Roland BOSS Chromatic Tuner TU-3 Operating and maintenance manual

SERVICE NOTES
Issued by RJA
Copyright © 2009 Roland Corporation
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of Roland Corporation.
CC-KWS17058650E0
TU-3Dec. 2009
Table of Contents
Cautionary Notes ..............................................................2
Specifications .....................................................................2
Location of Controls .........................................................3
Location of Controls Parts List........................................3
Exploded View ..................................................................4
Exploded View Parts List.................................................5
Parts List .............................................................................6
Verifying the Version Numbers......................................8
Data Backup and Restore Operations ............................8
Performing a Factory Reset..............................................8
Updating the System ........................................................8
Test Mode ...........................................................................9
Circuit Board (Panel, Analog, Input, Output, SW
Board)................................................................................14
Circuit Diagram (Panel Board)......................................16
Circuit Diagram (Analog, Input, Output, SW
Board)................................................................................18

2
TU-3Dec. 2009
Cautionary Notes
Before beginning the procedure, please read
through this document. The matters described may
differ according to the model.
User Data Cannot Be Saved
This product cannot save user data. Refer to “Data Backup and Restore
Operations” (p. 8) and note down the information on paper as required.
Part Replacement
When replacing components near the power-supply circuit or a heat-
generating circuit (such as a circuit provided with a heat sink or including a
cement resistor), carry out the procedure according to the instructions with
respect to the part number, direction, and attachment position (mounting so as
to leave an air gap between the component and the circuit board, etc.).
Parts List
A component whose part code is ******** will not be supplied as a service part
because one of the following reasons applies.
• Because it is supplied as an assembled part (under a different part code).
• Because a number of circuit boards are grouped together and supplied as
a single circuit board (under a different part code).
• Because supply is prohibited due to copyright restrictions.
• Because reissuance is restricted.
• Because the part is made to order (at current market price).
• Because it is carried in electronic data on the Roland web site.
• Because it is a package or an accessory irrelevant to the function
maintenance of the main body.
• Because it can be replaced with an article on the market. (battery or etc.)
Circuit Diagram
In the circuit diagram, “NIU” is an abbreviation for “Not in Use,” and
“UnPop” is an abbreviation for “Unpopulated.” They both mean non-mounted
components. The circuit board and circuit board diagram show silk-screened
indications, but no components are mounted.
Specifications
TU-3: Chromatic Tuner
Tuning Range
C0 (16.35Hz)–C8 (4186Hz)
Reference Pitch
A4=436–445 Hz (1Hz step)
Tuning Accuracy
±1 cent
Power Supply
DC 9 V: Dry battery 6F22 (9 V) type (carbon),
Dry battery 6LR61 (9 V) type (alkaline),
AC Adaptor (PSA series: optional)
Current Draw
30 mA (DC 9 V)
85 mA (DC 9 V, when High Brightness mode is on)
Dimensions
73 (W) x 129 (D) x 59 (H) mm
2-7/8 (W) x 5-1/8 (D) x 2-3/8 (H) inches
Weight
390 g / 14 oz (including battery)
Accessories
Owner’s Manual (#5100007386)
Leaflet (“USING THE UNIT SAFELY,””IMPORTANT NOTES,” and
“Information”) (#********)
Dry battery/9 V type (6F22) (#********)
Options
AC adaptor: PSA series
Parallel DC cord: PCS-20A
* Duration of continuous use with battery operation: These figures will vary
depending on the actual conditions of use.
* The battery that was supplied with the unit is for temporary use, intended
primarily for testing the unit’s operation.
* Printed matters will not be supplied after the end of the production. Then,
download the electronic file from the Roland web site.
* In the interest of product improvement, the specifications and/or appearance of
this unit are subject to change without prior notice.
Battery
When the tuner is
continuously on
When the tuner is on
for one minute and off
for three minutes
When High
Brightness
mode is off
When High
Brightness
mode is on
When High
Brightness
mode is off
When High
Brightness
mode is on
Carbon 5.5 hours 0.5 hours 12 hours 2 hours
Alkaline 14 hours 3 hours 23.5 hours 11 hours

