Sharp XL-3000 Service Manual download pdf (Page 50)

XL-3000/3000C

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39 AVDD Input Analog system power terminal.

40 RFCT Input RFRP signal center level input terminal.

41 RFZI Input RFRP zero cross input terminal.

42 RFRP Input RF ripple signal input terminal.

43 FEI Input Focus error signal input terminal.

44 SBAD Input Sub-beam addition signal input terminal.

45 TSIN Input Test input terminal. To be fixed to Vref usually.

46 TEI Input Tacking error input terminal. (Tracking servo ON: Taking-in).

47 TEZI Input Tracking error, zero cross input termina.l

48 FOO Output Focus equalizer output terminal.

49 TRO Output Tracking equalizer output terminal.

50 VREF Input Analog standard power terminal.

51 RFGC Output RF amplitude adjustment control signal output terminal.

3-value PWM signal is output. (PWM carrier = 88.2 kHz)

52 TEBC Output Tracking balance control signal output terminal.

3-value PWM signal is output. (PWM carrier = 88.2 kHz)

53 FMO Output Feed equalizer output terminal. 3-value PWM signal is output. (PWM carrier = 88.2 kHz)

54* FVO Output Speed error signal or feed search EQ output terminal.

3-value PWM signal is output. (PWM carrier = 88.2 kHz)

55 DMO Output Disc equalizer output terminal.

3-value PWM signal is output. (PWM carrier = DSP system 88.2 kHz, sync with PXO)

56 2VREF Input Analog standard power terminal (2xVREF)

57 SEL Output APC circuit ON/OFF signal output terminal.

When laser is ON and UHS = L, "Hi-Z". When UHS = H, "H" output is obtained.

58* FLGA Output Internal signal monitor external flag output terminal.

TEZC, FOON, FOK and RFZC signals can be selected with command.

59* FLGB Output Internal signal monitor external flag output terminal.

DFCT, FOON, FMON and RFZC signals can be selected with command.

60* FLGC Output Internal signal monitor external flag output terminal.

TRON, TRSR, FOK, and SRCH signals can be selected with command.

61* FLGD Output Internal signal monitor external flag output terminal.

TRON, DMON, HYS and SHC signals can be selected with command.

62 VDD Input Digital + power terminal.

63 VSS — Digital ground terminal.

64* IO0 Input/Output General-use I/O port.

65* IO1 The input port and output port can be selected with command. In case of input port the terminal

66* IO2 state (H/L) can be read with the read command.

67* IO3 In case of output port the terminal state (H/L/HiZ) can be controlled with command.

68* /DMOUT Input Terminal to set the mode to output 2-value PWM of feed equalizer from IO0,1 terminal and 2-

value PWM of disc equalizer from IO2,3 terminal. "L" active

69* /CKSE Input To be opened usually.

70* /DACT Input DAC test mode terminal. To be opened usually.

71 TESIN Input Test input terminal (externally provided VCO clock input terminal). To be fixed to "L" usually.

72 TESIO1 Input Test input/output terminal. To be fixed to "L" usually.

73 VSS — Digital ground terminal.

74 PXI Input DSP system clock oscillation circuit input terminal. To be fixed to "L" usually.

75* PXO Output DSP system clock oscillation circuit output terminal.

76 VDD Input Digital + power terminal.

77 XVSS — System clock oscillation circuit ground terminal.

78 XI Input System clock oscillation input terminal.

79 XO Output System clock oscillation circuit output terminal.

80 XVDD Input System clock oscillation circuit + power terminal.

81 DVSR Input R channel D/A converting section power terminal.

82 RO Output R channel data forward rotation output terminal.

IC802 VHiTC9462F/-1: Servo/Signal Control (TC9462F) (2/3)

Pin No.

Port Name

Function

Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 63 64

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Sharp XL-3000 Service Manual Page 50

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