10
DDX3028/3048/3058/318/4038/4038M
DDX4028BT/4038BT/4038BTM/4048BT/4058BT/418
Pin No.
Pin Name
I/O
Application
Processing / Operation / Description
108
PWIC_DC_DET
I
Power IC DC Offset detection input
Below threshold: Abnormal DC value
109
AN_TEMPCPU
I
Temperature data input for fan control
Threshold value not determined, Switch FAN ON/
OFF depending on the AD conversion value.
110~112 NC
O
Not used
113,114
NC
Not used
115
R_ENC1
I
Rotary encoder input terminal (CW)
116
R_ENC2
I
Rotary encoder input terminal (CCW)
117
SI
O
SI control output
L: ON, H: OFF
118
USB_PWR_REQ
I
USB power ON/OFF request signal input from
DISC module
H: Power ON, L: Power OFF
119
DISC_LRMUTE
I
Mute request input from Disc mechanism
H: MUTE requested, L: MUTE not requested
120
NC
O
Not used
Output L
fi
xed
121
P5V_DET
I
Input for USB_5V power supply abnormality detec-
tion
Pin80: Start monitoring 1 second after USBPWR ON.
Carry out the operation listed below if abnormal for
300ms (20ms x 15 times)
000H~153H: Abnormal (1)
154H~2A6H: Normal
2A7H~3FFH: Abnormal (2)
(1) When abnormality con
fi
rmed:
• Turn off USB_PWR
• Display message on GUI
(2) When abnormality cleared:
• Turn the set’s power OFF
122
NC
I
Not used
Output L
fi
xed
123~125 NC
O
Not used
126
NC
Not used
127
AVSS
-
128
NC
Not used
MICROCOMPUTER’S TERMINAL DESCRIPTION
TEST MODE
List of special modes
Mode name
Description
Key used
Service mode
Mode used for service.
TEL/AUD + Upper left
→
Upper right
Production mode
Special operation mode for production line. Not used for service.
FNC + RST
SS mode
Special service mode entered from the production mode.
Not used for service.
TEL/AUD + Upper right
OPENING
CUSTOMIZE MODE
Mode used by sales and retail.
Overwrites the start-up screen with DISC/USB.
AV + FNC + RST
Press and hold [FNC] + [RST]
