GEM equinox, Руководство по обслуживанию

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Test Procedure and Adjustment
The procedures that follow must be executed subsequently in
the order specified.
These procedures are not intended to repair a fault but only to
check the correct instrument operations after a repairing execu-
tion.
Test Instruments
þ Dual trace oscilloscope
þ Digital Multimeter
Accessories
þ 8Mbyte DRAM module
þ 2Mbyte DRAM module
þ 2 x 4Mbyte SIMM DRAM modules
þ 1 Hard Disk Kit
þ 1 Vocal Processor Kit
þ 1 3.5inch Diskette
þ 1 SCSI Kit
þ Read/write JOMEGA ZIP SCSI device
þ RS232 loopback (terminal 1-2 and 3-5 shorted)
þ 2 jack-jack cables with a resistor divider inside plugs (10K/
82ohm).
To check completely the keyboard are necessaries all the
optional accessories installed, normally this keyboard have
installed from the manufacturer the 2Mbyte DRAM module only.
Setup
Install all the optional accessories: Hard disk and its 2Mbyte
module (CN9), 8Mbyte module instead the pre-installed 2Mbyte
module on Sample Dram connector CN5, the 2 SIMM modules,
the SCSI and the Vocal processor kits, insert the diskette into
3.5" disk drive.
Set the jumpers on CPU board as follow: J1 at position B and J2
at position 8MB.
Set the JP1 and JP2 jumpers on Supply or Mixer board at position
A.
Connect the R and L outputs to the MIC/LINE inputs using the
appropriate cable.
Connect the external JOMEGA ZIP SCSI device to the SCSI
socket.
Plug the RS232 loopback into the socket.
Checks and Adjustments
þ
Aftertouch
To adjust the keyboard aftertouch locate the VR1 trimmer on
CPU board, connect the scope CH1 probe tip to its center
terminal, probe clip connected at ground, adjust VR1 to obtain
an excursion from 0 to 5V every time a note key is pressed with
different pressure, or to obtain a better adjustment follow the
instructions on ADJUSTMENT TABLE (page 8).
þ
MIDI, RS232 and RS422 mode
Press MIDI, MASTER (F3), PC I/O (F3), set PC1 with DIAL and
press ENTER, set LOCAL to OFF (F1), verify that the keyboard
plays thru RS232 by unplugging and re-inserting the RS232
loopback into the socket.
Press MIDI and F3 twice, rotate the DIAL to set “MACINTOSH”,
check the 1MHz clock appear on pin 1 of COMPUTER socket (use
the second probe tip to do that).
þ
Panel Key and Led
Press SYSTEM, OTHER (F4), INFO (F1) and F4 the display show
a warning message: press ENTER and PANEL (F3) and then press
all the panel buttons checking their operation on display, at the
same time every led of pressed button must light up, except
DISK led.
þ
Pitch Bend and Modulation Wheels
Rotate the Modulation wheel verifying the excursion displayed,
it ranges from 0 to 127.
Rotate the Pitch Bender wheel verifying the excursion displayed,
it ranges from 0 to 127 with 64 on center position, a slightly
difference may be adjusted by VR11 on Controls panel board,
major differences may be adjusted repositioning the knob or the
potentiometer.
Press ENTER and ESCAPE simultaneously to return to HARD-
WARE test menu.
þ
Memories and Optional Accessories
Press DEVICE (F1), the instrument self-test check subsequently
the follow devices: SIMM modules (VDRAM), 8Mbyte sample
dram (BDRAM), 3.5" disk drive (FD), SCSI interface (SCSI) and
hard disk (HD) marking with “pass” all devices checked success-
fully, with “np” all devices not present, with “fault” all device
defective. Theoretically all test must be passed, if you have a
mistake on a device re-check its installation.
Press ENTER if necessary.
þ
Inputs, Dsp and Vocal Processor
Put MASTER - INPUT - LEVEL sliders to maximum position and
rotate full clockwise GAIN1 and GAIN2 potentiometer located on
the rear side.
Measure a sinusoidal signal at 4Vpp on OUT 1 and OUT 2 outputs
sockets (the 1KHz tone gets out OUT R and L, re-input thru MIC
1 and 2 by the appropriate cable, pass thru DSPs and finally get
out from OUT 1 and 2).
Turn off the signal by means SIGNAL (F4).
þ
Noise level
Turn off the instrument, disconnect the signal cable, wait at least
30 seconds, turn on again the keyboard and check the noise level
is acceptable (if not verify the insulation between electrical and
chassis ground is at least 40Kohms).
