Sony HCD-F50 Service Manual page 72

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PANEL BOARD IC601 TMP87CH75F-6541 (DISPLAY CONTROL)
Pin No. Pin Name I/O
1 SEG-35 O
2 V-LOAD –
3-10 LED1-LED8 O
11 VSS –
12 X-OUT O
13 X-IN I
14 RESET I
15, 16 LED9, LED10 O
17 TEST I
18 LED 11 O
19 LED 16 O
20-23 LED12-LED15 O
24 VOL-A I
25 AU-BUS-IN I
26 JOG-A I
27 CLOCK I
28 DATA I
29 LED 17 O
30 VDD –
31 VSS –
32 MODEL I
33-35 KEY1-KEY3 I
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L 13942296513
36, 37 LED 18, 19 O
38 AU-BUS-OTP –
39 SIRCS I
40 VOL-B I
41 JOG-B I
42-45 SPEANA 1-4 I
46 L + R I
47 LED 20 O
48 VASS –
49 VAREF I
50 VDD –
51-66 GR-1-GR-16 O
67-100 SEG-1-SEG-34 O
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Fluorescent display tube segment signal output
–30V for Fluorescent display tube
LED driver output
Ground
X'tal (8MHz)
X'tal (8MHz)
Reset signal input from master control
LED driver output
Connected ground
LED driver output
LED driver output
LED driver output
Rotaly encoder pulse input
AU-BUS signal input
Rotaly encoder pulse input
Serial clock input from master control
Serial data input from master control
LED driver output (Not used)
Power supply (+5V)
Ground
Connected ground
Key input
LED driver output
AU-BUS signal output
Remote commander signal input
Rotaly encoder pulse input
Rotaly encoder pulse input
Spectrum analyzer signal input
Spectrum analyzer (high frequency) input
LED driver output
Ground
Analog reference voltage input
Power supply (+5V)
Fluorescent display tube gride signal output
Fluorescent display tube segment signal output
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Function
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