Service manual

66
HCD-GNZ55D
• IC Pin Descriptions
IC102 CXD9849R (CD/DVD RF AMP, FOCUS/TRACKING ERROR AMP, DVD SYSTEM PROCESSOR,
DIGITAL SERVO PROCESSOR) (DMB15 BOARD (3/5))
Pin No. Pin Name I/O Pin Description
1AGND — Ground pin
2DVDA I AC coupled input path A
3DVDB I AC coupled input path B
4DVDC I AC coupled input path C
5DVDD I AC coupled input path D
6DVDRFIP I AC coupled DVD RF signal input RFIP
7DVDRFIN I AC coupled DVD RF signal input RFIN Not used in this set. (Open)
8NAIDC coupled main-beam RF signal input A
9NBIDC coupled main-beam RF signal input B
10 MC I DC coupled main-beam RF signal input C
11 MD I DC coupled main-beam RF signal input D
12 SA I DC coupled sub-beam RF signal input A Not used in this set. (Open)
13 SB I DC coupled sub-beam RF signal input B Not used in this set. (Open)
14 SC I DC coupled sub-beam RF signal input C Not used in this set. (Open)
15 SD I DC coupled sub-beam RF signal input D Not used in this set. (Open)
16 CDFON I CD focusing error negative input Not used in this set. (Open)
17 CDFOP I CD focusing error positive input Not used in this set. (Open)
18 TNI I 3 beam satellite PD signal negative input
19 TPI I 3 beam satellite PD signal positive input
20 MDI1 I Laser power PD monitor signal input
21 MDI2 I Laser power PD monitor signal input
22 LDO2 O Laser drive signal output
23 LDO1 O Laser drive signal output
24 SVDD3 — Power Supply pin (+3.3 V)
25 CSD O
Central servo, Positive main beam summing signal output
Not used in this set. (Open)
26 RFLVL O
RFRP low pass, or Positive main beam summing signal output
Not used in this set. (Open)
27 SGND — Ground pin
28 V2REFO O Reference voltage 2.8 V
29 V2O O Reference voltage 2.0 V
30 VREFO O Reference voltage 1.4 V
31 FEO O Focus error monitor signal output Not used in this set. (Open)
32 TEO O Tracking error monitor signal output Not used in this set. (Open)
33 TEZISLV O TE Slicing Level Not used in this set.
34 OPOUT O Op amp output Not used in this set. (Open)
35 OPIN I Op amp negative input Not used in this set. (Open)
36 OPIN I Op amp positive input Not used in this set. (Open)
37 DMO O Disk motor control signal output. PWM signal output
38 FMO O Feed motor signal control. PWM signal output
39 TROPENPWM O Tray PWM output/Tray open signal output.
40 IOPMON I General PWM signal input
41 TRO O Tracking servo signal output
42 FOO O Focus servo signal output
43 DVSS — Ground pin
44 NC — Not used. (Open)
45 NC — Not used. (Open)
46 DVDD3 — Power Supply pin (+3.3 V)
47 SPFG I Motor Hall sensor signal input
48 DSEL O Select signal output