Daewoo DG-K301, Service Manual

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5
CIRCUIT OPERATIONAL DESCRIPTION
Pin Descriptions
Pin No. Pin name Function
IN CH(Focus coil) input
2 DL Linear Regulator 3V3 driver output
3 FB2 Linear Regulator 2 feedback input
4 IN2 CH2(Sled driver) input
5 3V3 Linear Regulator 3V3 input(Metal Option possible for other voltage from
2.5V~4V)
6 FWD CH5 forward input
7 REV CH5 reverse input
8 VCC Power Supply
9 OUT5- CH5(Tray driver) output(-)
0
OUT5+ CH5(Tray driver) )
OUT2+ CH2(Sled driver) output (+)
2 OUT2- CH2(Sled driver) output (-)
3 OUT- CH(Focus coil) output (-)
4 OUT+ CH(Focus coil) output (+)
5 OUT4+ CH4(Tracking coil) output (+)
6 OUT4- CH4(Tracking coil) output (-)
7 OUT3+ CH3(Spindle) output (+)
8 OUT3- CH3(Spindle) output (-)
9 VCC2 Power Supply 2
20 CPIP Comparator positive input
2 VCTL CH5 Speed control input
22 CPIN Comparator negative input
23 IN3 CH3(Spindle) input
24 CPO Comparator Output
25 DL2 Adjustable Linear Regulator driver output
26 IN4 CH4 (Tracking driver) input
27 VBIAS VREF input pin
28 MUTE__2_3_4 Mute control for CH,CH2,CH3,CH4
Notes: The indicated polarities for the output pins are under the condition that all inputs
are (+). The power supplies for the driver output are Vcc for the loader, Vcc2 for
focus and tracking drivers, and Vcc for pre-block and sled driver. Therefore, make
sure Vcc≥Vcc2.