Fender Cyber-Twin User manual

CYBER-TWIN

p/n 022-9000-000 (120V)
SERVICE MANUAL
CONTENTS:
Notices
Specifications
Troubleshooting Guides:
Step by step
User interface
Flow charts
Cyber-Twin Presets
Parts lists:
PCB assy - Main
PCB assy - Host
PCB assy – Frnt Panel
PCB assy – Analog I/O
Chassis assembly
Cabinet assembly
End item
Schematics/drawings
Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258

CYBER-TWIN Service Manual
JANUARY 2001
IMPORTANT NOTICE:
The information contained herein is CONFIDENTIAL and PROPRIETARY to Fender Musical Instruments Corp. It is
disclosed solely for use by qualified technicians for purposes of equipment maintenance and service. It is not to be
disclosed to others without the expressed permission of Fender Musical Instruments Co. All specifications subject to
change without notice.
For warranty repair service, only Fender specified part numbers are to be used. It is recommended they also be used
for post-warranty maintenance and repair.
Parts marked with an asterisk (*) indicate the required use of that specific part. This is necessary for RELIABILITY and
SAFETY requirements. DO NOT USE A SUBSTITUTE!
A coded naming convention is used in the description of certain parts. The codes and what they mean are as follows:
CAPACITOR CODES HARDWARE CODES
CAP AE = Aluminum Electrolytic BLX = Black Oxide
CAP CA = Ceramic Axial CR = Chrome Plated
CAP CD = Ceramic Disk HWH = Hex Washer Head
CAP MPF = Metalized Polyester Film M = Machine Screw
CAP MY = Mylar NI = Nickel Plated
CAP PFF = Polyester Film/Foil OHP = Oval Head Phillips
PB = Particle Board
RESISTOR CODES PHP = Pan Head Phillips
PHPS = Pan Head Phillips Sems
RES CC = Carbon Comp SMA = Sheet Metal "A" Point
RES CF = Carbon Film SMB = Sheet Metal "B" Point
RES FP = Flame Proof SS = Stainless Steel
RES MF = Metal Film TF = Thread Forming
RES WW = Wire Wound ZI = Zinc Plated

CYBER-TWIN Service Manual
SPECIFICATIONS
Product Release No.: PR 393 (This is not a model number)
Part Number: 120V Version : 22-9000
240V Aus : 22-9030
230V UK : 22-9040
230V Eur : 22-9060
100V : 22-9070
Power Requirements: 360W
Power Output: 65 W (per channel, 130W total) @ 5% THD
Sensitivity: Adjustable using trim control
Preamp Input impedance: 900kΩ
Effects Loop:
Send impedance: 220kΩ
Return impedance: 20kΩ
Nominal level: -10dBV/+4dbu (switchable)
SPDIF line out jack: RCA jack, digital stereo
XLR output jacks: 0dBV, balanced, stereo/mono switchable
Impedance: 300Ωbalanced
Tube complement: Two Groove Tubes, 12AX7WA
Speakers: Two Celestion G12T-100 8Ω12" (P/N 054420)
Fuses: Primary: 100/120V: F4A 125V
Secondary: Digital supply: F2A Analog supply: 2 x T1A
Footswitch: Four-button (remote Quick Access key access)
5-pin MIDI type cord
Dimensions: Height:18 9/32" (46.4 cm)
Width: 26 1/8" (66.4 cm)
Depth: 12 1/8" (30.8 cm)
Weight: 55 lbs. (25 kg)
Product specifications are subject to change without notice

CYBER-TWIN Service Manual
Step by Step
Fender Cyber-Twin Troubleshooting Guide for Hardware Problems
NO AUDIO
Setup: Follow the instructions as stated under notes 8, on the Cyber-Twin Main Schematics
(0055766000 Sheet1).
1. Turn on the Power to the Cyber-Twin.
2. Does the Jewel LED come on?
1.1If the Jewel LED does not come on, but there is Audio, check the Jewel LED.
1.2If the Jewel LED does not come on and there is no Audio, check the Power Supplies.
2 Does the VFD (Vacuum Flourescent Display) come on?
2.1If the VFD does not come on, but there is Audio, check the VFD.
2.2If the VFD does not come on and there is no Audio, check the Power Supplies.
2.2.1 If the Power Supplies are OK then check the Ribbon cables.
2.2.2 If the Ribbon cables are OK, swap the Host board.
3 If both the Jewel LED and the VFD come on, but there is no Audio, then check the speaker
connections. Remove any rear panel audio connections (Headphones, FX etc).
4 If the Speakers are OK and there is no Audio, then check the Power Supplies.
5 If the Power Supplies are OK, check for Audio on Effects Send.
5.1If there is no Audio on Effects Send.
5.1.1 Check for Audio on U7 Pin1 on the Main PCB.
5.1.2 If there is Audio on U7, then swap the Analog I/O PCB.
5.1.3 If there is no Audio on U7, then check for Audio on P1B Pin 7 & 8 on the Host PCB.
5.1.4 If there is no Audio on P1B Pin 7 & 8, then troubleshoot the Pre-amp section on the
Main PCB.
5.1.5 If there is Audio on P1B Pin 7 & 8, then check for Audio on P1B Pin 1 & 2 on the
Host PCB.
5.1.6 If there is no Audio on P1B Pin 1 & 2, then swap the Host PCB.
5.1.7 If there is Audio on P1B Pin 1 & 2, then troubleshoot the Distortion section on the
Main PCB.
5.2If there is Audio on Effects Send.
5.2.1 Check for Audio on P3B Pin 7 & 8 on the Analog PCB.
5.2.2 If there is no Audio on P3B Pin 7 & 8, then swap the Analog I/O PCB.
5.2.3 If there is Audio on P3B Pin 7 & 8, then check for Audio on P2B Pin 1 & 3 on the
Host PCB.
5.2.4 If there is no Audio on P2B Pin 1 & 3, then swap the Host PCB.
5.2.5 If there is Audio on P2B Pin 1 & 3, then troubleshoot the Power Amp section on the
Main PCB.

