General Music RP100 GEM, RP150 GEM, RP100 BALDWIN, RP150 BALDWIN, RP90 GEM Service Manual

...

Index

Soldering point. Male connector. Female connector.

M/F faston connector.

Test point.

Supply voltage.

Logic supply ground. Analog supply ground. Chassis ground. Earth ground.

Flag joined with one or more flags

GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541/959511 - fax 0541/957404 GENERALMUSIC on the NET: http://www.generalmusic.com

2 3

Opening Instructions & Keyboard disassembling

6 7

RP200 Initial Check, Autotest Procedure, Updating Procedure

RP100-150 Initial Check, Autotest Procedure, Updating Procedure

RP100 - Power Amplifier & Supply, Pedals, Phones, Outputs Boards

RP200 Block Diagram

SERVICE MANUAL

CODE: 270212

Warnings

with the same signal name inscribed.

Address

ATTENTION

Observe precautions when handling electrostatic sensitive devices.

Notice

Service must be carried out by qualified personnel only.Any tampering carried out by unqualified personnel during the guarantee period will forfeit the right to guarantee. For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again. To improve the device's specifications, the schematic diagrams may be subject to change without prior notice. All components marked by this symbol have special safety characteristics, when replacing any of these components use only manufacturer's specified parts. The (µ) micro symbol of capacitance value is substituted by U. The (

Ω

) omega symbol of resistance value is substituted by E. The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified. All resistors are 1/8

Ω

unless otherwise specified.

All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.



 

    



9 10

RP150 - Power Amplifier & Supply, Pedals, Phones, Outputs Boards

12 13

Keyboard Interface & Contacts Boards

RP200 - Power Amplifier & Supply, Pedals, Mixer & Phones Aplifier, Phones, Outputs Boards

RP100-150 Cpu & Sound Generator Board

RP200 Controls Panel & Display Boards

RP100-150 Block Diagram

RP100-150 Controls Panel & Display Boards

Timing Table & 310603 Board Layout

RP200 Cpu & Sound Generator Board Part 1 of 2

RP200 Cpu & Sound Generator Board Part 2 of 2

RP100 and RP150 Spare Part List

RP200 Spare Part List

J J

J 2

1) TO REMOVE THE COVER UNSCREW THE 4 SCREWS ON THE REAR, PULL THE COVER TOWARDS YOU AND LIFT IT UP.

2) TO REMOVE THE CONTROL PANEL UNSCREW THE SCREWS AT EACH END AND THE SCREWS THAT ANCHOR

REMOVE THE KEY RETURN SPRING.

NOTE: TO REMOVE A SHARP KEY BEFORE YOU MUST REMOVE THE NEAR NATURAL KEYS.

UNLOCK THE KEY APPLING NOT MUCH STRENGTH.

4) TO REMOVE A KEY INSERT A SCREWDRIVER OR OTHER SIMILAR OBJECT IN THE SPLIT AT THE KEY BACK, APPLY A LIGHT PRESSURE AND PUSH IN THE DIRECTION SHOWN. NOTE: BEFORE YOU REMOVE A NATURAL KEY YOU MUST REMOVE THE KEYBOARD, IF YOU REMOVE A SHARP KEY THIS OPERATION IS NOT NECESSARY

3) TO REMOVE THE KEYBOARD TP21 UNSCREW THE 11 SCREWS UNDER THE KEYBOARD.

THE CONTROL PANEL SUPPORTS TO THE CHASSIS.

TP21

TP10

DRW

APP.

CKD

WRITTEN CONSENT BY GENERALMUSIC.

OR REPRODUCE THIS DOCUMENT WITHOUT

ALL RIGHTS ARE RESERVED, NO COPIES

GENERALMUSIC S.p.A. ITALY

PART:

DWG# DISK: REV:

PCB#

G. BOCCATO 500870

1/1

26/07/99

RP-100-150-200 Opening Instructions & Keyboard disassembling

RP100 RP100 RP100

RP150 RP200

1) TO REMOVE THE COVER UNSCREW THE 4 SCREWS ON THE REAR, PULL THE COVER TOWARDS YOU AND LIFT IT UP.

Operation Descriptions Display

The procedures that follow must be executed subsequently in the order specified.

