Technics ST-HD501

FLD15
terminal
Pin
No.
Mark I/O /
Division
Function
74
~
80
P56/
FLD14
~
P50/
FLD8
O FL grid control output
teminal
81
~
86
P67/
FLD7
~
P62/
FLD2
O FL grid control output
terminal
87 P61/
FLD1
O FL grid control output
terminal
(Not used, open)
88 P60/
FLD0
O FL grid control output
terminal
89 VEE I Power supply termianl
90
~
92
P107/
AN7
~
P105/
AN5
— Connected to GND
93 P104/
AN4
O Muting output terminal
(“H”: OFF, “L”: ON)
94
~
96
P103/
AN3
~
P101/
AN1
I Amplfier input terminal
97 AVSS — Connected to GND
98 P100/
AN0
I Key switch input terminal
99 VREF I Power supply terminal
100 AVCC
11. Replacement Parts List
Note:
*Important safety notice:
Components identified by mark have special characteristics important for safety.
Furthermore, special parts which have purposes of fireretardant (resistors), high-quality sound
(capacitors), low-noise (resistors), ets. are used.
When replacing any of components, be sure to use only manufacture’s specified parts shown in
the parts list.
*The parenthesized indications in the Remarks columns specify the areas.
15