list are essential for safety. When replacing these parts, be sure to use onlythe specified parts. 3. Use the specified types for internal wiring (double-insulated wiring, etc.). 4. When replacing parts on the AC primary side (power transformer, electric switch, electrical cord, noise-prevention condenser, etc.), wind the lead wire and secure it by soldering.
Page 6
to make the following insulation resistance test to prevent the customer from being exposed to a shock hazard. 2.2. Insulation Resistance Test 1. Unplug the power cord and short the prongs of the plug with a jumper wire. 2. Turn on the power switch. 3.
6. Parts Location 7. Disassembly Instructions 7.1. Opening the cabinet 1. Turn the keyboard cabinet upside down, and remove the bottom screws ( 24 pcs.) as shown in Fig.2 2. Place the keyboard bottomside down, and open the cabinet . Fig.2...
Page 8
7.2. Removing the MAIN and FAJ P.C.B.s - Open the cabinet (see step “ Opening the cabinet ”). MAIN P.C.B. 1. Remove the MAIN P.C.B. mounting screws ( 10pcs.) as shown in Fig.3 FAJ P.C.B. 1. Remove the FAJ P.C.B. mounting screws ( 10pcs.and 2 pcs.) as shown in Fig.3.
Page 9
6.5cm speaker 1. Remove the 6.5cm speaker mounting screws ( 10pcs.) as shown in Fig.4. Fig.4 7.4. Removing the CPC, CPL and CPR P.C.B.s and LCD - Remove the MAIN and FAJ P.C.B.S (see step “ Removing the MAIN and FAJ P.C.B.s ”).
Page 10
1. Remove the CPC P.C.B. . 2. Remove the LCD mounting screws ( 4pcs.) as shown in Fig.5 Fig.5 7.5. Removing the MKB1, MKB2 and MKB3 P.C.B.s - Open the cabinet (see step “ Opening the cabinet ”). MKB1 P.C.B. - Remove the MKB1 P.C.B.
Page 11
7.6. Removing the Keybord Unit 1. Open the cabinet (see step “ Opening the cabinet ”). 2. The keyboard consists of 5 units. These units can be removed indeoendently by removing the mounting screws ( 3 or 4 pcs. for each unit) as shown in Fig.7 Fig.7 7.7.
Page 12
12 cm SP - Remove the 12 cm SP holding screws ( 4pcs.) as shown in Fig.8 Fig.8 8. Service Diagnostic Function The service diagnostic function makes it possible to determine whether the various test modes pass or fail. The test modes are completely independent of one another. Select a test mode as necessary, and run the test.
Page 13
3. Use the page buttons to select the respective test. Fig.10 8.1. ROM device test Fig.11 - Press the EXECUTE button to begin the test. - The test result (OK or NG) is displayed within twenty seconds. If the test result is NG, not only the respective IC, but also a break or short circuit in the ADDRESS/DATA BUS as well as in any of the strobe signal lines may be the causeof thefailure.(refer to Fig.11...
Page 14
- Press the EXECUTE button to begin the test. - The test result (OK or NG) is displayed within a few seconds. If the test result is NG, not only the respective IC, but a break or short circuit in the ADDRESS/DATA BUS as well as in any of the strobe signal lines may be the causeofthefailure.
Page 15
Load/save test - Insert the SD card. Press the START button to begin the test. - The test is carried out repeatedly. Data is saved and loaded, and then the two data sets are compared. The number of times that the test results in OK or NG are counted and displayed on the LCD.
Page 16
- To light all the LEDs, press and hold the DEMO button. If an LED fails to light, the LED may be defective or there may be a break in the surrounding circuit. 8.6. LCD module test (LCD adjustment and confirmation) Fig.16 - Press the WHITE/BLACK, CROSSTALK, SAMPLE or CONTRAST button to begin the respective test.