3
TU-3Dec. 2009
Location of Controls
fig.Panel.eps
Location of Controls Parts List
7
12
11
1
6
9
4
5
10
3 2
8
No. Part Code Part Name Description Q’ty
1 5100008544 CASE 1
2 5100008548 DISPLAY COVER 1
3 5100009104 LED KPTL-3216SYCK 2
4 5100008546 ESCUTCHEON 1
5 5100006345 LED KCSA04-104 1
6 01903234 6.5MM JACK HTJ-064-13D 1
5100003918 JACK NUT M9X12X2 NI RTC(H5039510R0) 1
5100003926 WASHER 9X13.5X0.5T NI(H5039158R0) 1
7 5100001342 6.5MM JACK HTJ-064-12IMP (13449155R1) 2
5100003918 JACK NUT M9X12X2 NI RTC(H5039510R0) 2
5100003926 WASHER 9X13.5X0.5T NI(H5039158R0) 2
8 5100007512 THUMB SCREW (H5029820R0) 1
9 5100008545 PEDAL 1
10 5100008294 PEDAL PLATE (22357304R0) 1
11 5100007408 LED (F5339532R0) 19-226SURSYGC/S530-A3/E2/TR8 1
12 5100007410 LED (F5339534R0) 19-21/R6C-AL2N1VY/3T 21

4
TU-3Dec. 2009
Exploded View
fig.bunkaizu.eps
1 ±0.5
MAX2 MAX2
MAX 0.30˚
12
13
21
21
22
22
22
23
20-2
20-1
15
14
10
11
16 17
19
18
9
7
1
2
1
2
87
3
5
4
46
24
25
26
28
27

5
TU-3Dec. 2009
Exploded View Parts List
No. Part Code Part Name Description Q’ty
1 5100008544 CASE 1
2 5100008545 PEDAL 1
3 5100008546 ESCUTCHEON 1
4 5100008547 HOLDER 1
5 5100008548 DISPLAY COVER 1
6 5100008549 SHIELD COVER 1
7 5100008238 PSA CAUTION (G2537401R0) 1
8 5100007504 COIL SPRING (22177109R0) 1
9 5100007505 PEDAL GUIDE BUSH (22157702R0) 1
10 5100008294 PEDAL PLATE (22357304R0) 1
11 5100007503 BATTERY CUSHION (22267333R0) 1
12 5100006632 BOTTOM COVER (22027851R0) 1
13 5100006633 BOTTOM FOOT (22357305R0) 1
14 5100006631 CAUTION SEAL PSA (FCC/EMI)(G2537516R2) 1
15 ******** LABEL SERIAL 5X25 SIL/BLK RTC 1
16 5100008092 PLAIN WASHER 3X6X0.5 RESIN RTC(H5039708R0) 2
17 40010267 BINDING SCREW M3X10 FE BZC 2
18 5100007512 THUMB SCREW (H5029820R0) 1
19 5100008240 SCREW 3X12 (H5029842R0) HEXSOCKET TAPTITE P BZC 4
20-1 5100007965 SCREW 3X6(H5029325R0) PAN TAPPING B1 BZC 4
20-2 5100007965 SCREW 3X6(H5029325R0) PAN TAPPING B1 BZC 1
21 5100003918 JACK NUT M9X12X2 NI RTC(H5039510R0) 3
22 5100003926 WASHER 9X13.5X0.5T NI(H5039158R0) 3
23 5100008086 INT TOOTH WASHER 9.5X12.5X0.5 NI RTC(H5039205R0) 2
5100005959 PANEL SHEET ASSY
* This unit includes the following parts.
24 ******** PANEL BOARD ASSY 1
25 ******** ANALOG BOARD ASSY 1
26 ******** INPUT BOARD ASSY 1
27 ******** OUTPUT BOARD ASSY 1
28 ******** SW BOARD ASSY 1