CYBER-TWIN Service Manual
MOTOR POT DOES NOT WORK
Setup: Follow the Motor Pot Test instructions described on the Motor Pot A/D Section Schematics
(005576600 Sheet 4).
1. If the Motor Pots do not work then check if the Power Supplies are OK and troubleshoot if
necessary.
2. If the Power Supplies are OK, check the voltage on the PW# Pins while running the Pot test.
3. If the correct voltage is present on the PW# Pins, then swap the damaged Motor Pots.
4. If there is no voltage present on the PW# Pins, then check for the correct voltage, specified on
the Schematics, on Pin 1 & 3 of the BA6218 controllers.
5. If there is a voltage on the input of the BA6218 controllers, but the Motor Pot does not work,
then swap the damaged BA6218.
6. If there is no Voltage present on Pin 1 & 3 of the BA6218 controllers, then proceed to the
Digital Test described on the Motor Pot A/D Section Schematics (0055766000 Sheet 4).
MIDI IS NOT WORKING
Setup: Follow the Midi Test instructions described on the Digital I/O Board Section Schematics
(0055766000 Sheet 3).
1. Check for Midi activity on the Midi test points.
2. Check for Midi activity on P5B Pin 1 & 3.
2.1If there is Midi activity on P5B Pin 1 & 3, then troubleshoot in the area around
U33 and U34 or swap Digital I/O boards.
2.2If there is no Midi activity on P5B Pin 1 & 3, then check if ribbon cable on P5 is OK.
3 If the ribbon cable on P5 is OK, check the ribbon cable on P6, otherwise swap the ribbon
cable on P5.
4 If the ribbon cable on P6 is OK, swap the Host PCB, otherwise swap the ribbon cable on P6.
NO AUDIO ON HEADPHONES JACK
Setup: Follow the instructions as stated under notes 8, on the Cyber-Twin Main Schematics
(0055766000 Sheet1).
1. Check for Audio Output through the Speakers with Headphones unplugged.
2. If there is no Audio Output through the Speakers proceed to the previous troubleshooting
section NO AUDIO.

CYBER-TWIN Service Manual
NO AUDIO ON HEADPHONES JACK (cont)
3. If there is Audio Output through the Speakers, check if ribbon cable P3 is OK.
3.1If the ribbon cable is OK, then swap the Analog I/O PCB.
3.2 If the ribbon cable is defective, then swap the cable.
FX KILL/ FOOTSWITCH IS NOT WORKING
Setup: See Footswitch Notes on the Digital I/O Board Section Schematics (0055766000 Sheet 3).
1. Check the Voltage on U26 Pins 4,5,10,11,12.
2. If the Voltages are not correct check the Power Supply.
2.1.If the Power Supply is OK check the area around J3 and J5.
3. If the Voltages are correct check for Digital Activity on U26 Pins 7 & 15.
3.1.If there is no Digital Activity on Pins 7 & 15 check the Ribbon Cable P4 and swap if
necessary.
3.1.1. If the Ribbon Cable on P4 is OK, check the Ribbon cable on P7. Swap if necessary,
otherwise swap the Front Panel PCB (0055754000).
4. If there is Digital Activity on Pins 7 & 15, check for Digital Activity on U26 Pin 13.
4.1.If there is no Digital Activity on Pin 13 swap U26, otherwise check the Ribbon Cable P4
and swap if necessary.
4.1.1. If the Ribbon Cable on P4 is OK, check the Ribbon Cable on P7. Swap if
necessary, otherwise swap the Front Panel PCB (0055754000).

