LG LHB976, Service Manual

Page: 191 / 193

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3. PICK-UP CONNECTOR TERMINAL PIN ASSIGNMENTS (LTH-A12)
PIN NO. PIN NAME DESCRIPTION FUNCTION
1 FCS2+
ACT
FO
2 FCS2- FOCUSING2-
3 TRK+ T
4 FCS1+ FO
5 TRK- TRACKING-
6 FCS1- FOCUSING1-
7 A-
CMU SHIFTER
Stepping Motor A-Terminal
8 B- Stepping Motor B-Terminal
9 A+ Stepping Motor A+Terminal
10 B+ Stepping Motor B+Terminal
11 PGND(NC)
PDIC
GND for PDIC(NC)
12 NC NC
13 NC(VCC) NC(Terminal for LG pick-up recognation)
14 A A output
15 B B output
16 C C output
17 D D output
18 SA SA output
19 SB SB output
20 SC SC output
21 SD SD output
22 NC NC
23 RF+ RF + output for BD and DVD, CD
24 RF- RF - output for BD and DVD, CD
25 SWB2 PDIC BD Output Switch Port
26 SWB1 PDIC BD Output Switch Port
27 VREF_PD PDIC Reference Supply Terminal 2.1 V
28 VCC_+5PD PDIC Power Terminal 5 V
29 PGND GND for PDIC
30 SW 2-Wavelength PDIC DVD/CD/Sleep(L/H/M) Changeover SW
31 GND1
LD
HFM IC
Monitor
GND for LD and HFM IC
32 LDI BD LD control for LD,BD
33 LDI CD LD control for LD,CD
34 LDI DVD LD control for LD,DVD
35 LGND GND for LD and HFM IC
36 TEMP Thermister
37 VCC Vcc for HFM IC 5 V
38 MON_CD/DVD Monitor Output for DVD & CD
39 MON_BD Monitor Output for BD
40 SEL_DVD Select Input for DVD Monitor(L:Enable)
41 SEL_CD Select Input for CD Monitor(L:Enable)
42 LGND(NC) GND for LD and HFM IC(NC)
43 NC GND for LD and HFM IC(NC)
44 LGND GND for LD and HFM IC
45 GND_BDPD GND for Back monitor PD,BD