BBK bbk940S, Service Manual

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MT1336
PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE
87 RFGCU Analog RF AGC loop capacitor connecting for DVD -RAM
86 RFGCI Analog RF AGC loop capacitor connecting for DVD -RAM
101 MA
Analog Input DC coupled DVD-RAM main-beam RF signal input A
102 MB Analog Input DC coupled DVD-RAM main-beam RF signal input B
103 MC Analog Input DC coupled DVD-RAM main-beam RF signal input C
104 MD Analog Input DC coupled DVD-RAM main-beam RF signal input D
105 SA Analog Input DC coupled DVD-RAM sub-beam RF signal input A
106 SB Analog Input DC coupled DVD-RAM sub-beam RF signal input B
110 SC Analog Input DC coupled DVD-RAM sub-beam RF signal input C
111 SD Analog Input DC coupled DVD-RAM sub-beam RF signal input D
108 IR Analog External current bias resistor (R=20K)
119 AGC1 Analog Wobble AGC loop1 capacitor
121 AGC2 Analog Wobble AGC loop2 capacitor
122 AGC3 Analog Wobble AGC loop3 capacitor
127 RFSUBO Analog output Header push-pull RF output signal
1 WOBSO Digital output Wobble signal output
6 RFOP Analog output RF positive output
7 RFON Analog output RF negative output
TRACKING ERROR
32 DPFN Analog DPD amplifier negative input
33 DPFO Analog DPD amplifier output
61 DPDMUTE Digital input DPD mute control input
116 TNI Analog Input 3 beam satellite PD signal negative input
115 TPI Analog Input 3 beam satellite PD signal positive input
21 TEO Analog Output Tracking error output
FOCUSING ERROR & RF LEVEL & CENTRAL SERVO SIGNAL
112 CDFOP Analog Input CD focusing error positive input
113 CDFON Analog Input CD focusing error negative input
18 FEO Analog Output Focusing error output
19 LVL Analog Output RF level output
20 CSO Analog output Central servo signal output
ALPC
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