Service Precautions; Notes On Soldering; Voltage Monitoring; Confirmation Of User-Setting Data - Pioneer DJM-2000 Service Manual

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1. SERVICE PRECAUTIONS

1.1 NOTES ON SOLDERING

• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
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Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
• Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 ºC.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 ºC in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.
Do NOT use a soldering iron whose tip temperature cannot be controlled.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
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The following lead-free solders are available as service parts:
• Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.

1.2 VOLTAGE MONITORING

This unit always monitors for power failure and will shut itself off immediately after an error is detected.
A power failure is indicated with flashing of the UTILITY LED (Intervals: 250 ms [Lit 125 ms/Unlit 125 ms]).
C
All the LEDs other than UTILITY will be unlit and all the switches and variable registers will be disabled.
Repair the unit according to the diagnostic procedures described in "5.3 VOLTAGE MONITORING CIRCUIT."

1.3 CONFIRMATION OF USER-SETTING DATA

This product has user- and club-setting data. Be sure to confirm those data before starting repair, although changing them may
not have a large effect. Use the Check Sheet in "8.6," to which you can transcribe the settings, as required. The settings are
stored in Flash ROM (IC1703) on the MAIN Assy.
To display the [USER SETUP] screen, hold [LIVE SAMPLER (UTILITY, WAKE UP)] pressed for at least 1 sec.
To display the [CLUB SETUP] screen, press [POWER] while holding [LIVE SAMPLER (UTILITY, WAKE UP)] pressed.
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1.4 ON THE EEPROM ON THE PCIF ASSY

No program has been stored in the EEPROM (IC2003) on the PCIF Assy (empty ROM) when it is supplied as a part for
service. After the Assy is replaced, be sure to update the firmware. When updating, note that the procedures are different from
those for the usual firmware updating. For details, see "8.2."
The program to be stored in this IC is that for USB control. However, depending on the versions of the firmware programs, no
program for USB control may be included. Therefore, first load the first edition of the firmware program then update it to the
latest version.

1.5 NOTES ON REPLACEMENT OF THE TOUCH PANEL

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Perform calibration after the touch panel is replaced. The calibration procedures are described in "Touch Panel Test" in "6.
Service Mode."
Be careful not trap dirt inside or put fingerprints on the display while reassembling, and check that there is no trapped dirt or
fingerprints after reassembling.

1.6 NOTE FOR THE HANDLING OF THE TOUCH PANEL

(1) Transparency is an important factor for the touch panel. So, please wear clean finger sacks, gloves and mask to protect
the touch panel from fingerprint or stain attach, and also hold the portion outside the view area when handling the touch
panel.
(2) Do not handle the touch panel by holding the flexible pattern portion in order to assure the reliability.
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(3) Do not put one touch panel on the other. Otherwise, it may cause the touch panel to be scratched and/or change on
cosmetic occur (e.g. Newton ring).
(4) Do not put a heavy, hard or sharp object on the touch panel.
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