Tuesday, May 24, 2016

Pioneer CDJ-350 - Digital DJ Player - How to enter to service mode – How to update the firmware – Error E-7024 - Player command mode – Audio system repair and service

Category: Audio System Repair and Service 

Contents of this article 

  • How to update the firmware 
  • How to access service mode 
  • Command mode operations 

Pioneer CDJ-350

SERVICE MODE
TEST 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, and a encoder.
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. Confirmation of movement of the drive unit
It is the mode which checks operation of a mechanism and servo of drive unit.
6. Updating firmware
Mode for firmware updating. Two modes (one for updating using a USB memory device and one for updating using a CD-ROM) are provided.
Display of various information
How to Enter Service Modes
1) Version/error history
The Version Display mode is entered after the RELOOP key is held pressed for at least 10 sec.
(This does not apply when the TEMPO slider is set to the end "–" (uppermost) position or "+" (lowermost) position.
Each time the BPM LOCK key is pressed in Version Display mode, the versions for the MAIN, DISPLAY, and DSP programs are displayed, in that order.
To change screens between Version Display and Error History, press the VINYL MODE key while the Version Display screen is displayed.
The error log screens will be changed if you press the DIVIDE (LEFT) or DIVIDE (RIGHT) key while the error history is displayed.
2) Service mode (Panel diagnosis/JOG load measurement)
To enter Service mode, set the POWER switch to ON while holding the BACK and TEMPO RANGE keys pressed.
To enter JOG Load Measurement mode, set the TEMPO slider to the + (MAX) position during Service mode.
For details on how to operate, see “[2] Confirmation of the button input and an indication function.” Set the POWER switch to OFF to quit this mode.
3) CD drive diagnosis mode
To enter CD Drive Diagnosis mode, set the POWER switch to ON while pressing the TIME and CD SELECT keys pressed.
Set the POWER switch to OFF to quit this mode.
4) Firmware Updating (USB media)
To enter this mode, set the POWER switch to ON while pressing the SOURCE SELECT USB and RELOOP keys pressed.
After updating is completed, set the POWER switch to OFF to quit this mode.
5) Firmware Updating (CDROM media)
To enter this mode, set the POWER switch to ON while pressing the SOURCE SELECT DISC and RELOOP keys pressed.
After updating is completed, set the POWER switch to OFF to quit this mode.
6) Factory reset
To enter this mode, set the POWER switch to ON while holding the SOURCE SELECT USB and BACK keys pressed.
For details on items to be factory-reset, see “8.3 USER SETTABLE ITEMS.
Diagnostic procedure
1. Unplug the AC power cord.
2. Replace R599 on the PNLB Assy with R569.
3. Plug the AC power cord.
4. Turn the unit ON and check each voltage.
Unplug the AC power cord after several seconds, because power will be forcibly supplied even if any voltage is abnormal.
(If abnormal voltage continues, the defective point may produce heat, which may be dangerous.)
5. If the voltage at any power IC is abnormal, the circuit that is connected to the power IC or the power IC itself may be defective.
6. Repair the detective part.
7. Replace R569 on the PNLB Assy with R599 (return R599 to its original position).
Player operation mode command
Play(Trace) / Pause
If it is in a stop state, it will set up and play. Moreover, if it is in a play state, whenever it will push a button, a pause and a play are carried out by turns.
Display a playing address in FL at present.
Note: In this mode, even if it inserts a disc, an automatic setup is not carried out.
Moreover, a play is not carrying out audio reproduction, but is tracing the signal side of a disc.
Trace a disc by a turn of four times speed in the play. The sound is not output.
Track Search F/R
Search a track displayed by a FWD / REV direction and do pause.
Error Rate Count
I measure an error rate from a present position doing a play/pause for about 10 seconds and display a measurement result in FL. Usually, a track to measure is made to search and this button is inputted from a pause state.
For example, it is displayed as "3.56E-4 O.K." etc.
If an error rate is less than 3.00E-3, it will be displayed as OK. If an error rate is larger than 3.00E-3, it will be displayed as NG.
Measurement with the managed disc at the time of factory shipments is a premise.
The product does not judge whether they are inferior goods at the time of service.
Eject
A disc is ejected.
Mode Change
If the MASTER TEMPO button is pushed into player operation mode, MASTER TEMPO LED will light up, and it will shift to
the below-mentioned "test operation mode."
Test operation mode command
 Servo operation is finely controllable gradually.
Keep in mind a test operation mode command that it may give a damage to a player as mistaking the usage.
Servo All Off
When servo is ON, all servo will be turned off if the TIME button is pushed.
“ALL OFF” will be displayed.
LD On/Off
The LD can be turned on or off by pressing the TEMPO key. “LD ON” or “LD OFF” will be displayed.
Focus On
If the RELOOP key is pressed in Stop mode, the LD is turned ON and auto focusing will be performed.
“FCS ON” will be displayed.
Spindle Kick, Tracking On/Off
If the IN/REALTIME CUE (LOOP IN) key is pressed while the tracking servo is OFF, spindle kick then automatic
adjustment will be performed, after which the tracking servo will be turned ON.
If the key is pressed while the tracking servo is ON, it will be turned OFF. “TRK ON” or “TRK OFF” will be displayed.
Tracking Off
If the OUT (LOOP OUT) key is pressed while the tracking servo is ON, it will be turned OFF.
“TRK ON” will be displayed.
Slide FWD
If the SEARCH n (FWD) key is pressed while the tracking servo is ON, it will be turned OFF and the slider will be
shifted by about 2 mm in the FWD direction. “SLD FWD” will be displayed.
Slide REV
If the SEARCH m (REV) key is pressed while the tracking servo is ON, it will be turned OFF and the slider will be
shifted by about 2 mm in the REV direction. “SLD REV” will be displayed.
Pickup Up/Down
f the DISPLAY/UTILITY key is pressed during Stop mode, the LD will be turned ON then the pickup will be moved
up and down. Focusing will not be closed. “PU UP/DN” will be displayed.
Mode Change
If the MASTER TEMPO key is pressed in Test Operation mode, the MASTER TEMPO LED will go dark then above mentioned Player Operation mode will be entered.
To start up the unit in Test mode in steps, input the commands in the following order: "Servo All Off," "Focus On," then “Spindle Kick, Tracking On."
UPDATING OF THE FIRMWARE
When USB memory is used
Please use USB memory formatted by FAT32. It does not correspond to HFS+.
1. A file to update is copied to USB memory.
2. Please turn on a power supply, pushing both the buttons of SOURCE SELECT/USB and RELOOP. (Please continue pushing until "DOWNLOAD" screen appears.)
3. The FL is displayed the following screen during update.
In the display example, show it is updating to 1.01 from Ver. 1.00.
4 Since the message of "COMPLETE" will be displayed if update is completed, please return on a power supply.
When CD-R/RW is used
1. A file to update is copied to CD-R/RW.
2. Please turn on a power supply, pushing both the buttons of SOURCE SELECT/DISC and RELOOP.
(Please continue pushing until "DOWNLOAD" screen appears.)
3. The rest is the same as that of the case where USB memory is used.
Recovery when failing
When the power supply has been turned off on the way, subsequent normal operation becomes impossible.
When the error code of "E-7024" is displayed, the recovery mode operates when performing the update procedure mentioned above again, and update is performed.
In this case, please carry out by USB memory in recovery. CD-ROM cannot be used.