6
TU-3Dec. 2009
Parts List
fig.-part1-e.eps
SAFETY PRECAUTIONS:
The parts marked have
safety-related characteristics. Use
only listed parts for replacement.
NOTE: The parts marked # are new. (initial parts)
Due to one or more of the following reasons,
parts with parts code ******** cannot be supplied as service parts.
• Part supplied only as a component in a complete assembly
• Copyright does not permit the part to be supplied
• Part is sold commercially
The description "Q'TY" means a necessary number of the parts per one product.
CASING
5100006632 BOTTOM COVER (22027851R0) 1
# 5100008544 CASE 1
# 5100008545 PEDAL 1
# 5100008546 ESCUTCHEON 1
# 5100008548 DISPLAY COVER 1
CHASSIS
# 5100008294 PEDAL PLATE (22357304R0) 1
# 5100008547 HOLDER 1
# 5100008549 SHIELD COVER 1
SWITCH
# 5100006349 SWITCH EVQP6DB35 2
13129710R0 SWITCH(PUSH) JM-0404 1
JACK, EXT TERMINAL
04908701 ADAPTOR JACK KM02018ABM1P 2
01903234 6.5MM JACK HTJ-064-13D 1
5100001342 6.5MM JACK HTJ-064-12IMP (13449155R1) 2
PWB ASSY
# 5100005959 PANEL SHEET ASSY 1
* This unit includes the following parts.
******** PANEL BOARD ASSY 1
******** ANALOG BOARD ASSY 1
******** INPUT BOARD ASSY 1
******** OUTPUT BOARD ASSY 1
******** SW BOARD ASSY 1
DIODE
# 5100006345 LED KCSA04-104 1
# 5100009104 LED KPTL-3216SYCK 2
5100007408 LED (F5339532R0) 19-226SURSYGC/S530-A3/E2/TR8 1
5100007410 LED (F5339534R0) 19-21/R6C-AL2N1VY/3T 21
CONNECTOR
5100007872 BATTERY CONNECTOR 006P BATTERY SNAP (F3419102R0 1
SCREWS
40010267 SCREW M3X10 BINDING MACHINE FE BZC 2
5100007965 SCREW 3X6 (H5029325R0) PAN TAPPING B1 BZC 5
# 5100008240 SCREW 3X12 (H5029842R0) HEXSOCKET TAPTITE P BZC 4
5100007512 THUMB SCREW (H5029820R0) 1
5100003918 JACK NUT M9X12X2 NI RTC(H5039510R0) 3
5100008092 PLAIN WASHER 3X6X0.5 RESIN RTC(H5039708R0) 2
5100003926 PLAIN WASHER 9X13.5X0.5T NI(H5039158R0) 3
5100008086 INT TOOTH WASHER
9.5X12.5X0.5
NI RTC(H5039205R0) 2

7
TU-3Dec. 2009
MISCELLANEOUS
40016512 INSULOK TIE 80M/M T-18S 1
5100006633 BOTTOM FOOT (22357305R0) 1
5100007504 COIL SPRING (22177109R0) 1
5100007505 PEDAL GUIDE BUSH (22157702R0) 1
# 5100010361 BATTERY SNAP 1
5100007503 BATTERY CUSHION (22267333R0) 1
5100006631 CAUTION SEAL PSA (FCC/EMI)(G2537516R2) 1
# 5100008238 PSA CAUTION (G2537401R0) 1
ACCESSORIES (Standard)
# 5100007386 OWNER’S MANUAL JAPANESE/ENGLISH 1

8
TU-3Dec. 2009
Verifying the Version
Numbers
Verify the version number in the Test Mode (p. 9).
Data Backup and Restore
Operations
On the TU-3, the following settings remain in memory even after the power is
switched off. Executing a factory reset returns these settings to their factory
defaults. Before performing servicing or testing, note down user setting values
on paper.
For information on how to verify user-setting values and how to change
settings, refer to the owner’s manual.
Performing a Factory Reset
Executing a factory reset returns the settings described earlier to their factory
defaults. Before executing this, note down the values on paper.
1. Hold down the MODE button and switch on the power (by inserting a
plug into the INPUT jack).
The green light at the center of the meter lights up.
2. Within approximately 3 seconds, press the MODE button again.
The green light at the center of the meter flashes three times, the factory-
default settings are restored, and the unit returns to its normal mode.
* If several seconds elapse without the MODE button being pressed, or if any
button other than the MODE button is pressed, the unit changes to its normal
mode without restoring the factory-default settings.
Updating the System
If a system update is required, replace the circuit board with an updated one.
Saved setting Obtainable setting values
Tuning-mode settings Chromatic, Chromatic Flat,
Guitar, Guitar Flat, Bass, Bass Flat
Reference-pitch setting 436 through 445 Hz
Meter display-pattern setting CENT, STREAM
Accu-Pitch sign function on/off setting On, Off