þ
Data Hold
Press SYSTEM, OTHER (F4), INFO (F1), F4 , ENTER and DHOLD
(F2) and then wait until the display show PASS.
Turn off the keyboard and then remove not included optional kits
(the EQUINOX base version is equipped with 2Mbyte SAMPLE
DRAM only), restore the jumpers positions: J1 to A, J2 to 2MB,
JP1 & 2 to B. Turn on again the instrument and verify, repeating
the test, that only BDRAM pass.
þ
Final
Verify the keyboard correct operation playing something on it,
and finally launch the Sounds sequence pressing PROGRAM,
SHUFFLE (F4), MAKE (F1). When it is finished you have tested
the keyboard.
Spare Part List
Legend
EU =Specify European Version (230Vac)
US =Specify U.S. Version (115Vac)
61N =only for model with 61 Notes
76N =only for model with 76 Notes
GEM =Specify GEM Brand Version
GM =Specify Generalmusic Brand Version
1 =1st Version with Traditional supply circuit
2 =2nd Version with Switching supply circuit
The 1st and 2nd versions differ only by supply unit and its related circuits, these are also
recognizable by the code imprinted on the rear label, where 1st versions are:
995155 Equinox 61N GEM Brand 230Vac (EU)
995156 Equinox 61N Generalmusic Brand 115Vac (US)
995157 Equinox 76N GEM Brand 230Vac (EU)
995158 Equinox 76N Generalmusic Brand 115Vac (US)
and 2nd versions are:
995167 Equinox 61N GEM Brand 115-230Vac
995168 Equinox 61N Generalmusic Brand 115-230Vac
995169 Equinox 76N GEM Brand 115-230Vac
995170 Equinox 76N Generalmusic Brand 115-230Vac
Ref Code Description
Accessories
970329 Owner’s Manual (English Version)
970328 Owner’s Manual (Italian Version)
955913 Operating System Disk
955912 Demo Disk
300617 Owner’s Manual Folder
130276 Mains Cable (US)
130274 Mains Cable (EU)
Optional Accessories
970124 Carring Bag (61N)
970125 Carring Bag (76N)
970110 X-Metal Stand
970300 50+50W Amplified Stand (EU)
970311 50+50W Amplified Stand (US)
970116 Single Foot Switch
970080 Triple Foot Switch
970134 Piano Single Foot Switch
970107 Volume Pedal
970084 Dynamic Pedalboard
130301 2mt Midi Cable
970310 Multimedia Kit
130429 * 3mt RS232 Cable (MiniDin 8 To D-Sub 9)
970207 Hard Disk Installation Kit
20 970333 Power Station Kit (970207 included)
761094 * 2Mbyte Backed Dram Module
561006 * 2Gbyte Equinox Hard Disk Unit with Various Contents
17 340905 * Rubber Suspension
18 120029 * M3x6mm Screw
19 120451 * M3 Washer
22 970213 2Mbyte Backed Samples Dram
23 970331 8Mbyte Backed Samples Dram
16 970330 SCSI Interface Kit
21 970225 Volatile SIMM Dram
100742 * 4MByte SIMM Module
24 970334 Vocal Processor Kit
841152 * 34 Wires 5cm Length Flat Cable
841030 * 16 Wires 5cm Length Flat Cable
840202 * 9 Wires 10cm Length Flat Cable
841025 * 2 Wires 10cm Length Screened Cable
761093 * Buffer Module Board (Pcb# 315023)
103013 ** 74HC138D SOIC 1 Of 8 Decoder
103003 ** 74HC374DW SOIC Octal D-Type Flip-Flop
761167 * Vocal Processor Board (Pcb# 315109)
230561 ** 47uH 10% 100mA RF-Coil
141016 ** 16 Contacts Vert Female Connector
140917 ** 2 Contacts Vert Male Connector
140866 ** 34 Contacts Vert Male Connector
140324 ** 9 Contacts Vert Male Connector
106003 ** MAX709 Power Monitor With Reset
105010 ** ADSP2181 Dsp Microcomputer
103031 ** 74HC00D SOIC Quad Nand Gate
103030 ** 74HC32D SOIC Or Nand Gate
103012 ** 74HC125D SOIC Quad Tri-State Buffer
103011 ** AD1877 SOIC Dual Channel 1bit ADC
103007 ** 74HC74D SOIC Dual Flip-Flop
101500 ** 74AC138D SOIC 1 Of 8 Decoder
100059 ** 7805 +5V 1A Voltage Regulator
081000 ** PMLL4148 Smd 100mA 75V Signal Diode
271230 * Vocal Processor Owner’s Manual Addendum
120003 * M3x8mm Screw