Before turn on the instrument check the jumpers setting on CPU & SOUND GENERATOR BOARD corresponds at the model accordingly to the following table:

MODEL J4 J5 J3 J6 J2 RP100 GEM 1-2 1-2 1-2 1-2 1-2 RP100 BALDWIN 1-2 1-2 1-2 1-2 2-3 RP150 GEM 1-2 1-2 1-2 2-3 1-2 RP150 BALDWIN 1-2 1-2 1-2 2-3 2-3 RP90 GEM 1-2 1-2 2-3 1-2 1-2 ** v.2.00 or greater RP90 BALDWIN 1-2 1-2 2-3 1-2 2-3 ** v.2.00 or greater

Remove the secondary fuses F1, F2, F3, located on POWER AMPLIFIER & SUPPLY BOARD; turn on the instrument and verify the supply AC voltages: (CN5) between pin1 and pin3 = 10±0,5Vac (CN9) between pin1 and pin2 = 16±0,8Vac (CN9) between pin1 and pin3 = 16±0,8Vac (CN9) between pin2 and pin3 = 32±1,6Vac Turn off the instrument, and put the fuses back on its holders. Turn on the instrument and the appropriate welcome message appears on the display.

A few seconds later the led GRAND PIANO light. Check the supply DC voltages on CPU & SOUND GENERATOR BOARD: (CN8) between pin9 and pin7 = +5±0,25Vdc (CN8) between pin1 and pin4 = +12±0,6Vdc (CN8) between pin1 and pin5 = -12±0,6Vdc

|INTERNAL PRESET| | GRAND PIANO |

RP100-150 AUTOTEST PROCEDURE

Operation Descriptions Display

The instrument starts in AUTOTEST mode turning on the instrument while pressing down the "GRAND PIANO" button (pressing PRESET instead GRAND PIANO the procedure starts from LCD display test). NOTE: Each time you press the "GRAND PIANO" button the autotest procedure proceeds to the next step.

| RP98 | | AUTOTEST |

Set the default display contrast in the ±6 range by pressing the DATA + or - buttons.

|CONTRAST = # |

The instrument show the date, time and release version of the software loaded in flash memory.

| mmm dd yyyy | |hh:mm:ss V #.##|

The instrument asks if you want to update it, press GRAND PIANO to skip, the appropriate procedure to update the software is explained further.

|EPROM to FLASH | |push REC to prog|

The instrument performs the flash memory data checksum and display it in hexadecimal value. NOTE: the BT (boot) value must be 95C4 for ver.2.00, if it does not correspond you can not update software thru serial port but only with Update Software Board.

|Wait * | |Eprom Checksum |

|cks BT PR ALL|

#### #### ####

The instrument performs the RAM memory test showing the address checked.

|RAM MEMORY CHECK|

addr 23BFFF OK

The LCD display test shows two rows of sixteen dark spaces.

|❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚|

❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚

Check that all leds are lighting.

|--- LED TEST ---|

Are all leds on?

Check the VOLUMES ranges from 0 to 127. Check all buttons (except GRAND PIANO) pressing their one at a time and checking that corresponding led lights, pressing PAGE UP and DOWN buttons the display shows "U" and "D", pressing DATA + and - buttons the display shows "+" and "-", pressing BALANCE < and > buttons the display shows an "X" in 1 and 2 digits, pressing TOUCH, STORE and REC/CONTROL buttons the display shows an "X" in 3, 4 and 5 digits respectively.

| |Button test | | |Vol:0 12345 |

|U|Button test +| |D|Vol:127 XXXXX-|

Check the SOFT and SUSTAIN pedals, pressing each one the value change from 0 (released) to 127 (pressed), for RP100 the DAMPER pedal operation is similar, for RP150 the DAMPER pedal varying its value continuosly from 0 (released) to nearly 127 (pressed).

|Soft Sust Damp| | 0 0 0|

Check the MIDI I/O connecting the MIDI OUT and MIDI IN sockets by a MIDI cable.

|TEST MIDI IN/OUT|

LOOP DETECTED OK

Check COMPUTER I/O shorting pin 3 and pin 5 on the COMPUTER socket, check with the oscilloscope a 4Vpp (1Mhz) signal on pin 1, set volume to half stroke.

|TST COMPUTER I/O| |LOOP DETECTED OK|

The instrument generates a 1KHz sinusoidal signal in both audio channels. VOLUME fader controls the amplitude of signal and TRANSPOSE b and # buttons controls the frequency from 10Hz to 2756Hz.

| SINUS. SWEEP | |Freq. 1000 Hz|

| * REALPIANO * | | RP100 |

| * BALDWIN * | |PIANOVELLE RP100|

| * REALPIANO * | | RP150 |

| * BALDWIN * | |PIANOVELLE RP150|

| * REALPIANO * | | RP90 |

| * BALDWIN * | |PIANOVELLE RP90 |

RP100-150 INITIAL CHECK

Re-set the frequency at 1KHz and check HEADPHONES and AUX outputs with the oscilloscope inserting a stereo jack in the left phones socket (speakers will go be silent) and two mono jack in the AUX OUT sockets and set volume to its maximum.

