Ibanez FL9 Flanger User manual

Service Guide
FL9
Flanger

The Ibanez FL9 Flanger Service Guide was compiled from a collection of original and
obsolete information to create a useful guide for maintaining this unique guitar pedal.
Credit must be given to the authors of the original 1980s era Service Manual NO. 002 that
was used as a template for this updated guide.
November 26, 2022, Cedar Grove Studios
FL9 Flanger Service Guide
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Block Diagram
FL9 Flanger Service Guide
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Adjustment Procedures
CLOCK
1. Set SPEED, REGEN, WITDH, and DELAY TIME controls fully counter-clockwise (CCW).
2. Connect an oscilloscope to test point CP1.
3. Adjust VR101 CLOCK TRIM for a frequency of 40kHz.
4. Set DELAY TIME control fully clockwise (CW) and check CP1 frequency. Should be in the
range of 500kHz to 600kHz.
5. Set WIDTH control fully CW and check CP1 frequency sweep. The range should be from
40kHz to 500kHz-600kHz.
BIAS
1. Set REGEN and WIDTH controls fully CCW.
2. Connect a +5dBm to +10dBm (2.5 volt) 440Hz sine wave to the INPUT.
3. View the waveform on test point CP12. Adjust VR102 BIAS to achieve a symmetrically-
clipped waveform.
REGEN
1. Set SPEED, REGEN, and WIDTH controls fully CW.
2. Connect an oscilloscope to the OUTPUT with no INPUT signal
3. Adjust VR103 REGENERATION TRIM until oscillation is seen. Back down VR103
REGENERATION TRIM about 10 degrees to squelch the oscillation.
FL9 Flanger Service Guide
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40kHz 5-volt peak
550kHz 5-volt peak
440Hz 1-volt peak

