
R) AVE/MIN/MAX (msec):
1/MAX SEEK TIME
F) AVE/MIN/MAX (msec):
R) AVE/MIN/MAX (msec):
ERROR RATE
64
[ AMS ]
l L
[
l
]
L dial to enter.
[
button to open the tray and place the test disc *1. The [OPEN/CLOSE] key is disabled immediately after the
]
dial, and the following check will be performed automatically.
[ AMS ]
l L
dial is pressed in step 4. (Also, use this operation when exchanging the test disc)
Time until a disc is chucked from the state where loading tray is out
Time from spindle kick to PLL lock
Offset values before RF (PI), VC, FE, TE signal offset adjustment
RF (8 bit data in hex notation)
VC, FE, TE (9 bit data in hex notation)
Offset values after RF (PI), VC, FE, TE signal offset adjustment
(Less than ORG value if offset correction is normal)
RF (8 bit data in hex notation)
VC, FE, TE (9 bit data in hex notation)
PI (ORG): PI value at disc type check (decimal data)
PI (ADJ): PI value after PI offset adjustment
(read value at microcomputer A/D) (decimal data)
TRVS PP (ORG): Traverse level before level correction (AGC)
(decimal data)
TRVS PP (ADJ):Traverse level after level correction (AGC)
(decimal data)
PIOR: Set value of PI offset coarse adjusting register
CCR: Set value of FE offset coarse adjusting register
TRCR: Set value of TE offset coarse adjusting register
Auto gain adjusted values of focus and tracking servos
(8 bit data in hex notation)
FBIAS: Focus bias set value (9 bit data in hex notation)
TRVSC: Traverse center value (9 bit data in hex notation)
TRCR2: Set value of E-F balance coarse adjusting register
CFR: Set value of traverse level adjusting register
Minimum jitter value in focus bias adjustment (CD only)
Time required for TOC reading
Seek time between 1/3LBA and 2/3LBA of the disc
1/3LBAt2/3LBA average/minimum/maximum
2/3LBAt1/3LBA average/minimum/maximum
Seek time between most inward track (0LBA) and most outward track max
LBA
most inwardtmost outward
most outwartmost inward average/minimum/maximum
Error rate measurement
For CD: Average value/Maximum value of C1 and C2
For SACD: Average value/Maximum value of PO, PI1 and PI2
dial to select "92. SET CHECK" and press the
AMS ]
L
dial clockwise by 2 clicks to select "1. TOTAL CHECK?"
AMS ]
l L
dial clockwise by 1 click to select "11. AUTO CHECK?".
Description
average/minimum/maximum
[ AMS ]
l L dial to enter.
[ AMS ]
l L
dial is pressed,
Remarks
Loading in switch HtL
Lock signal LtH
At offset 0
RF: A0h
VC, FE, TE: 00h
VC offset is not adjusted
(Measurement only)
Also, for SACD, the TE offset is
not measured and adjusted
PI level conversion
Read value × 12.9mV
Traverse level conversion
Read value × 12.9mV
12.9mV=3.3V ÷ 256 (8 bit)
Registers in RF amplifier
Reference: 30h
TRCR2 adjusts the E-F gain
balance and used for CD only
(Fixed to 06 for SACD)
TRCR2 and CFR are registers in
RF amplifier
Correlative with RF jitter
SACD only
LBA: Absolute address
Measure for 10 sec at track No.5
For the SACD, 160 block data
except the data under tracking jump