9
TU-3Dec. 2009
Test Mode
Items Required
• Signal generator
• Oscilloscope
• Noise meter (e.g., NF M2177)
• Tester
• 47-kΩdummy plug x 1
• Amp-equipped monitor speaker
• Computer (running Windows XP)
• WAV data (the following three files—obtained via Service Net)
1C0_JUST.WAV
2A4_JUST.WAV
3C8_just.WAV
• Attenuator tool x 1
fig.test-Attenuator-e.eps
Preliminary Preparations
1. Connect the respective pieces of equipment as shown below.
fig.test-jyunbi-e.eps
2. On the computer, use Windows Media Player to play 2A4_JUST.WAV, and adjust the output level so that the noise meter
displays a value of -60 dBu.
Entering the Test Mode
1. Referring to the figure below, connect the equipment at all points except the INPUT jack.
fig.test-Connect-e.eps
2. Hold down the MODE and STREAM/CENT buttons and insert the plug into the INPUT jack.
Quitting the Test Mode
Disconnect the plug from the INPUT jack.
* Because disconnecting the plug from the INPUT jack while testing is in progress switches off the power, interposing a switching tool
between the INPUT jack and the plug can facilitate operations.
Attenuator-tool circuit diagram
Attenuator
tool
Noise Meter
(DIN-AUDIO)
Oscilloscope Monitor Amp (CM-30)
200Hz
1Vp-p
Square
1KHz
0dBu
Sine
47k
Short Plug
PSA
* Switch as required by testing.
* Switch as required
by testing.
* Switch as required
by testing.
Attenuator
tool
(-50 dB)
Oscillator
Voltmeter Ammeter

10
TU-3Dec. 2009
Test Items
1. Version Check, EEPROM Check, and Switch Check (p. 10)
2. LED and Current-consumption Check (p. 10)
3. OUTPUT Check (p. 11)
4. TUNER Operation Check (p. 11)
5. Noise Check (p. 12)
6. DC OUT Check (p. 12)
7. Battery Operation Check (p. 12)
1. Version Check, EEPROM Check, and
Switch Check
This item combines both the version check and the check of STREAM/CENT
and MODE switch operation.
For the version, performing the operation described below makes the digits of
the version number appear in sequence. The screens shown below display
version 1.00.
1. Hold down the MODE and STREAM/CENT buttons and insert the plug
into the INPUT jack.
The value of the integer portion of the version number appears on the
seven-segment LED display.
fig.test-1-1.eps
* A check of the EEPROM is carried out automatically at this time. If a problem is
found in the EEPROM, Eappears on the seven-segment LED display.
2. Within 2 seconds after the operation in step 1, press the MODE switch.
The value of the version number’s first digit to the right of the decimal
point appears on the seven-segment LED display.
fig.test-1-0.eps
3. Press the STREAM/CENT button.
The value of the version number’s second digit to the right of the decimal
point appears on the seven-segment LED display.
fig.test-1-0.eps
4. Depress the pedal to advance to the next test.
2. LED and Current-consumption Check
1. Verify that the connections and signal input are as shown below.
INPUT: 200 Hz, 1.0 Vp-p, rectangular wave
OUTPUT: Oscilloscope (channel 1)
BYPASS: Oscilloscope (channel 2)
Oscilloscope settings: 0.5 V/div., 1.0 ms/div., coupling DC
2. The LEDs on the panel light up or flash as shown below. Verify that no
locations remain dark.
•CHECK LED: Flashing
• Meter LEDs (red/green): The LEDs light up in sequence from left to
right, then the center LED lights up green.
(This is repeated.)
• Guide LEDs ( and ; yellow): The left and right LEDs light up
in alternation
• 7-segment LED display: The segments light up clockwise, with the dot
at bottom right lighting up last.
fig.test-2-1.eps
3. Depress the pedal.
An LED pattern for verifying current consumption is displayed.
fig.test-2-2.eps
4. Verify that the current-consumption value is 76 mA or less.
5. Depress the pedal.
All LEDs light up, alternating between high and low brightness.
fig.test-2-3.eps
6. Verify that the brightness changes and that no locations remain dark.
This completes the testing in the Test Mode.
7. Depress the pedal.
Execution changes to the normal mode. Immediately go on to the test
items on the next page.
If the unit is powered down at this point, then when restarting it, start up
in the normal mode.