Now verify the following level of signals: Phones output without load = 17±1.7Vpp AUX output = 1.35±0.14Vpp

Set the VOLUME to minimum. Apply a sinusoidal signal of 0.730Vpp at 1KHz with a generator to the AUX IN left and right sockets and verify the signal output: AUX output = 1.35±0.07Vpp

Autotest is over, turn off the instrument.

|TEST END: SWITCH|

POWER TO RESTART

RP100-150 O.S. UPDATING PROCEDURE up to ver. 2.00 with Updating Software Board (751180)

Operation Descriptions Display

Start with the instrument in AUTOTEST mode as described above and press GRAND PIANO 2 times until the display shows the software version loaded in flash memory.

| mmm dd yyyy | |hh:mm:ss V #.##|

Press GRAND PIANO to skip this procedure.

|EPROM to FLASH |

push REC to prog

The instrument performs the flash memory data checksum and display it in hexadecimal value.

|Wait * | |Eprom Checksum |

|cks BT PR ALL|

#### #### ####

Compare the software version and checksum with the value imprinted onto the EPROM, if one of these does not match, the system must be upgraded, proceed to the next step. Turn off the instrument. Insert the EPROM BOARD (where the operating system is stored) in the CN3 connector located on CPU & SOUND GENERATOR BOARD. Start with the instrument in AUTOTEST mode as described above and press GRAND PIANO 3 times.

When the display shows this message press REC.

|EPROM to FLASH |

ush REC to pro

The instrument erases the previous data in flash memory. After which the instrument displays the amount of memory programming and finally the operation successful. If the programming fails check the EPROM BOARD connection and repeat this procedure from start.

|EPROM to FLASH | |erasing |

|EPROM to FLASH |

|prog

: 1024/1024K

The instrument performs the eprom memory data checksum and displays it in hexadecimal value, compare this value with the value imprinted onto the EPROM: if it matches the EPROM is good.

|Wait * | |Eprom Checksum |

|cks BT PR ALL|

#### #### ####

Turn off the instrument and disconnect the EPROM BOARD. Start with the instrument in AUTOTEST mode as described above and press GRAND PIANO 2 times until the display show the new software version loaded in flash memory.

| mmm dd yyyy | |hh:mm:ss V #.##|

Press GRAND PIANO to skip this procedure.

|EPROM to FLASH |

ush REC to pro

The instrument performs the flash memory data checksum and displays it in hexadecimal value, compare this value with the value imprinted onto the EPROM: if it matches the procedure has been executed succesfully.

|Wait * | |Eprom Checksum |

|cks BT PR ALL|

#### #### ####

The procedure proceed as described in AUTOTEST section, if you do not want to check the rest of the instrument simply turn off it.

RP100-150 O.S. UPDATING PROCEDURE from Serial Port (COMPUTER) ver. 2.xx or greater

Operation Descriptions Display

NOTE: This procedure is valid only if the software version installed on the piano is the

2.00 or greater. Some additional tips and advices are included in the Flashblaster Firmware Update Disk. The disk containing the Fblaster program can also be downloaded by internet at generalmusic web site (www.generalmusic.com) or required at support@generalmusic.com

Connect the serial cable between the COMPUTER of the piano and the RS232 COM port of the computer (PC-Ibm or compatible). Insert the disk in the drive A (or whatever your 3.5" drive is assigned to), open the contents of drive A and double click on the fblaster.exe file. From the OPTIONS/SETTINGS menu, make sure that the TEST AND PROGRAM choice is selected. This is very important.

J J

J 4

Turn on the piano, while holding down the REC button until the display shows:

|READY TO UPDATE | | |

Click with the mouse on the GO! button or, from the ACTION menu, select EXECUTE (ALT+A, E). The piano display appears as follows:

|TESTING... | |n1/n2 PACKETS |

At the end of the test the following display appears:

| TEST OK | | |

After a short time, the following display appears:

|ERASING... |

You are now erasing the old operating system from FLASH memory. When the system is erased, the following display appears as your new operating system is installed into Flash Memor

|UPDATING... | |n1/n2 PACKETS |

When the entire update procedure is completed, the following display appears:

|UPDATE_OK:SWITCH|

POWER TO RESTART

The update has now been successfully completed. Turn off the power switch on the piano, and turn it back on again to use your updated instrument.

