Pin Name
Signal flow
direction
DVD disc CD disc No disc Function description
1 F- Input loader 2.52 2.34 0.46
2 F+ Input loader 2.49 2.49 0.93
3 T+ Input loader 2.53 2.51 0.94
4 T- Input loader 2.58 2.51 0.93
5 C Input MT1389 2.2 2.25 2.04 Disc data signal
6 D Input MT1389 2.2 3.2 2.04 Disc data signal
7 IOA Input MT1389 0.01 3.2 3.21
Disc identification signal, CD is 3.3V, DVD
is 0V
8 RF Input MT1389 2.21 2.53 1.28 The sum of disc data signal
9 A Input MT1389 2.17 2.22 2.04 Disc data signal
10 B Input MT1389 2.19 2.27 2.04 Disc data signal
11 F Input MT1389 2.07 2.44 2.03 Supplementary signal used in trace
12 GND Ground 0.01 0.01 0 Grounding
13 V20 Input loader 2.04 2.06 2.03 Reference voltage
14 Vcc Input loader 5.04 5.04 5.02 Supply voltage for loader
15 E Input MT1389 2.06 2.45 2.03 Disc data signal
16 Blanking haning in air 0.01 0 0 unused
17 VR-CD Input loader 0.21 0.01 0
Through the handling inside loader, make
sure MD11 is 180mV when reading CD
18 VR-DVD Input loader 0.01 0.2 0
Through the handling inside loader, make
sure MD11 is 180mV when reading DVD
19 LD-CD Input loader 0.09 2.1 0 CD laser power control signal
20 MDII Input MT1389 0.21 0.2 0 CD and DVD laser power monitoring signal
Focus error signal is added to two sides of
pick-up focus coil
Trace error signal is added to two sides of
pick-up trace coil
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