Service mode
The following service modes are prepared for this unit.
1. Confirmation of the button input and an indication function.
It is the mode which checks each input and display function of a button, a JOG dial, the slider volume, a encoder and a needle pad.
2. Check mode of the load of JOG dial.
It is the mode which measures the load when rotating JOG dial.
3. Indication of various information
It is a mode displaying information such as a version and an error history, a device normal / abnormality judgment.
4. Error display list
An error code and the contents are shown.
5. Drive Self-Diagnosis
It is the mode which performs self-diagnosis of a drive unit.
6. Contents of drive self-diagnosis
It is explanation of the contents of self-diagnosis of a drive unit.
7. Confirmation of movement of the drive unit
It is the mode which checks operation of a mechanism and servo of drive unit.
8. Output of the alarm port
Explanation of the meaning of output of status terminal on a PC Board.
9. Firmware update.
Method of firmware update.
The following service modes are prepared for this unit.
1. Confirmation of the button input and an indication function.
It is the mode which checks each input and display function of a button, a JOG dial, the slider volume, a encoder and a needle pad.
2. Check mode of the load of JOG dial.
It is the mode which measures the load when rotating JOG dial.
3. Indication of various information
It is a mode displaying information such as a version and an error history, a device normal / abnormality judgment.
4. Error display list
An error code and the contents are shown.
5. Drive Self-Diagnosis
It is the mode which performs self-diagnosis of a drive unit.
6. Contents of drive self-diagnosis
It is explanation of the contents of self-diagnosis of a drive unit.
7. Confirmation of movement of the drive unit
It is the mode which checks operation of a mechanism and servo of drive unit.
8. Output of the alarm port
Explanation of the meaning of output of status terminal on a PC Board.
9. Firmware update.
Method of firmware update.
How to enter to service mode
When it spends a power supply while pushing a TEMPO button and a MEMORY button simultaneously, It is displayed in the LCD display part, "CDJ-2000NXS SERVICE MODE", and enters into this mode.
When it enters this mode, the TAG-TRACK button is pushed, and the screen will show on the display.
In this mode, the input of each button, JOG, volume, etc. is normal, and it can check that a display can also be performed normally.
In addition, indication turns on while you push a button.
Drive
Self-Diagnosis
Self-diagnosis
of a drive is performed through three steps.
It waits to push a button, after are displayed as [Push PLAY Button] at the beginning of each step and inserting a predetermined disc.
If a disk is inserted and PLAY button is pushed, a display of [Executing--] will blink and diagnosis will be started.
After diagnosis is completed successfully, it is displayed as [Complete] and a disk is ejected automatically.
It waits to push a button, after are displayed as [Push PLAY Button] at the beginning of each step and inserting a predetermined disc.
If a disk is inserted and PLAY button is pushed, a display of [Executing--] will blink and diagnosis will be started.
After diagnosis is completed successfully, it is displayed as [Complete] and a disk is ejected automatically.
Contents
of drive self-diagnosis
(1) CD-LD life check
The addition time which LD had turned on is checked and degradation condition is judged.
If addition time is over 7000 H, display it with NG. NG judgment reason: Because the Laser Diode becomes 1% of the rate of failure in 7000 H or more. Over 7000 H in the case of "NG", you measure LD current, and perform failure judgment of the Pickup.
(2) DVD-LD life check
Same as the above.
(3) Focus actuator check
To detect the disconnection of the actuator. Current is passed to an actuator using an external circuit, and a disconnection part is detected by reading the voltage value divided by resistance by A/D. State of FFC connector mounting, state of FFC insertion, and disconnection of the actuator are detected synthetically. Since the probability which Focus and Tracking both disconnect is low, as for the case of both NG, suspect FFC insertion.
(4) Tracking actuator check
Same as the above.