RP100-150 Some Repairing Tips

Operation Descriptions Display

This message could be appear if an error occur on the communication channel. Possible solutions:

1) inconsistent data received on MIDI or COMPUTER input socket, check the ratings of the device connected to the piano.

2) if the error persist, try to replace Outputs Board first and CPU board second.

|MIDI SCI error | | |

This message could be appear if an error occur on the communication channel. Possible solutions:

1) verify all the connections between Keyboard Interface Board and the CPU board.

2) if the error persist, try to replace Keyboard Interface Board first and CPU board second.

|VALIS SCI error | | |

This message could be appear if an error occur on the communication between CPU and DISP3 chips. Possible solutions:

1) verify all the tracks, solders and components between CPU and DISP3 chips as shown in schematics.

2) if the error persist, replace the CPU board and send back to generalmusic the failed CPU board.

|Disp Failure | | |

Operation Descriptions Display

The procedures that follow must be executed subsequently in the order specified.

Before turn on the instrument check the jumpers setting on CPU & SOUND GENERATOR BOARD corresponds at the model accordingly to the following table:

MODEL J4 J5 J3 J6 J2 RP200 GEM 1-2 1-2 1-2 1-2 1-2 RP200 BALDWIN 1-2 1-2 1-2 1-2 2-3 GRP300 GEM 1-2 1-2 1-2 2-3 1-2 ** v.2.00 or greater GRP300 BALDWIN 1-2 1-2 1-2 2-3 2-3 ** v.2.00 or greater

Remove the secondary fuses F1, F2, F3, located on POWER AMPLIFIER & SUPPLY BOARD; turn on the instrument and verify the supply AC voltages: (CN6) between pin1 and pin2 = 27,5±1,5Vac (CN6) between pin1 and pin3 = 27,5±1,5Vac (CN6) between pin2 and pin3 = 55±3Vac (CN12) between pin1 and pin2 = 16±0,8Vac (CN12) between pin1 and pin3 = 16±0,8Vac (CN12) between pin2 and pin3 = 32±1,6Vac

Turn off the instrument, and put the fuses back on its holders. Turn on the instrument and the appropriate welcome message appears on the display. A few seconds later the led GRAND PIANO light. Check the supply DC voltages on CPU & SOUND GENERATOR BOARD: (CN8) between pin9 and pin7 = +5±0,25Vdc (CN8) between pin1 and pin4 = +12±0,6Vdc (CN8) between pin1 and pin5 = -12±0,6Vdc

RP200 AUTOTEST PROCEDURE

Operation Descriptions Display

| RP98 | | AUTOTEST | | |

Set the default display contrast in the ±6 range by pressing the DATA + or - buttons.

|CONTRAST = # | | |

The instrument shows the date, time and release version of the software loaded in flash memory.

| mmm dd yyyy | |hh:mm:ss V #.##|

The instrument asks if you want to update it, press GRAND PIANO to skip, the appropriate procedure to update the software is explained further.

|EPROM to FLASH | |push REC to prog|

The instrument performs the flash memory data checksum and display it in hexadecimal value. NOTE: the BT (boot) value must be EAAB for ver.2.00, if it does not correspond you can not update software thru serial port but only with Update Software Board see more further.

|cks BT PR ALL| | #### #### ####|

The instrument performs the "LIBRARY" Rom memory data checksum and display it in hexadecimal value.

|Wait ok! | |Checksum: A021|

The instrument performs the RAM memory test showing the address checked.

|RAM MEMORY CHECK| |addr 23BFFF OK|

The LCD display test fades from light to dark and viceversa.

|❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚| |❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚|

❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚

Check that all leds are lighting.

|--- LED TEST ---| |Are all leds on?|

RP200 INITIAL CHECK

| RP200 | | REALPIANO | | GEM |

| GRP300 | | REALPIANO | | GEM |

Check the VOLUMES ranges from 0 to 127. Check all buttons (except GRAND PIANO) pressing their one at a time and checking that corresponding led lights, pressing PAGE UP and DOWN buttons the display shows "U" and "D", pressing DATA + and - buttons the display shows "+" and "-", pressing MASTER EQ and DSP buttons the display shows an "X" in 1 and 2 digits, pressing UP, LEFT, DOWN and RIGHT buttons the display shows an "X" in 3, 4, 5 and 6 digits respectively.