CYBER-TWIN Service Manual
Fender Cyber-Twin Troubleshooting Guide for User Interface Problems
NO SOUND
What to check:
- The LED ladder is not coming on when hitting a string.
- The TRIM, GAIN, VOLUME or MASTER is turned to 1.
- Something is plugged into the L/MONO EFFECTS RETURN jack, or the HEADPHONES jack.
How to solve the problem:
- Turn up the guitar VOLUME or the amp TRIM controls so that green LED’s turn on.
- Turn TRIM, GAIN, VOLUME or MASTER past 1.
- Unplug connector from L/MONO EFFECTS RETURN jack, or the HEADPHONES jack.
NO EFFECTS
What to check:
- The effects function in the FX Menu is turned to NONE.
- The effect output level is turned to 1.0.
- FX Kill switch is enabled.
How to solve the problem:
- Press the FX menu button and turn on an effect.
- Turn the effects level past 1.0 on the FX LEVEL knob.
- Use the FX Kill footswitch to disable the function.
DELAY TIME CHANGE SOUNDS ABRUPT
What to check:
- The DELAY TIME CHANGE function is set to STEP.
How to solve the problem:
- Press the FX menu button 7x to get to the DELAY TIME CHANGE function, and turn it to
RAMP.

CYBER-TWIN Service Manual
NO REVERB
What to check:
- The REVERB control is turned to 1.
- The REVERB INPUT is turned to 1.0.
- FX Kill switch is enabled.
How to solve the problem:
- Turn the REVERB knob on the front panel past 1.
- Press the AMP menu button 6x to get to the REVERB INPUT function, and turn REVERB
INPUT past 1.0.
- Use the FX Kill Footswitch to disable the function.
NO MIDI RECEPTION/ TRANSMISSION
What to check:
- The MIDI connection between the Cybertwin and another MIDI device is incorrect.
- The MIDI RECEIVE CHANNEL on the Cybertwin is set to a different channel than the
transmitting MIDI device.
- The TRANSMIT CHANNEL on the Cybertwin is turned OFF.
How to solve the problem:
- Connect the MIDI cables as follows:
Cybertwin MIDI IN !Device MIDI OUT
Cybertwin MIDI OUT !Device MIDI IN
- Press the UTILITY menu button 5x to get to the MIDI RECEIVE CH function and set the
RECEIVE CHANNEL to the same channel as the transmitting device or set the RECEIVE
CHANNEL to OMNI.
- Press the UTILITY menu button 6x and turn the MIDI TRANSMIT CH to the desired channel.
AMP WILL NOT RECEIVE SysEx INFORMATION
What to check:
- The SysEx DEVICE ID is turned to a different value than when the SYSEX data dump was
done.
How to solve the problem:
- Press the UTILITY menu button 7x to go to the SYSEX DEVICE ID function, and set the
DEVICE ID to the same value as when the SYSEX data dump was completed or set the
SYSEX DEVICE ID to OMNI.

CYBER-TWIN Service Manual
AMP DOES NOT LOAD PRESETS OR WILL NOT SAVE A PRESET
What to check:
- DEMO MODE is turned ON.
- MEMORY PROTECT is turned ON.
How to solve the problem:
- Press the UTILITY menu button 1x to go to the DEMO MODE function and turn DEMO MODE
OFF.
- Press the UTILITY menu button 2x to go to the MEMORY PROTECT function and turn
MEMORY PROTECT OFF.
LOW END IN SOUND IS MISSING
What to check:
- LINE/SPKR PHASE is set to RIGHT or LEFT REVERSE POLARITY.
- Speaker wiring has been switched.
How to solve the problem:
- Press the AMP menu button 11x to get to the LINE/SPKR PHASE function and turn it to
STANDARD POLARITY.
- Connect the white cable to the positive speaker connection and the black cable to the negative
speaker connection.
EXPRESSION PEDAL DOES NOT WORK
What to check:
- The expression pedal is plugged in incorrectly.
- The EXPRESSION PEDAL function is switched to an incorrect control parameter.
How to solve the problem:
- Plug expression pedal into the EXPRESSION PEDAL jack on the rear panel.
- Press the AMP menu button 15x to get to the EXPRESSION PEDAL function and turn it to the
desired control parameter.