Test (Control) Points
FL9 Flanger Service Guide
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Test Point Signals and Voltages
FL9 Flanger Service Guide
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Printed Circuit Board
(Top View) (Bottom View)
FL9 Flanger Service Guide
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Schematic Diagram
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1 2 3 4 5 6 7 1 2 3 4 5 6 7
A B C D
A B C D
Date: 2022-11-29
KiCad E.D.A. kicad (6.0.0-0)
Rev: 1.0.0Size: USLegal Id: 1/1
Title: Ibanez_FL-9_Flanger_Pedal MP-FL0601 File: Ibanez_FL-9.kicad_sch Sheet: / Cedar Grove Studios MP-FL0601
+5V
GND
R151 150K
R153 200K
1
2
3
RV101
20K
GND
R146
33K
R152 220K
GND
R126
51K
GND GNDGND
R127
91K
R128
18K
+5V+9V
R163
10K
C135
47uf/6.3v
R164
10K
GND
1
-
2
+
3IC101A
TL022
C118
100pf CER
VO 1
GND
2
VI
3
IC106
LM78L05_TO92
C133
100uf/16v
C117
1uf/50
C134
100uf/10v
C116
0.22uf/50v
2SC1583F
B1 1
C1 2
E
3
C2 4
B2 5
Q108
2SC1583F
BT1
9V Battery
JP15
RED
JP16
Y-GR
R129
91K
R160 110K
C119
0.004 FILM
JP8
S-BL
JP4
RED
JP9
RED
C122
1000pf CER
D104
1N4148
1
2
3
RV3
50K
D1
LN21CPSL
JP12
PINK
C123
1000pf CER
JP10
BLK
GND
+5V
R161 100K
1
23
Q109
2SC2458GR
1
23
Q105
2SC2458GR
R143
1M
R162 270K R165
4.7K
1 2 3
J3
EXT_DC
D106
W05C
1
23
Q104
2SC2458GR
D107
1N4148
GND
GND
R137
56K
GND
R136
56K
R118
18K
C112
0.001uf FILM
R117
18K
GND
C124
1000pf CER
GND
R142
100
R119
18K
C110
1uf/50
1
-
2
+
3IC102A
TL022
R135
10K
0.001uf
100K CR_N01
1 2
CR1
CR_N01
R144
2.2K
GND
D105
RD5.1EB
1
23
Q106
2SC2458GR
GND
V-
4V+ 8
U101C
TL022
R145
330
+9V
R134
10K
0.001uf
100K CR_N01
1 2
CR2
CR_N01
V-
4V+ 8
U102C
TL022
V-
4V+ 8
U103C
TL022
+9V
C121
0.047uf FILM
R133
1M
+5V
1
2
3
RV4
10K
+5V
JP5
BLU
+9V
BRIGADE
BUCKET
DELAY
MN3207
GND 1
CP1
2
IN
3
VGG
4VDD 5
CP2
6
OUT1 7 OUT2 8
IC104
MN3207
C125
1uf/50v
C126
20pf CER
+5V
C111
0.0015uf FILM
CLOCK GEN
MN3102 VDD 1
CP1 2
GND 3
CP2 4
OX3
5
OX2
6
OX1
7VGG 8
IC105
MN3102
GND GND
GND
D103
1N4148
+5V
R116
56K
GND
R120
10K
12
3
Q107
2SA1048Y/GR
R124 100K
1
2
3
Q103
2SK44SPC
R113 100K
C127
5pf CER
R148
10K
C114
560pf CER
GND GND
R147
27K
GND GND
R122
13K
R121
13K
C113
0.003uf FILM
+5V
GND
+5V
R123
10K
GND R114
5.1K
C108
0.033uf FILM
1
23
Q102
2SC2458GR
C115
1uf/50
1
23
Q101
2SC2458GR
GND
JP1
GRY
GND
C120
10uf/16v
R115
5.1K
R131
470
C109
1uf/50v
1
2
3
RV102
10K
R150
2.2M
1
-
2
+
3
IC103A
TL022
JP3
WHT
GND
R132 100K
R149
9.1K
C128
22uf/10v TAN
R155
62K
C129
0.01uf FILM
R130
10K
C130
47uf/10v
R125 100K
R154 100K
R156
51K
R
S
T
J1
INPUT
C105
0.004uf FILM
S
TJ2
OUTPUT
GND
JP2
YEL
GND
JP13
GRN
R102 510K
GND
R140
22K
R141
22
C101
0.047uf FILM
R101
1K
+
5
-
6
7
IC101B
TL022
R107 100K
C102
100pf CER
GND
SW1
NORMAL/EFFECT
JP11
W/R
R103
91K
R104
18K
R106 510K
C104
0.047uf FILM
+9V
R108
10K
R105 180K
R139
62K
R138
1M
R112
10K
C106
0.01uf FILM
R111
12K
C107
120pf CER
1
2
3
RV2
100K
JP14
ORA
JP6
PUR
R109
47K
D102
1N4148
1
2
3
RV103
100K
C103
0.022uf FILM
D101
1N4148
+
5
-
6
7
IC103B
TL022
C131
47uf/10v
R110
12K
+5V
R157
1.2K
+
5
-
6
7
IC102B
TL022
JP7
BRN
R159
10K
GND
1
2
3
RV1
500K
GND
C132
47uf/6.3v
R158
10K
CP15
4.5v
4.5v
4.5v
CP4
CP13
CP10
4.5v
CP3
4.5v
CP2
CP8
4.5v
4.5v CP6
CP12
CP11
4.5v
CP5
4.5v
4.5v
CP9
CP1
CP14
CP7
REGENERATION
ACTIVE BYPASS SWITCH
LOW-PASS -24dB/OCT
BATTERY CHECKER
-> BUFFERED INPUT SIGNAL
MIXER AND CLAMPER
REGENERATION TRIM
LOW-PASS -12dB/OCT
<- REGENERATION SIGNAL
SWITCHING DRIVER
DELAY TIME
C116 upgraded to FILM 2022-11-26
BIAS TRIM
MIXER AND DE-EMPHASIS
VIRTUAL GROUND
WIDTH
<- DELAY_BIAS (0.6V to 5V)
-> SWEEP_WAVE + DELAY_BIAS
<- SWEEP_WAVE (0.6V to 5V)
SPEED
POWER: VOLTAGE REGULATION
INPUT
BUCKET BRIGADE DELAY
OUTPUT
LOW FREQUENCY OSCILLATOR
CLOCK TRIM
NORMAL/EFFECT
PRE-EMPHASIS
CLOCK VCO AND DRIVER
as-built: 0.02uf FILM

Parts List
FL9 Flanger Service Guide
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Troubleshooting
FL9 Flanger Service Guide
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