Samsung Electronics3-6
Alignment and Adjustment
3-1-4. PRML Adjustment
Address
Function
MODE
SP
00
PGC/SQPI/FIRO
IDO/DOD/ATFAQ/FIR4
GDH0/FIR1H0
GDH1/FIR1H1
LPGC/DA TF/PGCEN/TDOI/FIR3H0
BPGC/FCLP/FIR3H1
LTG/LPGC/BPLG/TC13/TC2/FIR2
A TFFC/AGCT AR/A TFHG/HGSEL/SLEEP
DDOSC/SEFTH/DLZI/T ADAPT/VIT
ATFSEL/SYMC/DAMP
HLD/FCHO/BSTH0
CMXEN/FCH1/BSTH1
EZCNT/LPFBYP/PDTST/...
ATGH0/TCTCH0/TP1SEL
FRQ/RLZSEL/...
ATGCH1/TCTCH1/TSEL
AE/DZ/INTL/.../TWR
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
24
1. How to set up PRML Adjustment Mode
0C0
000
000
000
400
600
805
#00
21E
223
004
28A
28A
865
860
00C
FA2
0C0
000
2C0
2C0
400
600
805
#00
A1E
223
004
28A
28A
865
860
00C
7A2
0C0
000
2C0
2C0
400
600
805
#00
226
223
004
28A
28A
865
860
00C
FA2
0C0
000
2C0
2C0
400
600
805
#00
A26
223
004
28A
28A
835
830
00C
7A2
2. BER Adjustment Specifications (Reference)
1) Get into the VCR adjustment mode.
; Press and hold the “PLAY”button and “DOWN”button at the same time for more than 10 seconds.
2) Turn off Adaptive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A2 ;REG24
3) Find out the optimally minimum BER value in REG. 12 BOOST.
start values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28A ;REG12
The optimum means the number of error is less than 10 ea. ;Current SCD55/VP-
D55 manufacturing
standard
If the minimum value is as the followings, designate as the right values.
Min . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ;Selection valueless
less than 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 ;REG12 ===24A
19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 ;REG12 ===26A
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 ;REG12 ===28A
21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 ;REG12 ===2AA
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