CYBER-TWIN Service Manual
MIDI FOOT-PEDAL DOES NOT WORK
What to check:
- The MIDI RECEIVE CHANNEL on the Cybertwin is set to a different channel than the
transmitting MIDI device.
- The CONTINUOUS CONTROLLER on the Cybertwin is set to a different CONTINUOUS
CONTOLLER value on the foot-pedal.
- The CONTINUOUS CONTROLLER is switched to an incorrect control parameter.
How to solve the problem:
- Press the UTILITY menu button 5x to get to the MIDI RECEIVE CH function and set the
RECEIVE CHANNEL to the same channel as the transmitting device or set the RECEIVE
CHANNEL to OMNI.
- Press the UTILITY menu button 4x to get to the CONTINUOUS CONTROLLER function and
turn it to the same value as the foot-pedal.
- Press the AMP menu button 16x to get to the CONTINUOUS CONTROLLER function and turn
it to the parameter you would like to control.
DRY GUITAR SIGNAL ON SPDIF OUTPUT
What to check:
- SPDIF PATCHING is switched to GUITAR DIRECT OUT.
How to solve the problem:
- Press the UTILITY menu button 3x to get to the SPDIF PATCHING function and turn it to AMP
LINE OUT.
PROGRAM CHANGE DOES NOT WORK CORRECTLY
What to check:
- MIDI MAPPING is used incorrectly.
How to solve the problem:
- Press the UTILITY menu button 8x to get to the MIDI MAPPING function and map the correct
preset to the desired program change value.

NO AUDIO
NO YES YES NO
YES
YES NO NO YES NO
YES NO NO YES
NO
YES YES NO
NO YES
NO YES NO YES
NO
YES
NO YES
NO
YES
Power Switch
Jewel LED
On VFD On
A
ud
i
o
Amp
OK
A
ud
i
o
A
ud
i
o
Check
Jewel LED Check Power Supplies Speakers Plugged In
(Remove any plugs
from the rear panel)
Check
VFD Power Supplies OK
Troubleshoot
Power Supplies
Power Supplies
OK Plug In
Speakers Troubleshoot Power Supplies Ribbon Cables
OK
Swap
Ribbon Cables
Swap
Host PCB
(0055736000)
Audio on
Effects Send
Audio on
U7 Pin1
Main PCB
(
0055766000
)
Audio on
P3B Pin7&8
Analog I/O PCB
(
0056333000
)
Swap
Analog I/O PCB
(0056333000)
Audio on
P2B Pin1&3
Host PCB
(0055736000)
Audio on
P1B Pin7&8
Host PCB
(
0055736000
)
Swap
Host PCB
(
0055736000
)
Troubleshoot
Pre-Amp Section
on Main PCB
(
0055766000
)
Audio on
P1B Pin1&2
Host PCB
(
0055736000
)
Swap
Host PCB
(0055736000)
Troubleshoot
Power Amp
Section on
Main PCB
(
0055766000
)
Troubleshoot
Distortion
Section on
Main PCB
(
0055766000
)

MOTOR POT DOES NOT WORK
YES
NO
YES NO
YES NO
YES NO
Run Motor Pot Test described on
Motor Pot A/D Section
Schematic (0055766000)
Amp
OK Motor Pot OK
Power Supplies
OK
Voltage on PW
Pins 1-8 while
runnin
g
Pot test
Troubleshoot Power
Supplies in Motor Pot A/D
Section on Main PCB
(0055766000)
Swap Motor
Pot Voltage on Pin1&3 of
BA6218 Controller
Proceed to Digital Test
described on Motor Pot
A/D Section Schematic
(0055766000)
Swap BA6218
Controller

MIDI IS NOT WORKING
YES NO
YES NO
YES NO
YES NO
Do Midi Test as described on
Digital I/O Board Section
Schematics
(
0055766000
)
Midi is
working
Midi Activity on
TP 47,48,49
Midi Activity on
P5B Pin1&3
Swap
Digital I/O PCB
(
0055766000
)
Ribbon Cable on P5
OK
Ribbon Cable on P6
OK Swap
Ribbon Cable
on P5
Swap
Ribbon Cable
on P6
Swap
Host PCB
(
0055736000
)

HEADPHONES ARE NOT WORKING
NO YES
NO YES
Audio Output
through Speakers
with Headphones unplugged
Proceed to
NO AUDIO
worksheet
Ribbon Cable
on P3 OK
Swap
Ribbon Cable
on P3
Swap
Analog I/O PCB
(0056333000)

FX KILL/ FOOTSWITCH IS NOT WORKING
NO YES
NO YES NO YES
NO YES NO YES
NO YES NO YES
NO YES
See Footswitch Notes on
Digital I/O Board Section
Schematics
(
0055766000
)
Power
Supply
OK
Voltage on
U26 Pins
4,5,10,11,12
Digital Activity
on U26 Pins 7&15
Troubleshoot
Power Supply Troubleshoot area around J3 or J5 Ribbon Cable P4
OK Digital Activity
on U26 Pin 13
Swap U26
SN74HC166N Ribbon Cable P4 OK
Swap Ribbon
Cable P4 Ribbon Cable P7
OK
Swap Ribbon
Cable P7 Swap Front Panel
PCB
(0055754000)
Ribbon Cable P7
OK
Swap Ribbon
Cable P7 Swap Front Panel
PCB
(0055754000)
Swap Ribbon
Cable P4