Page 17
- The operation status of each input action part can be confirmed. If the part is operating properly, “OK” is shown, excluding the Expression Pedal. (refer to Fig.17 - When a keyboard key is pressed, the corresponding pitch and velocity aftertouch is displayed (only as long as the key is depressed).
Page 18
circuit. 8.9. WAVE ROM test Fig.19 - Press the EXECUTE button to start the test. - The test result (OK or NG) is displayed within thirty seconds. If the test result is NG, not only the respective IC, but also a break or short circuit in the ADDRESS/DATA BUS as well as in any of the strobe signal lines may be the causeofthefailure.
1. Generate a full amplitude sine wave in the pitch of each key. (No touch, fixed stereo center). If no sound is generated or if the sound is distorted, the sound generator ROM corresponding to the key position is defective. 2.
Page 20
Oscilloscope VP-5730A”. Therefore the waveforms of musical tone signals shown may differ somewhat due to the difference in the timing of triggering. 2. Since the 1/10 test probe is used, the indicated voltage value on the bottom part of each waveform illustration is 1/10 of the actual value (e.g.
SPECIFICATION SYMBOL Fixed Carbon Film Resistors “FLAME-PROOF” (ERD—F—type) Fixed Wire Wound Resistors “FLAME-PROOF” (ERF—type) Fixed Metal Oxide Film Resistors “FLAME-PROOF” (ERG—type) Fixed Metal Film Resistors “FLAME-PROOF” (ERX—type) Fixed Metal Film Resistors (Precision and High Stability) (ERO—type) Fuse Type Fixed Metal Oxide Film Resistors “FLAME-PROOF”...
11. SCHEMATIC DIAGRAM 12. Printed Circuit Board 13. Block Diagram 14. Wiring Connection Diagram 15. Replacement Parts List Notes: *Important safety notice: / Components identified by mark have special characteristics important for safety. / Funrthermore, special parts which have purposes of fire-retardant...
Page 24
(resistors), high-quality sound (capacitors),low-noise(resistors),etc. are used. / When replacing any of components, be sure to use only manufacture’s specified parts shown in the parts list. / * Warning: This product uses a laser diode. Refer to caution statements. *ACHTUNG:Die lasereinheit nicht zerlegen.Die lasereinheit darf nur gegen einc vom hersteller spezifizierte einheit ausgetauscht werden.
Page 25
Ref. No. Part No. Part Name & Description Remarks K2AA2G000003 AC IN CASE EXCEPT P,PC QMRG2133BA ACP COVER QGNGKN2600MB NAME PLATE QGNGKN2600CB NAME PLATE QGNGKN2600EB NAME PLATE EX,EQ,EB,EG,EH,GH QGNGKN2600AB NAME PLATE QGNGKN2600SB NAME PLATE GU,GT,GM QQLG259AA FCC LABEL P ONLY XTW3+20Q SCREW XTW3+10QFZ...
Page 26
Ref. No. Part No. Part Name & Description Remarks QGPG0132CAK LCD PANEL QGUG1438ADK BUTTON C QGUG1436ADK BUTTON B QGUG1442ACK BUTTON G QGUG1453AB1K BUTTON H QGUG1454ABK BUTTON J QGUG1455ABK BUTTON K QGUG1457ACK BUTTON M-1 QGUG1420ABK BUTTON N QGUG1469ABK BUTTON P QMFG4216ACK BUTTON CUSHION A QMFG4216ABK BUTTON CUSHION A...
Page 28
Ref. No. Part No. Part Name & Description Remarks QJAG028AB AC CORD EB,GH RJA0035-2X AC CORD K2DA42E00001 ATTACHMENT GU,GT ONLY QPGG0532AB CARTON BOX QPFG088AA POLYBAG SPHG810B AC CORD BAG QPFG103AA POLYBAG CD-ROM QSPG1010AA POWER SW L0AA12A00010 12CM SP L0AA06A00012 6.5CM SP QTPG1M056A POWER TRANSFORMER G4C6AEH00003...
