Sony WM-FX855 Service Manual page 21

• AUDIO BOARD IC701 MB89133LPFV-G-418BND (SYSTEM CONTROL (MAIN))
Pin No. Pin Name I/O
1 AVCC —
2 RESET I
3 MODE0 I
4 MODE1 I
5 XO —
6,7 NC —
8 X1 —
9 VCC —
10 XOA —
11,12 NC —
13 X1A —
14 AMP/CE CTL O
15 RQT O
16 F/R CTL O
17 NC —
18 BOOST ON/OFF O
19 MB/GRV SW O
20, 21 NC —
22 AVLS SW O
23 PHOTO CTL O
24 MOTOR CTL O
25 VSS —
26 MOTOR DIR O
27 MOTOR BRK O
28 NC —
29 PHOTO IN I
30 NC —
31 MODE SW I
32 NC —
33 LOAD CTL O
34 A/B SW I
35,36 NC —
37 RADIO ON I
38,39 NC —
40 AMS IN I
41 AMS SENSE O
42 SET STOP I
43 RMUM O
44,45 NC —
46 PM CTL O
Power supply terminal (A/D converter)
Input of RESET signal
Test input terminal (fixed at " L ")
Test input terminal (fixed at " L ")
Main clock connection terminal (4 MHz)
Not used for this set (Open)
Main clock connection terminal (4 MHz)
Power supply terminal
Sub clock connection terminal (fixed at " L ")
Not used for this set (Open)
Sub clock connection terminal (Not used for this set)
Output of audio amplifier power supply control
Output of request signal for µPD17073 communication
Output of head switching signal " H ": FWD, " L ": REV
Not used for this set (Open)
Output of tone control " L ": OFF, " H ": Mega Bass, Groove
Output of tone control " L ": Groove, " H ": Mega Bass
Not used for this set (Open)
Output of AVLS control " H ": OFF, " L ": ON
Output of rotation detect control signal
Output of motor control signal
Ground terminal
Output of motor rotating direction control signal
Output of motor control circuit control signal
Not used for this set (Open)
Input of rotation detect signal
Not used for this set (Open)
Input of tape run direction switching, and BL SKIP switch " L ": BL SKIP ON, endless
Not used for this set (Open)
Output of battery capacity detect circuit control signal " H ": ON, " L ": OFF
Input of tape A/B side detect switch (fixed at " L ")
Not used for this set (Open)
Input of radio control signal
Not used for this set (Open)
Input of music search signal " L ": Music not present, " H ": Music present
Output of AMS gain switching " L ": At PLAY, " H ": At AMS
Input of low voltage detection signal
Remote controller provided/not provided " H ": provided, " L ": Not provided
Not used for this set (Open)
Output of plunger control signal " H ": OFF, " L ": ON
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Function