Technics SL-HD550, Руководство по обслуживанию

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Pin
No.
Terminal
Name
I/O Function
25 ECS O
Turntable motor drive signal
output
(Servo error signal)
26 KICK - Kick pulse output (Not used,
open)
27 TRD O Tracking drive signal output
28 FOD O Focus drive signal output
29 VREF I D/A drive output normal voltage
input
30 FBAL O Focus balance adj. output
31 TBAL O Tracking balance adj. output
32 FE I Focus error signal input
33 TE I Tracking error signal input
34 RFENV I RF envelope signal input
35 VDET I Oscillator detect signal input (H:
detect)
36 OFT I Off track signal input (H: Off
track)
37 TRCRS I Track cross signal input
38 /RFDET I RF detect signal input (L: detect)
39 BDO I Dropout detection signal input
(H: dropout)
40 LDON O Laser power control signal
output (H: ON)
41 PLLF2 - PLL loop filter terminal (Not
used, open)
42 DSLF2 O DSL loop filter terminal
43 WVEL -
Double velocity status signal
output
(Not used, open)
44 ARF I RF signal input
45 IREF I Reference current input
46 DRF I DSL bias terminal
47 DSLF I/O DSL loop filter terminal
48 PLLF I/O PLL loop filter terminal
49 VCOF -
VCO loop filter terminal
(Not used, connected to GND)
50 AVDD 2 I Power supply terminal
51 AVSS 2 - GND terminal
52 EFM - EFM signal (Not used, open)
53 PCK - PLL extract clock (Not used,
open)
54 VCOF2 -
VCO loop filter terminal
(Not used, connected to GND)