Sony HCD-XB4 - PANEL BOARD IC601 TMP87 CH74 (DISPLAY CONTROL)

– 85 –
1-6 LED3-LED8 O LED driver output
7 VSS – Ground
8 X-OUT O
X’tall (8MHz)
9 X-IN I
10 RESET I Reset signal input from main controller
11 LED 9 O
12 LED10 O Connected ground
13 TEST I
14-19 LED11-LED19 O LED driver output
20 VOL-A I Rotary encoder (S701 VOLUME) pulse input
21 DOOR SW I DOOR SW (S651) ON/OFF signal input
22 JOG-A I Rotaly encoder (S711 AMS) pulse input
23 CLOCK I Serial clock input from main controller
24 DATA I Serial data input from main controller
25 LED SELECT O LED select signal output
26 MODEL I Version select signal input
27-30 KEY1-KEY4 I Key input
31 SPEANA-3 I Connected ground
32 L + R I Spectrum analyzer (high frequency) input
33 SIRCS I Remote commander signal input
34 VOL-B I Rotary encoder (S701 VOLUME) pulse input
35 JOG-B I Rotary encoder (S711 AMS) pulse input
36 SPEANA-1 I Spectrum analyzer (Low frequency) input
37 SPEANA-2 I Spectrum analyzer (Middle frequency) input
38 VASS – Ground
39 VAREF I Analog reference voltage input
40 VDD – Power supply (+5V)
41 — – Not used
42-56 GR1-GR15 O FL gride signal output
57-77 SEG1-SEG77 O FL segment signal output
78 VKK – –30V driving power for FL
79, 80 LED1-LED2 O LED driver output
Pin No. Pin Name I/O Function
PANEL BOARD IC601 TMP87CH74 (DISPLAY CONTROL)