Denon DVM-4800, Service Manual

Page: 7 / 106

7
DVM-4800
3. SELF-DIAGNOSIS FUNCTION AND SERVICE MODES
3.1 Self-diagnosis Function and Service Modes
Improving the self-diagnosis function
The self-diagnosis function in our DVD player currently in use is improved as follows:
The storage capacity is increased.
UHF error display
The latest error storage
function
n=1
Jitter/read error display
Laser drive current display
For DVD
UHF error display
The latest error storage
n=20
Jitter/read error display
Focus drive value display
laser drive current display
For DVD/CD
ADSC internal RAM data
display
Servo process display
Total operation time
display SP motor
Laser (DVD/CD)
The focus drive current value can be displayed.
The servo learning value stored in the RAM data
inside the ADSC (servo controller) IC is displayed.
Mainly in the initial starting operation period of the
player, a number is allotted to the servo process
of each step, and the process of the starting
operation can be displayed.
The operation times of SP motor and the laser
(both for the DVD and CD) can be displayed.
Our DVD player currently
in use Our new DVD