| |Button test | | |Vol:0 | | 123456|

|U|Button test +| |D|Vol:127 -| | XXXXXX|

Check the SOFT and SUSTAIN pedals, pressing each one the value change from 0 (released) to 127 (pressed), the DAMPER pedal varying its value continuosly from 0 (released) to nearly 127 (pressed).

|Soft Sust Damp| | 0 0 0| | |

Check the MIDI I/O connecting the MIDI OUT and MIDI IN sockets by a MIDI cable.

|TEST MIDI IN/OUT| |LOOP DETECTED OK|

Check COMPUTER I/O shorting pin 3 and pin 5 on the COMPUTER socket, check with the oscilloscope a 4Vpp (1Mhz) signal on pin 1, set volume to half stroke.

|TST COMPUTER I/O| |LOOP DETECTED OK|

The instrument generates a 1KHz sinusoidal signal in both audio channels reading data from 104043 ROM. VOLUME controls the amplitude of signal and TRANSPOSE b and # buttons controls the frequency from 10Hz to 2756Hz.

Now verify the following level of signals: Phones output without load = 5,7±1.1Vpp AUX output = 0,8±0,16Vpp

Set the VOLUME to minimum. Apply a sinusoidal signal of 0.730Vpp at 1KHz with a generator to the AUX IN left and right sockets and verify the signal output: AUX output = 1,35±0.07Vpp

The instrument generates a tone signal in both audio channels reading data from 104023 ROM.

|TONE ON 104023 | | |

Autotest is over, turn off the instrument.

|TEST END: SWITCH| |POWER TO RESTART|

RP200 O.S. UPDATING PROCEDURE up to ver. 2.00 with Updating Software Board (751180)

Operation Descriptions Display

Start with the instrument in AUTOTEST mode as described above and press GRAND PIANO 2 times until the display show the software version loaded in flash memory.

| mmm dd yyyy | |hh:mm:ss V #.##|

Press GRAND PIANO to skip this procedure.

|EPROM to FLASH | |push REC to prog|

The instrument performs the flash memory data checksum and displays it in hexadecimal value.

|cks BT PR ALL| | #### #### ####|

When the display shows this message press REC.

|EPROM to FLASH | |push REC to prog|

|EPROM to FLASH | |prog: 1024/1024K|

The instrument performs the eprom memory data checksum and display it in hexadecimal value, compare this value with the value imprinted onto the EPROM: if it matches the EPROM is good.

|cks BT PR ALL| | #### #### ####|

Press GRAND PIANO to skip this procedure.

|EPROM to FLASH | |push REC to prog|

The instrument performs the flash memory data checksum and display it in hexadecimal value, compare this value with the value imprinted onto the EPROM: if it matches the procedure has been executed succesfully.

|cks BT PR ALL| | #### #### ####|

The procedure proceed as described in AUTOTEST section, if you do not want to check the rest of the instrument simply turn off it.

RP200 O.S. UPDATING PROCEDURE from Serial Port (COMPUTER) ver. 2.xx or greater

Operation Descriptions Display

NOTE: This procedure is valid only if the software version installed on the piano is the

Connect the serial cable between the COMPUTER of the piano and the RS232 COM port of the computer (PC-Ibm or compatible).

Insert the disk in the drive A (or whatever your 3.5" drive is assigned to), open the contents of drive A and double click on the fblaster.exe file.

From the OPTIONS/SETTINGS menu, make sure that the TEST AND PROGRAM choice is selected. This is very important.

Turn on the piano, while holding down the REC button until the display shows:

|READY TO UPDATE | | |

Click with the mouse on the GO! button or, from the ACTION menu, select EXECUTE (ALT+A, E). The piano display appears as follows:

|TESTING... | |n1/n2 PACKETS |

At the end of the test the following display appears:

| TEST OK | | |

After a short time, the following display appears:

|ERASING... | | |

You are now erasing the old operating system from FLASH memory. When the system is erased, the following display appears as your new operating system is installed into Flash Memory:

When the entire update procedure is completed, the following display appears:

|UPDATE_OK:SWITCH| |POWER TO RESTART|

The update has now been successfully completed. Turn off the power switch on the piano, and turn it back on again to use your updated instrument.

RP200 Some Repairing Tips