11
TU-3Dec. 2009
3. OUTPUT Check
1. Verify that the connections and signal input are as shown below.
INPUT: 200 Hz, 1.0 Vp-p, rectangular wave
OUTPUT: Oscilloscope (channel 1)
BYPASS: Oscilloscope (channel 2)
Oscilloscope settings: 0.5 V/div., 1.0 ms/div., coupling DC
2. Verify that the CHECK LED has gone dark.
fig.test-3-1.eps
3. Verify that signals like the following are output.
OUTPUT: 1.0+/-0.1 Vp-p
BYPASS: 1.0+/-0.1 Vp-p
fig.test-3-2.eps
4. Depress the pedal and verify that the CHECK LED lights up.
fig.test-3-3.eps
5. Verify that signal output stops for OUTPUT only.
fig.test-3-4.eps
6. Change the connections and signal input as shown below.
INPUT: 1 kHz, 0 dBu, sine wave
OUTPUT: Noise meter (DIN audio)
BYPASS: N/A
7. Verify that the noise-meter value (OUTPUT mute level) is -90 dBu or
less.
4. TUNER Operation Check
1. Depress the pedal and verify that the CHECK LED lights up.
2. Press the MODE button several times to make CHROMATIC light up.
3. Connect audio output from the computer to the INPUT jack via the
attenuator tool.
4. Play 1C0_JUST.WAV on the computer.
A 16.352-Hz sine wave at -50 dBu is input to the INPUT jack.
5. Verify that the center light of the LED meter lights up and Cappears on
the seven-segment LED display.
fig.test-4-1.eps
6. Play 2A4_JUST.WAV on the computer.
A 440.00-Hz sine wave at -60 dBu is input to the INPUT jack.
7. Verify that the center light of the LED meter lights up and Aappears on
the seven-segment LED display.
fig.test-4-2.eps
8. Play 3C8_just.WAV on the computer.
A 4,186-Hz sine wave at -60 dBu is input to the INPUT jack.

12
TU-3Dec. 2009
9. Verify that the center light of the LED meter lights up and Cappears on
the seven-segment LED display.
fig.test-4-3.eps
10. Depress the pedal and verify that the CHECK LED goes dark.
5. Noise Check
1. Change the connections as shown below.
INPUT: 47-kΩdummy plug
(Connect this directly to the INPUT jack.)
OUTPUT: Noise meter (DIN audio)
BYPASS: Noise meter (DIN audio)
2. Depress the pedal to switch on the tuner, then verify the residual noise.
BYPASS: -102 dBu or less
OUTPUT: -106 dBu or less
3. Change the connections as shown below.
INPUT: 47-kΩdummy plug
(Connect this directly to the INPUT jack.)
OUTPUT: Monitor amp
BYPASS: Monitor amp
4. Depress the pedal several times and verify that no switching noise occurs.
6. DC OUT Check
1. Change the connections as shown below.
INPUT: Computer output
OUTPUT: N/A
BYPASS: N/A
2. Connect an AC adaptor (PSA-series device) directly to DC IN.
3. Verify the following.
• Voltage at DC OUT is 8.5 V or higher.
• The product is in operation.
7. Battery Operation Check
1. Disconnect the AC adaptor.
2. Insert a battery into the battery compartment, then insert a plug into the
INPUT jack.
3. Verify that the CHECK LED lights up.
* If the lighted CHECK LED is not bright, try using a fresh battery.