Cyber-Twin Presets

CYBER-TWIN Service Manual
PARTS LIST
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY
PRINTED CIRCUIT BOARD ASSEMBLY – MAIN
QTY PART # DESCRIPTION REFERENCE DESIGNATION
4 0055166000 BRACKET R/A PC MNT #6-32 BK1 BK2 BK3 BK4
1 0029719000 CABLE FLAT 5 CKT 10” PW9
2 0038689001 CAP AE AX .47Uf 100V 20% C52 C97
4 0038692001 CAP AE AX 10Uf 35V 20% C1 C42 C107 C109
2 0026517001 CAP AE AX 2.2Uf 50V 20% C49 C84
9 0009512001 CAP AE AX 22Uf 25V 20% C17 C27 C45 C55 C65 C302-303 C402-403
5 0038691001 CAP AE AX 4.7Uf 50V 20% C30 C39-40 C43-44
3 0038693001 CAP AE AX 47Uf 16V 20% C56 C114 C121
3 0028474003 CAP AE RDL 100Uf 25V 20% C14 C38 C91
1 0055991000 CAP AE RDL 2200Uf 16V 20% C144
2 0033607000 CAP AE RDL 2200Uf 35V 20% C132-133
4 0054204000 CAP AE RDL 22Uf 450V 20% C125 C127 C143 C148
3 0028467003 CAP AE RDL 22Uf 50V 20% C3 C304 C404
1 0055992000 CAP AE RDL 4700Uf 16V 20% C145
2 0031756000 CAP AE RDL 4700Uf 50V C130-131
8 0028485003 CAP AE RDL 470Uf 16V 20% C51 C64 C73 C79 C86 C95 C101 C103
2 0028471003 CAP AE RDL 47Uf 50V 20% C120 C126
4 0038699001 CAP CA 100Pf 100V LL C4 C10 C12 C29
5 0039259001 CAP CA 220Pf 100V LL C147 C307-308 C407-408
8 0038873001 CAP CA 22Pf 100V LL C105 C115 C117-118 C122-124 C128
5 0042001001 CAP CA 33Pf 100V LL C48 C54 C69 C99 C104
3 0038701001 CAP CA 470Pf 50V LL C60 C134 C146
2 0051459003 CAP CD 560Pf 500V LL C32-33
1 0025995000 CAP CD 8200Pf 1000V 20% C149
38 0034788003 CAP CR .1Uf 50V 20% .2” LS C13 C16 C18 C22-23 C50 C58-59 C61-62 C67 C70 C72 C75-
77 C80 C83 C85 C87-89 C92-93 C100 C102 C110-112 C116
C129 C135 C140-141 C151-154
2 0027255003 CAP MPF .001Uf 100V 10% C20 C53
2 0027257003 CAP MPF .0022Uf 100V 10% C301 C401
3 0027263003 CAP MPF .0082Uf 100V 10% C2 C6 C46
2 0027265003 CAP MPF .015Uf 100V 10% C35 C37
2 0027264003 CAP MPF .01Uf 100V 10% C28 C31
14 0027272003 CAP MPF .047Uf 63V 10% C7 C11 C34 C66 C68 C71 C74 C78 C81-82 C90 C94 C96 C98
1 0027275003 CAP MPF .068Uf 100V 10% C9
1 0027280003 CAP MPF .15Uf 63V 10% C47
2 0052003003 CAP MPF .1Uf 250V 10% C138-139
1 0053860000 CAP MPF .1Uf 250VAC 20% C142
8 0027278003 CAP MPF .1Uf 63V 10% C63 C136-137 C150 C305 C309 C405 C409
2 0027281003 CAP MPF .22Uf 63V 10% C5 C57
4 0027283003 CAP MPF .33Uf 63V 10% C106 C108 C113 C119
2 0027285003 CAP MPF .39Uf 63V 10% C306 C406
2 0027286003 CAP MPF .47Uf 63V 10% C21 C26
3 0033477003 CAP MPF .68Uf 63V 10% C15 C19 C36
1 0024823000 CAP MPF RDL .01Uf 400V 10% C41
3 0024845000 CAP MPF RDL .047Uf 400V 10% C8 C24-25
4 0051931000 CONNECTOR DIN 5 PIN FEMALE J3 J6-8 (Footswitch Midi-in Midi-out Midi-thru)
8 0037985000 SCRW SMA 2X3/8 PHP BLX @ J3 J6-8 (2 ea.)

