Denon DN-S3700 Service Manual page 26

7. Platter check mode (PLATTER CHK)
• Displays the platter jog disc and turntable rotation pulse input number.
(1) Turn the PARAMETERS knob to select "PLATTER CHK" from the service mode's top menu, then press the PARAME-
TERS knob to set the "PLATTER CHK" mode.The following appears on the VFD dot display section:
3 3 . 3 r p m T r q : h
3 3 3 6 ( 3 3 2 8 , 3 3 4 4 )
- 0 . 0 8 % ( 0 . 4 8 % )
(***** : Count value)
The first row of the VFD dot display section:
"33.33rpm" : Target rotation speed ← The TAP button and the rotation of the EFFECTS knob can be used to
change for target rotation speed (design verification.)
"Trq:H" : Torque ← 1, 2 and 3 buttons can be used to switch to H, M and L for torque (design verification.)
The second row of the VFD dot display section:
"3336" : Displays the current rotation speed. (4 digits with decimal point omitted)
"(3328,3344)" : Displays (minimum rotation speed, maximum rotation speed). Displays "mask time" for the several
seconds during which rotation is stabilizing.
The third row of the VFD dot display section:
"- 0.08%" : Displays the error with respect to the target rotation speed. ( ± with 2-digit value and 2-digit decimal)
"( 0.48%)" : Displays the range of fluctuation with respect to the target rotation speed. (2-digit value and 2-digit
decimal)
(2) Press the button to return to the top level of the CD drive check mode.
8. Version upgrade procedure of firmware
Use the procedure described below to update the firmware to a newer version.
• Store the file for updating the firmware in the root directory of USB device.
• If the file for updating the firmware is stored on a USB device, connect the USB device to the USB A terminal.
Note : Do not turn off the power or disconnect the USB cable or the USB device while the firmware is being updated.
If firmware updating is not completed normally, some operations may no longer be guaranteed to work and it may
not be possible to update the firmware again.
(1) Turn on the power while pressing the
The following appears on the VFD dot display section:
V e r U P
P u s h
(2) Press the CUE button. The following appears on the VFD dot display section:
0 1 0 0 > > 0 1 1 1
P u s h
(0111 : Old version, 0111 : New version)
(3) Check the version number. If OK, press the
The following appears on the VFD dot display section:
N o w U p d a t i n g
D o n ,t P o w e r O F F
(4) When firmware updating is completed, updating of the sub-microprocessor begins automatically.
The following appears on the VFD dot display section:
S U B U p d a t i n g
X X X X > > * * * *
(XXXX : Old version, **** : New version)
(5) Once firmware updating is fully completed, the following appears on the VFD dot display section:
C o m p l e t e !
P l e a s e P o w O F F
(6) Turn the power off and disconnect the USB device from the USB port.
button, the
M O D E *
C u e
P l a y
13
(PARAMETERS, FADER IN)
(EFFECTS)
(Vinyl playback direction selector)
button and the PARAMETERS knob simultaneously.
button to begin updating.
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DN-S3700