Sony PLM-A55E Service Manual page 39

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