5-1-4 Tracking Sled Servo System (KA9220) : WIC01
The capacitor between pins 15 and 16 attenuates high frequencies when TG2 is off. The maximum frequency of
tracking phase compensation is inversely proportional to the resistance connected to pin 7 (about 1.2kHz at 470k).
The tracking jump (FWD and REV) is determined when TM3 and TM4 are ON, and the peak voltage induced from
tracking coil is decided by both TM3 and TM4 current values and feedback resistance of pin 47.
Tracking jump max voltage = TM3 (TM4) current x feedback reisistance.
FWD or REV sled kick occurs when TM5 or TM6 is ON, and the peak voltage added to sled motor is decided by
TM5 or TM6 current and the feedbadk resistance of pin 41.
Sled jump max voltage= TM5 (TM6) current x feedback resistance
Each SW current is decided by the resistance connected to pin 22 and 23.
When the resistance is about 150½,
TM3 or TM4 = 11µA,
TM5 or TM6 = 22µA,
This current is inversely proportional to the resistor, variable within a range of 5 to 40µA for TM3.
STOP is the ON/OFF detection signal for the limit SW (or the sled motorÕs innermost cirumference).
22
23
40
41
39
47
48
7
15
16
54
52
50
51
0.022UF
TZC
0.047UF
150K
BPF
1K
1K
TZC
100K
ATC
20K
TE 1
TE2
470K
100K
ATS
TDFC1
0.1UF
680K
66PF
10K
DFCT
0.1UF
RTG
20K
TGSW
470K
TG2
82K
110K
PHASE
COMPENSATION
S STOP
1K
100K
S STOP
SLED
SLEI
SLEN
10K
56K
100K
ISET
VREG
180K
SLED
DRIVER
120K
100K
TKEO
TKEI
TM2
TM6
TM5
TM4
5.5U
TM3
5.5U
10K
90K
TM7
PFSET
470K
8
TRACKING
COIL
Special Circuit Descriptions
5-2
Samsung Electronics
Содержание MAX-632P
Страница 2: ...ELECTRONICS Samsung Electronics Co Ltd Jan 1997 Printed in Korea Code no AH68 20140A ...
Страница 55: ...10 PCB Diagrams 10 1 Main Samsung Electronics 10 1 ...
Страница 56: ...10 2 Samsung Electronics PCB Diagrams ...
Страница 57: ...10 2 Front PCB Diagrams Samsung Electronics 10 3 ...
Страница 58: ...10 3 Pro Logic Power PCB Diagrams 10 4 Samsung Electronics ...
Страница 59: ...10 4 CD PCB Diagrams 10 4 1 Top View 10 4 2 Bottom View Samsung Electronics 10 5 ...
Страница 60: ...PCB Diagrams 10 4 3 SUB 10 6 Samsung Electronics ...
Страница 63: ...12 2 Front Schematic Diagrams 12 2 Samsung Elctronics UIC2 UIC3 ...
Страница 64: ...12 3 Pro Logic Schematic Diagrams Samsung Electronics 12 3 DPIC7 DPIC4 DPIC5 DPIC3 ...