CYBER-TWIN Service Manual
PRINTED CIRCUIT BOARD ASSEMBLY – MAIN (cont)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
8 0055993000 CONTROL MOTORIZED 10kB R80 R104 R123 R137 R144 R150 R162 R168 (Gain
Volume Treble Middle Bass Presence Reverb Master)
1 0055994000 CONTROL SNAPIN 25k 30A R35 (Trim)
1 0019994000 CONTROL T-POT 100k 20% PC MTG R71 (Comp. Offset Adjust)
13 0064089001 DIODE 1N4003 D32-35 D41-45 D314-315 D414-415
4 0026730001 DIODE 1N4006 800V 1A D46-47 D52-53
49 0006260001 DIODE 1N4448 SIGNAL LL D1-2 D4-16 D19-27 D29-30 D36 D301-306 D308-310 D312-313
D401-406 D408-410 D412-413
4 0020534000 DIODE 1N5402 RECTIFIER 200V C&F D48-51
4 0029045000 DIODE 6A 400V 6A4 LEAD FORMED D37-40
4 0025821001 DIODE HV FDH400 SWITCHING LL D307 D311 D407 D411
2 0031729001 DIODE ZEN 1N5231B 5.1V 5% LL Z1-2
2 0031635001 DIODE ZEN 1N5240B 10V 5% LL D28 D31
18 0025802000 FASTON TAB, .250" P1-18
8 0051094003 FUSE CLIP PCB 5mm (EXPT) F1-4
2 0013112000 FUSE TD 20mmx5mm 250V 1A @ F2-3
1 0020794000 FUSE QA 20mmx5mm 250V 2A @ F4
4 0027419000 HDR .1 CTR 10 CKT SQ PIN P4A P4B P6A P7A
1 0027421000 HDR .1 CTR 12 CKT SQ PIN P3A
2 0027413000 HDR .1 CTR 6 CKT SQ PIN P5A P5B
2 0027416000 HDR .1 CTR 8 CKT SQ PIN P1A P2A
2 0025796000 HEATSINK TO-220 @ U30 U32
2 0050849000 HEATSINK PCB LEVEL 576012U @ U28 U31
2 0039420000 SCRW M 4-40x3/8 PHP SS SEMS @ U28 U31
2 0097360000 NUT HEX 4-40 EX LOCK @ U28 U31
1 0055881000 HEATSINK PLATE 4 PLACE HS1
3 0032908000 SCRW TF 6-32x3/8 PHP ZI @ HS1
1 0055995000 IC 3-TO-8 DECODER 74HC138 U16
1 0055996000 IC 8-BIT A/D TLC542 U10
4 0055997000 IC 8-BIT ADDR LATCH 74HC259 U11 U13 U17 U21
1 0055985000 IC 8-BIT SHIFT REG 74HC166 U26
1 0055999000 IC 8-BIT SHIFT REG 74HC595 U19
4 0026547000 IC COMPARATOR QUAD LM339 U8 U14 U20 U23
8 0056311000 IC MOTOR DRIVER BA6218 U5 U9 U12 U15 U18 U22 U24-25
1 0033281000 IC OP-AMP DUAL 5532 U3
2 0031611000 IC OP-AMP DUAL PC4560 U2 U4
2 0016795000 IC OP-AMP DUAL TL072 U6-7
1 0056323000 IC OPTOCOUPLER 6N138 U34
1 0027404000 IC OTA CA3080AE U1
1 0051190000 IC QUAD 2-IN NAND GATE 74HC00 U33
1 0013562000 IC REGULATOR +15V MC7815CT U30
2 0041812000 IC REGULATOR +5V MC7805CT U28 U31
2 0054380003 IC REGULATOR +5V MC78L05ACPRA U27 U29
1 0013564000 IC REGULATOR -15V MC7915CT U32
2 0051658000 JACK MONO R/A J4-5 (Exp-pedal Rev/FX-bypass)
1 0056325000 JACK RCA SINGLE HORIZ PC MOUNT J1 (SPDIF Output)
1 0053450000 JACK STEREO R/A J2 (Input)
1 0056326000 LED QUAD G/G/G/R HORIZ MNT D3
2 0049948000 LED RED LONG LEAD LUMEX D17-18
1 0056327000 OPTOISOLATR LED NSL32S003 OP1
2 0031901000 PIN MALE PCB .093 DIA. P19-20
1 0036613000 RELAY DPDT DIP 24VOLT 8.3mA K1
1 0026549001 RES CF 1/2W 5% 1.5k LL R122