Page 65
SD I/F P.C.B. POWER TRANSFORMER SP1 12cm SP1 12cm AC IN POWER SWITCH ACP P.C.B. CN604 CN603 SP2 6.5cm SP2 6.5cm W4 QEXGVH03075B W2 QEXGVH06120A W3 QEUGMFW15CCZ W1 QEXGZA14045A CN203 CN601 CN607 CPL P.C.B. CPR P.C.B. CN401 CN104 CN612 QEUGMLW06C CN301 CN610 MAIN P.C.B.
Page 66
Keyboard [ SX-KN2600 ] Function Transmitted Recognized Remarks Default 1 - 1 6 1 - 1 6 Assigned to the part. Basic Channel Changed 1 - 1 6 1 - 1 6 Default OMNI OFF , POLY MODE M o d e 3 Messages M=1 only Mode...
Page 85
SCHEMATIC DIAGRAM- 10 ACP CIRCUIT POWER VOLTAGE POWER TRANSFORMER PRODUCTS FOR GU GT SELECTOR BLUE 4700P BLACK AC IN 10UHX2 100V0.1 BLUE AC POWER CORD POWER TRANSFORMER PRODUCTS FOR P PC BLUE 4700P BLACK AC IN 10UHX2 100V0.1 BLUE POWER TRANSFORMER PRODUCTS FOR OTHERS BLUE 4700P...
Controls and functions (KN26 00) AUTO PLAY CHORD Add an automatic accompaniment RHYTHM GROUP to your selected rhythm. Various rhythm patterns are available for each rhythm group. MUSIC STYLIST You can choose to have all the settings of this instrument automatically set.
Page 105
DISPLAY EFFECT Displays performance information, function Add various effects to the settings and other messages. sounds. Use the CONTRAST buttons to adjust the display so that it is easy to read. SOUND GROUP TRANSPOSE Various sounds are available for Raise or lower the key each sound group.
This Keyboard has many settable functions and storable memories. However, you can return the settings and memory to the factory-preset status. Press the PROGRAM MENUS button to turn it Press the OK button. The display changes to the confirmation dis- play.
Page 107
CURRENT PANEL settings PANEL MEMORY SEQUENCER PERFOR- COMPOSER (MEMORY contents) MANCE PERFORMANCE PADS (USER memories) SOUND MEMORY EFFECT MEMORY BACKUP MIDI (USER for the MIDI PRESETS) & FAVORITES The BACK UP data will not be erased even with the passage of time. The backup memory does not function for the stored contents until the power has been on for about 10 minutes.
/MONO EXP PEDAL FOOT SW LINE OUT PHONES VOLUME MIDI EXP PEDAL This terminal allows connection to a personal The optional SZ-E2 Expression Pedal (sold sep- computer with a USB cable (commercially avail- arately) can be connected to this terminal to con- able type AB cable).
Page 109
The following changes in performance may occur in the Technics Keyboard but do not indicate trouble. Phenomenon Remedy The buttons, keys, etc. malfunction. Turn off the POWER button once, then turn it on again. If this procedure is not successful, turn off the POWER button once.
Page 110
Phenomenon Remedy Storage is not possible. The remaining memory capacity of the COMPOSER is Setting the time signature is not possible. The time signature cannot be changed for a pattern which is currently recorded in the COMPOSER. If you wish to change the time signature, first follow the pro- cedure to clear the memory.
Page 111
Contents Contents The data on the disk that you are It is only possible to copy melody using is for a different product. tracks. Tracks such as rhythm, chord and An error has occurred while the disk control cannot be copied. was loading.
Page 112
Contents AUTO PUNCH recording has been unsuccessful because SEQUENCER operation was interrupted before the PUNCH OUT measure was reached. The song that you have tried to load exceeds this instrument’s available memory and cannot be loaded. The selected song memory has been cleared.