Test Mode - Kenwood DDX3028 Service Manual

DDX3028/3048/3058/318/4038/4038M
DDX4028BT/4038BT/4038BTM/4048BT/4058BT/418
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
108 PWIC_DC_DET
109 AN_TEMPCPU
110~112 NC
113,114 NC
115 R_ENC1
116 R_ENC2
117 SI
118 USB_PWR_REQ
119 DISC_LRMUTE
120 NC
121 P5V_DET
122 NC
123~125 NC
126 NC
127 AVSS
128 NC
List of special modes
Mode name
Service mode
Production mode
SS mode
OPENING
CUSTOMIZE MODE
10
I/O Application
I Power IC DC Offset detection input
I Temperature data input for fan control
O Not used
Not used
I Rotary encoder input terminal (CW)
I Rotary encoder input terminal (CCW)
O SI control output
USB power ON/OFF request signal input from
I
DISC module
I Mute request input from Disc mechanism
O Not used
Input for USB_5V power supply abnormality detec-
I
tion
I Not used
O Not used
Not used
-
Not used

TEST MODE

Description
Mode used for service.
Special operation mode for production line. Not used for service.
Special service mode entered from the production mode.
Not used for service.
Mode used by sales and retail.
Overwrites the start-up screen with DISC/USB.
Processing / Operation / Description
Below threshold: Abnormal DC value
Threshold value not determined, Switch FAN ON/
OFF depending on the AD conversion value.
L: ON, H: OFF
H: Power ON, L: Power OFF
H: MUTE requested, L: MUTE not requested
Output L fi xed
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 confi rmed:
• Turn off USB_PWR
• Display message on GUI
(2) When abnormality cleared:
• Turn the set's power OFF
Output L fi xed
Key used
TEL/AUD + Upper left → Upper right
FNC + RST
Press and hold [FNC] + [RST]
TEL/AUD + Upper right
AV + FNC + RST