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FUNCTION DESCRIPTION
Tracking System
The tracking error output of E and F is given to Pin 25 (TEOUT). C8 is required for
oscillation-proof. R10 is chosen such that TEOUT of Pin 25 become 1.4Vp-p.
During alignment procedure, the DSP IC (MN662790) will adjust the tracking balance
voltage V
TBAL
from Pin 31. V
TBAL
varies with reference to the center voltage V
REF2
(=1.65 V)
within
±
0.5 V.
The tracking gain will change according to the type of disc. For normal disc or CDR disc,
V
GCTRL
is set to V
REF2
; for CDRW disc V
GCTRL
is set to V
REF2
- 0.75 V. At the same time, the
focus gain is changed too.
A
B
C D
F
PDIC
E
32
31
28
21
30
23
25
24
GCTRL
To Focus System
TBAL
Subtraction
R10
TEN
C8
TEOUT
V
GCTRL
C2
C15
C5
R5
V
REF1
V
REF2
R15
R14
V
TBAL
FL8380
FL8385
harman/kardon
16
Содержание FL 8385
Страница 11: ...FL8385 FL8385 harman kardon 11 ...
Страница 12: ...FL8385 12 ...
Страница 13: ...FL8385 BLOCK DIAGRAM AN4801 FL8385 harman kardon 13 ...
Страница 20: ...FL8380 FL8385 harman kardon 20 ...
Страница 21: ...FL8380 FL8385 harman kardon 21 ...
Страница 22: ...FL8380 FL8385 harman kardon 22 ...
Страница 23: ...FL8380 FL8385 harman kardon 23 ...
Страница 24: ...FL8380 FL8385 harman kardon 24 ...
Страница 25: ...FL8380 FL8385 harman kardon 25 ...
Страница 46: ...FL8380 FL8385 harman kardon 46 ...
Страница 60: ...FL8385 harman kardon 60 ...
Страница 61: ...FL8385 harman kardon 61 ...
Страница 62: ...FL8385 MAIN BOARD FL8385 harman kardon 62 ...
Страница 63: ...FL8380 FL8385 harman kardon 63 ...
Страница 64: ...harman kardon 64 ...
Страница 65: ......
Страница 66: ...an kardon ...
Страница 67: ...4883 800260 001 FL8385 VFD BOARD VDF BOARD POWER BOARD FL8385 harman kardon 67 ...
Страница 68: ...REMOTE IN OUT BOARD FL8385 harman kardon 68 ...
Страница 69: ...4560 4560 4560 HEADPHONE BOARD FL8385 harman kardon 69 ...