Sony PLM-A55E, Руководство по обслуживанию

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YM-11P BOARD IC903 MB89098RPFV-G-167 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Function
1
TEST MODE 0 I
Setting terminal for the test mode (Normally: fixed at “L”)
2 TEST MODE 1 I Setting terminal for the test mode (Normally: fixed at “L”)
3 X0 I
Main system clock input terminal (10 MHz)
4 X1 O
Main system clock output terminal (10 MHz)
5 VSS — Ground terminal
6 RESET I
System reset signal input from the reset signal generator (IC904) “L”" reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
7 BB1 ON O
Bass boost control signal output terminal “H”: bass boost on Not used
8 BB2 ON O Bass boost control signal output to the headphone amplifier (IC504) “H”: bass boost on
9 PASSWORD RESET I Pass word reset switch (S901) input terminal Password is erased when “L” is input
10 AUDIO MUTE O
Audio line muting control signal output terminal “H”: muting on
11 VIDEO MUTE O Video muting control signal output terminal “H”: muting on
12 SURROUND O
Surround control signal output terminal “H”: surround on
13 CHECK MODE O
Screen check mode selection signal output terminal
“L”: screen check mode, “H”: normal mode
14 LANC POWER ON I Power supply control input of the LANC “L”: power on Not used (fixed at “H”)
15
BATT IN I
Power failure detection input terminal
16
PBV I
Vertical sync reference signal input from the character generator (IC101)
17 DD POWER O Power on/off control signal output to the DC/DC converter (IC301) “H”: power on
18
P13/E113 —
Not used (open)
19
BATT IN SW I
Battery pack detection switch input terminal “L”: battery pack present
20 P15 — Not used (open)
21 POWER SW I
Power switch (S701) input terminal (toggle input)
“L” is input when power is turned on/off
22
P17 —
Not used (open)
23 SYSTEM RESET O Reset signal output to the character generator (IC101) “L”: reset
24
POWER LED O
LED drive signal output of the POWER indicator (D701) “H”: LED on
25 CHARGE LED O
LED drive signal output of the CHARGE indicator (D702) “H”: LED on
26 CMOD I Selection input of the clock mode Fixed at “H” in this set
27 AVLS ON O
AVLS (Automatic Volume Limiter System) control signal output to the headphone amplifier
(IC504) “H”: AVLS on
28
BL ON O
Back light unit on/off control signal output terminal “H”: back light on
29 SH MUTE — Not used (open)
30
P27/RMCI —
Not used (open)
31 BATT CONT O
Output of main power control when rechargeable battery is used
“L”: use of DC adapter, “H”: use of rechargeable battery
32
BATT CHK O
Output of voltage check on/off control in charge mode “H”: voltage check on
33
DC IN MON I
DC IN detection input terminal “L”: DC present
34 BATT IN MON I
Dry battery pack detection input terminal “H” is input when battery pack is set
35
DIAL A PHASE I
Rotary encoder dial pulse input of the screen display/select/enter jog dial (S703)
(A phase input)
36
DIAL B PHASE I
Rotary encoder dial pulse input of the screen display/select/enter jog dial (S703)
(B phase input)
37 LED015 O LED drive signal output terminal Not used (open)
38
CS CAM O
Chip select signal output terminal Not used (open)