13
TU-3Dec. 2009

14
TU-3Dec. 2009
Circuit Board (Panel, Analog, Input, Output, SW Board)
fig.b-Panel-1.eps

15
TU-3Dec. 2009
fig.b-Panel-2.eps

16
TU-3Dec. 2009
Circuit Diagram (Panel Board)
fig.d-Panel.eps@L
D+5.0
DGND
D+5.0
DGND
D+5.0
DGND
DGND
POWER-AD
D+5.0
DGND
DGND
DGND
D+5.0
DGND
DGND
DGND
D+5.0
DGND
DGND
D+5.0
DGND
DGND
DGND
DGND
DGND
D+5.0
D+2.8
D+5.0
DGND
RESET-OUT
DGND
POWER-AD
LED(23)
LED(5)
LED(6)
LED(10)
LED(11)
LED(13)
LED(14)
LED(9)
LED(8)
LED(7)
LED(24)
DGND
D+5.0
DGND
D+5.0
DGND
10uFC8
0.1uF
C13
TP64
TP60
T
P
T
P
C28
UnPop
T
10000pF
C24
0.1uF
C20
X1
1
2
4
3
R10
0
CN1
WIRING RIBBON 10P/AWG26/P2.0
3
2
1
4
9
8
7
6
5
10
0.1uF
C17
0.1uF
C16
10uF
C4
D ( 0.5% )
10k
R14
EVQP6DB35
SW1
1
23
4
1k
R16
1SS362FV(TPL3)
D1
2
3
1
TP8
10k
R18
TP12
680k
R24
TP16
TP20
100k
R28
TP36
100k
R26
10k
R22
0.1uF
C21
0.1uFC23
C19
UnPop
C25
UnPop
IC1
AK2923H-E2
57
6
10uFC5
100k
R27
C27
UnPop
TP67
TP73
0.1uF
C14
10000pF
C29
10k
R20
10000pF
C26
47k
R8
0.1
u
C18
R9
0
D ( 0.5% )
10k
R13
10uFC10
TP95
TP96
EVQP6DB35
SW2
1
23
4
TP83
1k
R15
10k
R21
C2
10uF
IC1
AK2923H-E2
31
2
1k
R17
10k
R19
100k
R25
TP59
TP98
TP99
TP100
TP101
TP102
TP103
TP104
E
EXB28V821JX
EXB28V821JX
RA5
18
6
54
3
27
EXB28V821JX
RA1
18
6
54
3
27
EXB28V821JX
RA3
18
6
54
3
27
0.47uF
C33
10uF
C34
D ( 0.5% )
10k
R36
D ( 0.5% )
10k
R35 27k
R6
C30
C31
R
3
R3
MB95F108ANSPMC
IC2
21 _RST
14 X0
15 X1
20 PG1/X0A
19 PG2/X1A
30 P10/UI0
31 P11/UO0
32 P12/UCK0
33 P13/TRG0/ADTG
34 P14/PPG0
35 P20/PPG00
36 P21/PPG01
37 P22/TO00
38 P23/TO01
39 P24/EC0
63 P30/AN00
62 P31/AN01
61 P32/AN02
60 P33/AN03
59 P34/AN04
58 P35/AN05
57 P36/AN06
56 P37/AN07
55 P40/AN08
54 P41/AN09
53 P42/AN10
52 P43/AN11
13 MOD
64AVSS
16 VSS
18
C
43
P53/TRG1
42
P52/PPG1
41
P51/SDA0
40
P50/SCL0
3
PE3/INT13
4
PE2/INT12
5
PE1/INT11
6
PE0/INT10
29
P07/INT07
28
P06/INT06
27
P05/INT05
26
P04/INT04
25
P03/INT03
24
P02/INT02
23
P01/INT01
22
P00/INT00
7
P83
8
P82
9
P81
10
P80
11
P71/TI0
12
P70/TO0
51
P67/SIN
50
P66/SOT
49
P65/SCK
48
P64/EC1
47
P63/TO11
46
P62/TO10
45
P61/PPG11
44
P60/PPG10
17
VCC
1
AVCC
2
AVR
220
R1
15pFC32
0.1uF
C7
10uF
C3
AK2923H-E2
IC1
48
100k
R30
1M
R29
[MODE]
[STREAM/CENT]
PANEL BOARD
To Flash Writer
To Analog Board
10pin Cable
Green LED
Green LED
[DCDC Tr ON/OFF]
[Pedal SW]
[MUTE ON/OFF]
[Check LED]
2012
2012
2012
2012
2012
2012
1608 1608
High
DSX321G 16MHz
5pF
5pF

