Sony D-V55, Руководство по обслуживанию

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• MAIN BOARD IC801 MSM65354-418GS-BK4 (SYSTEM CONTROLLER, LCD DRIVER, KEY CONTROL)
Pin No. Pin name I/O Description
1-4 COM1-4 O Common drive signal output to the liquid crystal display.
5-19 SEG0-14 O Segment drive signal output to the liquid crystal display.
20-36 NC – Not used (open).
37 AGND – Ground terminal (analog system).
38 DC IN JACK I DC IN 6V jack (J801) detection input terminal. “L”: plug in
39 DOOR OPEN I
CD lid open/close detection switch (S804) input terminal The stop status is reset with the
falling edge of input signal. “H”: CD lid open, “L”: CD lid close
40 KEY IN1 I Key input terminal (A/D input).
41 XRM KEY IN I Remote control key input terminal (A/D input).
42 DC CHK I DC in voltage detection input terminal (A/D input) Also used for DC IN detection
43 NTSC/PAL I Video system select switch (S803) input terminal “L”: NTSC, “H”: PAL
44 BATT CHK I Battery check terminal.
45 KEY IN2 I Key input terminal (A/D input).
46 VRH I Reference voltage input terminal (+3.3V) (for A/D converter).
47 AVDD – Power supply terminal (+3.3V) (analog system).
48 DBB CTL1 O
MEGA BASS on/off control signal output to the BA3574BFS (IC361).
“L”: MEGA BASS on (level-1 and level-2)
49 AU-MUTE O Analog line mute control signal output terminal . “H”: mute on
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50 XAU-RESET O Reset signal output to the CXD2545Q (IC601) and D-RAM controller (IC681). “L”: reset
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51 XV-RESET O
Reset signal output to the MPEG audio/video decoder (IC701) and video encoder (IC721).
“L”: reset
52 HOLD I HOLD switch (S802) input terminal. “L”: hold off, “H”: hold on
53 RESUME I RESUME switch (S801) input terminal. “L”: resume off, “H”: resume on
54 XDSPLT O Serial data latch pulse signal output to the CXD2545Q (IC601).
55 XDACLT O Serial data latch pulse signal output to the D/A converter (IC322).
56 V-POWER O Video CD system power supply on/off control signal output terminal. “L”: power on
57 AU-POWER O Audio CD system power supply on/off control signal output terminal. “L”: power on
58 ESP-POWER O Control signal output to the ESP (Electronic Shock Protection) circuit.
59 TRVCTL O Tracking gain control signal output terminal.
60 TRV3 O
61 TRV2 O
Tracking balance control signal output terminal.
62 TRV1 O
63 TRV0 O
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64 XSOE O Serial data output enable signal output to the D-RAM controller (IC681).
65 DSP-SUBQ I Sub-code Q data signal input from the CXD2545Q (IC601).
66 DSP-SBQCLK O Sub-code Q data reading clock signal output to the CXD2545Q (IC601).
67 REMOTE I Sircs remote control signal input from the remote control receiver (IC1).
68 DSP-DATA O Serial data output to the CXD2545Q (IC601) and D/A converter (IC322).
69 DSP-SENS I Internal status (SENSE) signal input from the CXD2545Q (IC601).
70 DSP-CLK O Serial data transfer clock signal output to the CXD2545Q (IC601) and D/A converter (IC322).
71 DSP-SNSCLK O Sense serial data reading clock signal output to the CXD2545Q (IC601).
72 VDD – Power supply terminal (+3.3V) (digital system).
73 BEEP O Beep sound drive signal output terminal.
74 C2PO O C2PO signal control output to the D-RAM controller (IC681). “L”: stop mode, “H”: searching
75 ESP-CLK O Serial data transfer clock signal output to the D-RAM controller (IC681).