Denon DVM-4800 Service Manual page 11

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3 7 63 1515 0
3.4 Servo Process Display Mode
In starting operation of the player, a number is allotted to each servo process so that the operation of each step can be seen.
The relation between the process and the displayed number are as follows:
Process classification
Initial start process
Restart process
Seek process
Repair process
Stop process
3.5 ADSC Internal Ram Data Display
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L 13942296513
The servo learning value in the RAM data inside the servo processor ADSC is displayed.
The value is useful for the servo operation/disc quality judge including the OPU.
The concrete contents are shown below:
Address
4B4
4BC
4B6
4BE
4B5
4BD
TB0
TB1
DBD
DBC
FC0
BT0
FC1
BT1
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Number allotment to the servo process
Each processing item
Initial start
Secondary learning
Restart
Seek
Recover
(Error check)
(Attention)
(Q code read)
Stop
Contents of display
Focus gain learning value for DVD-S, DVD-D(L0), CD, and VCD
Focus gain learning value for DVD-D(L1)
Focus balance learning value for DVD-S, DVD-D(L0), CD, and VCD
Focus balance learning value for DVD-D(L1)
Tracking gain value for DVD-S, DVD-D(L0), CD, and VCD
Tracking gain value for DVD-D(L1)
Tracking balance value for DVD-S, DVD-D(L0), CD, and VCD
Tracking balance value for DVD-D(L1)
DSL offset learning value for DVD-S and DVD-D
DSL offset learning value for CD and VCD
Equalizer FC value for DVD-S, DVD-D(L0), CD, and VCD
Equalizer BOOST value for DVD-S, DVD-D(L0), CD, and VCD
Equalizer FC value for DVD-D(L1)
Equalizer BOOST value for DVD-D(L1)
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Description
The process starts after the tray is loaded. (The state
is changed to "READY" or "PREPARE".)
Servos for the DVD-DL 1st layer and the CD-DA double
speed are learned in this step.
When a user operates in the "READY" state, each servo
is turned on.
The optical pickup is moved to the disc destination in
this process.
An error is searched in the PLAY/SEEK state.
An error is recovered following the attention error
interrupt from the S-ODC.
If any Q code is improperly read, reset and retry.
A servo is controlled in response to the user's operation
to stop the disc completely.
Q Q
3 6 7 1 3
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2 9 9 4 2 8
Process number
1 5 0 5 8 2 9 9 4
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DVM-4800
9 9
0~40
50~7F
80~9F
A0~BF
C1~C3
C4~C6
C7~C9
F0~FF
2 8 9 9
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