17
TU-3Dec. 2009
fig.d-Panel.eps@R
LED(15) LED(14) LED(11)
DGND
D+5.0
LED(10)
LED(9)
LED(8)
LED(22) LED(7) LED(21) LED(6) LED(20) LED(1) LED(5)
LED(12) LED(19)
LED(4)
D+2.8
LED(18)
DGND
LED(3)
D+5.0
DGND
LED(13) LED(17) LED(2)
D+5.0
RESET-OUT
LED(16)
LED(21)
LED(20)
LED(22)
LED(19)
LED(18)
LED(17)
LED(16)
LED(15)
LED(1)
LED(2)
LED(3)
LED(4)
DGND
D+2.8
DGND DGND
LED(24)
LED(23)
LED(12)
LED(12)
19-21/R6C-AL2N1VY/3T
LED9
12
19-21/R6C-AL2N1VY/3T
LED16
12
19-21/R6C-AL2N1VY/3T
LED19
12
0.1uF
C12
19-21/R6C-AL2N1VY/3T
LED21
12
TP80
TP63
P
57
TP56
TP54
P
53
TP50
TP48
TP46
TP44
TP42
T
P97
R7
UnPop
10uF
C9
R11
0
19-21/R6C-AL2N1VY/3T
LED17
12
19-21/R6C-AL2N1VY/3T
LED3
12
TP14
TP17
19-21/R6C-AL2N1VY/3T
LED7
12
TP19
TP24
TP26
19-21/R6C-AL2N1VY/3T
LED15
12
19-21/R6C-AL2N1VY/3T
LED20
12
19-21/R6C-AL2N1VY/3T
LED13
12
10uF
C6
19-21/R6C-AL2N1VY/3T
LED8
12
TP72
TP74
TP76
TP79
Q2
UnPop
1
32
TP81
TP82
10uF
C1
Q1
UnPop
1
32
19-21/R6C-AL2N1VY/3T
LED2
12
19-21/R6C-AL2N1VY/3T
LED5
12
19-21/R6C-AL2N1VY/3T
LED6
12
19-21/R6C-AL2N1VY/3T
LED10
12
19-21/R6C-AL2N1VY/3T
LED14
12
0.1uF
C15
19-21/R6C-AL2N1VY/3T
LED18
12
0.1uF
C22
10k
R23
u
F
19-21/R6C-AL2N1VY/3T
LED24
12
R12
UnPop
TP58
TP10
TP11
TP18
TP21
CAT24C02TDI-GT3
IC3
1SCL
5WP 2
VSS
3
SDA
4
VCC
19-21/R6C-AL2N1VY/3T
LED12
12
TP49
19-226SURSYGC/S530-A3/E2/TR8
LED11
4 32
1
19-21/R6C-AL2N1VY/3T
LED1
12
19-21/R6C-AL2N1VY/3T
LED4
12
TP93
TP28
TP33
TP35
TP40
TP45
TP84
TP90
KCSA04-104
LED25
3COM1
8COM2
5D.P
10G
9F 1E
2D 4C
6B
7A
4.7k
R2
4.7kR3
EXB28V821JX
RA4
18
6
54
3
27
XB28V821JX
RA2
18
6
54
3
27
RA6
18
6
54
3
27
EXB28V471JX
RA7
18
6 54
3 27
EXB28V471JX
RA8
18
6 54
3 27
820R4
820
R5
R33
UnPop
R34
UnPop
TP13
TP77
TP105
TP106
DTC114EUAT106(PB FREE)
Q3
1
23
DTC114EUAT106(PB FREE)
Q4
1
23
470
R32 470
R31
KPTL-3216SYCK
LED22
12
KPTL-3216SYCK
LED23
12
820
3
8 820
7
GREEN
YELLOW
+50
JUST TUNE LEFT
-50
JUST TUNE Right
RED RED RED RED
RED
1mA
2mA
3.4mA
High Brightness Mode
YELLOW
7SEG
Check LED
JUST TUNE CENTER
13.6mA
4mA
0
6.2mA
LED Current
2mA 6mA
Green LED
Green LED
1608 1608
2012 2012
2012
Normal Mode
RED
Green
Yellow
Brightness Mode +4.8V