CYBER-TWIN Service Manual
PRINTED CIRCUIT BOARD ASSEMBLY – MAIN (cont)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0031065001 RES CF 1/2W 5% 91k LL R48
3 0025116001 RES CF 1/2W 5% 100k LL R1 R18 R25
2 0025117001 RES CF 1/2W 5% 220k LL R213-214
4 0028842001 RES CF 1/4W 5% 1.1k LL R320-321 R420-421
2 0028862001 RES CF 1/4W 5% 1.3k LL R62 R81
4 0024969001 RES CF 1/4W 5% 1.5k LL R2 R22 R40 R45
1 0024970001 RES CF 1/4W 5% 1.8k LL R106
9 0024997001 RES CF 1/4W 5% 100k LL R17 R19 R21 R27 R49 R63 R89 R117 R181
19 0024952001 RES CF 1/4W 5% 100ohm LL R171-172 R174 R176-180 R182-183 R186-188
+R190 R192-193 R195 R201 R215
40 0024981001 RES CF 1/4W 5% 10k LL R10 R14-15 R24 R26 R30 R36 R42 R46 R55-57 R61 R88
R92-93 R97 R112 R120 R125-126 R129 R131 R135-136
R142 R143 R148 R152-154 R165 R170 R173 R175
R184-185 R194 R200 R206
7 0025084001 RES CF 1/4W 5% 10M LL R16 R31 R43-44 R50 R90 R118
2 0024937001 RES CF 1/4W 5% 10ohm LL R102 R130
1 0024983001 RES CF 1/4W 5% 12k LL R28
1 0028955001 RES CF 1/4W 5% 130k LL R60
1 0029539001 RES CF 1/4W 5% 13k LL R114
1 0024999001 RES CF 1/4W 5% 150k LL R33
5 0024954001 RES CF 1/4W 5% 150ohm LL R11-12 R83 R99 R116
4 0024985001 RES CF 1/4W 5% 15k LL R82 R94 R110 R115
1 0025058001 RES CF 1/4W 5% 180k LL R47
3 0024986001 RES CF 1/4W 5% 18k LL R3 R9 R157
2 0024965001 RES CF 1/4W 5% 1k LL R105 R146
12 0025069001 RES CF 1/4W 5% 1M LL R23 R34 R65 R67 R91 R133 R140-141 R145 R147 R151 R156
3 0024971001 RES CF 1/4W 5% 2.2k LL R86 R95 R119
2 0029455001 RES CF 1/4W 5% 2.4k LL R4 R8
2 0029006001 RES CF 1/4W 5% 20k LL R84 R100
11 0025059001 RES CF 1/4W 5% 220k LL R41 R52 R59 R108 R124 R127 R134 R138 R160 R163-164
12 0024956001 RES CF 1/4W 5% 220ohm LL R87 R121 R128 R139 R149 R155 R166-167 R196 R204 R208-
209
2 0024987001 RES CF 1/4W 5% 22k LL R20 R32
1 0029450001 RES CF 1/4W 5% 240k LL R39
1 0025060001 RES CF 1/4W 5% 270k LL R58
7 0024988001 RES CF 1/4W 5% 27k LL R37 R96 R98 R312 R317 R412 R417
8 0029005001 RES CF 1/4W 5% 2k LL R29 R51 R199 R211 R301 R308 R401 R408
2 0024973001 RES CF 1/4W 5% 3.3k LL R7 R212
2 0025077001 RES CF 1/4W 5% 3.3M LL R53-54
3 0024975001 RES CF 1/4W 5% 3.9k LL R103 R311 R411
4 0028016001 RES CF 1/4W 5% 300k LL R72-73 R75 R77
1 0024959001 RES CF 1/4W 5% 330ohm LL R210
2 0024945001 RES CF 1/4W 5% 33ohm LL R315 R415
1 0029341001 RES CF 1/4W 5% 360ohm LL R109
1 0025063001 RES CF 1/4W 5% 390k LL R38
2 0024991001 RES CF 1/4W 5% 39k LL R6 R13
2 0029610001 RES CF 1/4W 5% 3k LL R313 R413
1 0029472001 RES CF 1/4W 5% 4.3k LL R85
5 0024977001 RES CF 1/4W 5% 4.7k LL R78-79 R158 R305 R405
2 0025065001 RES CF 1/4W 5% 470k LL R107 R111
1 0024993001 RES CF 1/4W 5% 47k LL R159
5 0024947001 RES CF 1/4W 5% 47ohm LL R216 R304 R307 R404 R407
4 0024962001 RES CF 1/4W 5% 560ohm LL R132 R161 R169 R205
4 0024994001 RES CF 1/4W 5% 56k LL R64 R113 R302 R402
1 0024979001 RES CF 1/4W 5% 6.8k LL R101
1 0026507001 RES CF 1/4W 5% 62k LL R66
1 0028153001 RES CF 1/4W 5% 75k LL R5
2 0029613001 RES CF 1/4W 5% 91k LL R74 R76
8 0054208001 RES MF FUSE 1/4W 5% 470ohm R303 R306 R309-310 R403 R406 R409-410
4 0027349001 RES FILM 1W 5% 10k LL R197-198 R202-203