(5) Stepper check
To detect "A stop of the Stepper by foreign substance mixing, the stack, etc", "the defect of an inside switch", and "the step-out of the Stepper by the shortage of lateral-pressure with faulty mechanism parts". It checks that the Stepper can perform predetermined operation certainly using an inside switch.
(6) Oleic check
To detect omission of OEIC.
It detects by checking disk existence using CD.
(7) Disc motor check
To detect the defect of a spindle motor.
A motor is started and the attainment time to 2000 rpm is checked.
(8) CD/LD power & lens dirt check
It checks whether CD-LD power adjustment is appropriate and whether the object lens is dirty.
The peak value and bottom value of the main beams A, B, C, and D are measured by A/D, and it judges whether it is the level which can continue a playback.
(9) Optical system dirt check
Same as the above.
(10) CD error rate check
An error rate is measured and the last check is performed.
The addition time which LD had turned on is checked and degradation condition is judged.
If addition time is over 7000 H, display it with NG. NG judgment reason: Because the Laser Diode becomes 1% of the rate of failure in 7000 H or more. Over 7000 H in the case of "NG", you measure LD current, and perform failure judgment of the Pickup.
(2) DVD-LD life check
Same as the above.
(3) Focus actuator check
To detect the disconnection of the actuator. Current is passed to an actuator using an external circuit, and a disconnection part is detected by reading the voltage value divided by resistance by A/D. State of FFC connector mounting, state of FFC insertion, and disconnection of the actuator are detected synthetically. Since the probability which Focus and Tracking both disconnect is low, as for the case of both NG, suspect FFC insertion.
(4) Tracking actuator check
Same as the above.
(5) Stepper check
To detect "A stop of the Stepper by foreign substance mixing, the stack, etc", "the defect of an inside switch", and "the step-out of the Stepper by the shortage of lateral-pressure with faulty mechanism parts". It checks that the Stepper can perform predetermined operation certainly using an inside switch.
(6) Oleic check
To detect omission of OEIC.
It detects by checking disk existence using CD.
(7) Disc motor check
To detect the defect of a spindle motor.
A motor is started and the attainment time to 2000 rpm is checked.
(8) CD/LD power & lens dirt check
It checks whether CD-LD power adjustment is appropriate and whether the object lens is dirty.
The peak value and bottom value of the main beams A, B, C, and D are measured by A/D, and it judges whether it is the level which can continue a playback.
(9) Optical system dirt check
Same as the above.
(10) CD error rate check
An error rate is measured and the last check is performed.
(11)
DVD-LD power check
It checks whether DVD-LD power adjustment is appropriate and whether the object lens is dirty.
The peak value and bottom value of the main beams A, B, C, and D are measured by A/D, and it judges whether it is the level which can continue a playback.
(12) DVD error rate check
An error rate is measured and the last check is performed.
(13) User CD physical check
When there is offer of a disc from a user, it distinguishes whether it is that a disc is the cause.
The characteristic of a user disk is checked from automatic adjustment value.
A disk uses only CD (from a past actual result).
(14) User CD scratch check
The error rate of the whole disk is measured per 1 minute, and best value and worst value are calculated.
The state of a disc is checked from those relations.
(15) User CD quality check
Same as the above.
(16) User CD dirt check
Same as the above.
It checks whether DVD-LD power adjustment is appropriate and whether the object lens is dirty.
The peak value and bottom value of the main beams A, B, C, and D are measured by A/D, and it judges whether it is the level which can continue a playback.
(12) DVD error rate check
An error rate is measured and the last check is performed.
(13) User CD physical check
When there is offer of a disc from a user, it distinguishes whether it is that a disc is the cause.
The characteristic of a user disk is checked from automatic adjustment value.
A disk uses only CD (from a past actual result).
(14) User CD scratch check
The error rate of the whole disk is measured per 1 minute, and best value and worst value are calculated.
The state of a disc is checked from those relations.
(15) User CD quality check
Same as the above.
(16) User CD dirt check
Same as the above.