Cabinet Assembly
Bottom Assembly
731009 Gnd-Shield Board (Pcb#315164)
31 660455 Bottom Chassis (61N)(1)
31 660459 Bottom Chassis (76N)(1)
31 660463 Bottom Chassis (61N)(2)
31 660464 Bottom Chassis (76N)(2)
29 652734 Left Side
30 652733 Right Side
340357 Spacer For Left & Right Side
340435 Adhesive Foot
Top Assembly
40 660454 Top Chassis with “GEM” Logo (61N)(1)
40 660456 Top Chassis with “GM” Logo (61N)(1)
40 660458 Top Chassis with “GEM” Logo (76N)(1)
40 660460 Top Chassis with “GM” Logo (76N)(1)
40 660465 Top Chassis with “GEM” Logo (61N)(2)
40 660466 Top Chassis with “GM” Logo (61N)(2)
40 660467 Top Chassis with “GEM” Logo (76N)(2)
40 660468 Top Chassis with “GM” Logo (76N)(2)
68 660453 SCSI Slot Closer
66 652749 Dual Slider Potentiometer Support
65 652748 Octal Slider Potentiometer Support
64 652735 Display Screen
32 652732 Left-Top Plastic Chassis
41 652731 Right-Top Plastic Chassis
340586 Insulant Spacer
58 340572 Led Light Diffuser
63 340570 Arrow Actuator
340566 Back-plate for Controls Panel
340556 Polycarbonate Washer for Dial
340542 Controls Lower Spacer
340521 Dial Support
62 340493 Dial Knob
56 340372 Led Light Diffuser for Actuator
61 340370 Contrast Knob
57 340369 6x15mm Push Cap
59 340368 6x8mm Push Cap
67 340367 Slider Knob
60 340365 “Enter/Escape” Push Cap
340186 Adhesive Cable Fixing
340092 5mm Board Spacer
10 171583 3 Din Sockets Reinforcement
8 171472 Analog I/O Board Support
11 171454 Controls Interface Board Support
13 171451 4 Jack Sockets Reinforcement
9 171450 6 Jack Sockets Reinforcement
171444 “Enter/Escape” Reinforcement
171438 Controls Panel Spacer
12 171424 4 Din Sockets Reinforcement
171397 Spacer For R-Top Plastic Chassis
171396 Spacer For L-Top Plastic Chassis
171004 Right Disk Drive Support
171003 Left Disk Drive Support
120960 Dial Steel Sphere
35 110400 3.5" Disk Drive
39 110254 Rotary Encoder With Snap
Mains Filter & Transformer Assembly (1)
730681 Mains Switch Assembly
69 340359 ** Power Switch Frame
171008 ** Mains Socket & Power Switch Support
1 110614 ** Mains Socket
2 110285 ** Power Switch
4 767988 Mains Filter Board (Pcb#315014) (EU) (1)
4 768006 Mains Filter Board (Pcb#315014) (US) (1)
230568 * 10mH 250Vac 1A AC Line EMI Coil “Siemens”
140010 * 3 Contacts P=10 Vert Terminal Block
110113 * Fuse Clip 5x20mm 6A max (EU)
110114 * Fuse Clip 6.3x32mm 10A Max (US)
020493 * 100n 250Vac MKP EMI Capacitor “Siemens”
010545 * 4n7 250V Ceramic Capacitor (Iec-Ul-Csa)
5 230127 Transformer 230Vac 120W (EU) (1)
5 230129 Transformer 115Vac 120W (US) (1)
110011 T1A Fuse 5x20mm (EU) (1)
110083 T2A Fuse 6.3x32mm (US) (1)
Power Supply Board (1)
6 730993 Power Supply Board (Pcb#315116) (1)
230524 * 100uH Switching Coil
141015 * 14 Contacts Vert Female Connector
141010 * 4 Contacts Vert Female Connector
140874 * Single In Line Vert Male Strip (specify contacts)
þ
Reliability Check
Before reassembling the instrument and before deliver it to the
user, it is a goal verify its reliability:
To do that switch it off, or leaving it switched on but operating
with greatest caution, carefully shake the boards and connec-
tions inside it using an insulated tool (for example the handle of
the screwdriver) to find wrong contacts and so on.
Turn on the instrument and verify that it operates correctly
repeating the Final Check.
Disconnect the instrument from the mains, reassemble it and
shake it carefully without causing aesthetics damages, re-
connect it to the mains, turn on and re-check its functionality,
finally leave it switched on for a long time verifing its function-
ality occasionnally.