CYBER-TWIN Service Manual
PRINTED CIRCUIT BOARD ASSEMBLY – MAIN (cont)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
2 0027627001 RES FILM 1W 5% 10ohm LL R189 R191
1 0028030001 RES FILM 1W 5% 680ohm LL R68
4 0015718001 RES MF 1/4W 1% 1.00k LL R322-323 R422-423
2 0027632001 RES MF 1/4W 1% 2.43k LL R314 R414
2 0016946001 RES MF 1/4W 1% 825ohm LL R316 R416
4 0055932001 RES MOX 2W 5% .15ohm LL R325-326 R425-426
1 0041268001 RES MOX 2W 5% 10k LL R207
4 0051417001 RES MOX 2W 5% 22ohm LL R69-70 R327 R427
6 0051040001 RES MOX FP 1/4W 5% 47ohm LL R318-319 R324 R418-419 R424
2 0050814000 RES WW BT 5W 10% .15ohm R328 R428
1 0028503000 THERMISTOR 10 ohm 5A C60-11 RT1
2 0056312000 TUBE SOCKET 9 PIN PCB W/COLLAR V1-2
1 0056329000 XFMR SPDIF T1
1 0014689003 XSTR N-CH JFET J111 TO-92 Q17
11 0041465003 XSTR N-CH JFET J113 TO-92 Q1-3 Q5-6 Q9 Q13-16 Q19
6 0016739003 XSTR NPN 2N4401 TO-92 Q4 Q12 Q21-22 Q308 Q408
10 0025751003 XSTR NPN 2SC2362K/2SC2389STPS Q7-8 Q10-11 Q301-303 Q401-403
2 0054418000 XSTR NPN 2SC3263 MT-100 Q312 Q412
2 0028760000 XSTR NPN 2SC4793/2SC3298B Q310 Q410
2 0051448003 XSTR NPN 2SD1857 Q306 Q406
2 0014867003 XSTR NPN MPSW42 TO-226AE Q307 Q407
4 0016742003 XSTR PNP 2N4403 TO-92 Q18 Q20 Q309 Q409
2 0025752003 XSTR PNP 2SA1038STPS Q304 Q404
2 0054417000 XSTR PNP 2SA1294 MT-100 Q313 Q413
2 0028759000 XSTR PNP 2SA1306A TO-220P Q311 Q411
2 0014866003 XSTR PNP MPSW92 TO-226AE Q305 Q405
4 0040903000 INSULATOR MICA TO-218 @ Q305 Q405 Q312 Q412
10 0027638000 SCRW TF 4-40x3/8 HWHS ZI .1”HD @ Q305 Q405 Q310-312 Q410-412 U30 U32
8 0032937000 WSHR CONE @ Q305 Q405 Q310-312 Q410-412
10056865000 WIRE SET PCB CYBER-TWIN WJ1 to WJ2 (WIRESET ON MD 0056549000)
10055765000 PCB FAB CYBER-TWIN MAIN
REF 0025936000 STANDOFF NYL PCB SNAP 3/8” NAT ST1-22
REF 0055766000 SVC DIAG COMB CYBER-TWIN MAIN
PRINTED CIRCUIT BOARD ASSEMBLY – HOST
QTY PART # DESCRIPTION REFERENCE DESIGNATION
7 0053556004 CAP 0805 CER .01uF 16V 5% C33-34 C37-39 C46 C51
40 0053554004 CAP 0805 CER .1uF 16V 5% C2 C6-7 C11 C14 C17 C19 C23 C25-32 C35-36 C40-41 C43
C45 C47 C50 C52-55 C57 C62-64 C66 C69-71 C73 C75 C79
C83
4 0055951004 CAP 0805 CER .0022uF 25V 5% C56 C67 C80 C90
1 0055952004 CAP 0805 CER .0047uF 25V 5% C44
3 0055953004 CAP 0805 CER .33uF 25V 5% C16 C48 C78
1 0055954004 CAP 0805 CER .47uF 15V 5% C42
6 0055955004 CAP 0805 CER 330pF 25V NPO 5% C96 C98-99 C103-105
13 0055956004 CAP 0805 CER 33pF 25V 5% C1 C3 C5 C8-10 C12-13 C15 C18 C21-22 C24
3 0055957004 CAP 0805 CER 820pF 25V NPO 5% C100-102
12 0056448004 CAP 1206 CER .1uF 50V 5% C59-60 C72 C81-82 C86 C91 C94-95 C97 C106-107
2 0053560004 CAP 3528 TAN 4.7uF 15V 20% C74 C77
14 0053561004 CAP 3528 TAN 10uF 15V 20% C4 C20 C49 C61 C65 C68 C76 C84-85 C87-89 C92-93
1 0027419000 HDR .1 CTR 10 CKT SQ PIN P6B
2 0027416000 HDR .1 CTR 8 CKT SQ PIN P1B P2B