18
TU-3Dec. 2009
Circuit Diagram (Analog, Input, Output, SW Board)
fig.d-Analog-e.eps@L
AGND
A+4
AGND
A+8
AGND
A+4
AGND
AGND
AGND
AGND
AGND
A+8
AGND
AGND
A+8
AGND
A+8
AGND AGND
D+5.0
DGND
AGND
DGND
A+8
C504
0.1uF
2SC4738-GR(TE85L.F)
Q500
1
23
10000pF
C512
NJM2882F05-TE1
IC500
1VIN
3CTRL
2GND
4
N-BP
5
VOUT
47k
R502
100k
R507
C508
UnPop
D500
GS1G-M4
TP508
D502
1SS387(TPH3.F)
0
R519
0
R520
UnPop
TP35
DTC114TUAT106
Q504
1
23
0.047uF
C517
D503
SS14
2SK879-Y(TE85R.F)
Q505
3
12
D501
1SS387(TPH3.F)
TP502
1SS362FV(TPL3)
D504
2
3
1
TP509
0.1uF
C505
TP517
T
D ( 0.5% )
10k
R515
TP526
2.2M
R524
4.7k
R525
1uF
C519
ECPU1C105KAC
UDZS TE-17 9.1B
D505
TP518
0.047uF
C516
TP510
2SK880-GR(TE85R.F)
Q508
3
12
TP506
TP547
D ( 0.5% )
10k
R514
TP503 TP500
1M
R526
C507
0.1uF
Q507
QS5U27TR(PB
1
52
10k
R528
DTC114TUAT106
Q503
1
23
TP504
47k
R503
1M
R527
C506
0.1uF
TP513
2SK879-Y(TE85R.F)
Q506
3
12
TP515
330k
R531
47k
R504
TP523
0
R517
UnPop
220
R532
RTT06 221 J
C500
47uF
16V
C502
47uF
16V
C510
100uF
16V
C513
10uF
16V
C518
47uF
25V
0
R550
C577
UnPop
C503
10uF
16V
TP542
TP541
TP545
S-8520
A
IC501
5VIN
1ON/_OFF
2VSS
VOU
T
4
EXT
0
R570
C520
10uF
16V
KM02018ABM1P
JK503
2
3
1
5
4
KM02018ABM1P
JK502
2
3
1
5
4
HTJ-064-13D
JK3
3
4
5
C501
100uF
16V
TP530
TP27
TP38
TP37
TP552 TP554 TP553
TP555
TP505 TP520
TP507
TP514
15
R577
15
R530
TP595 TP593
Blue
Black
ANALOG BOARD
006P
INPUT BOARD
INPUT
DC OUT
DC IN
Red
Battery
Black
Shield
R517,R520
1608
1608
1608
1608
1608
1608
1608
1608
2012
3216
1608
1608
1608
1608
shortcut on the board

19
TU-3Dec. 2009
fig.d-Analog-e.eps@R
A+8
AGND
AGND
A+8
A+4
A+8
AGND
AGND
A+4
AGND
A+4
AGND
AGND
D+5.0
DGND
DGND
D+2.8
AGND
D+2.8
DGND
DGND
AGND
AGND
TP519
2SC4117-GR(TE85L.F)
Q501
1
23
D ( 0.5% )
33k
R512
D(0.5%)
10k
R513
TP550
HTJ-064-12IMP
JK2
1
4
2
TP548
0
R5181k
R522
CN500
WIRING RIBBON 10P/AWG26/P2.0
3
2
1
4
9
8
7
6
5
10
56k
R523
P522
TP527ELL6SH151M
L500
100k
R510
TP551
100k
R509
Q507
QS5U27TR(PB FREE)
34
D(0.5%)
10k
R516
DTC114TUAT106
Q502
1
23
TP549
TP525
HTJ-064-12IMP
JK6
1
4
2
FREE)
SW3
JM-0404#01
100k
R508
10uF
C521
C522
UnPop
100k
R511
6800pF
C523
TP528
C599
0.1uF
C598
0.1uF
C511
100uF
16V
C515
10uF
16V
C514
10uF
16V
4.7k
R529
TP531
TP539
TP536
TP-CIR1R0
TP26
TP-CIR1R0
TP25
TP40
TP39
A
28MC-AVN-T2G
3
T
UDZS TE-17 4.3B
D506
820
R500
4.7k
R501
100k
R551 C556
UnPop
1k
R552
TP575
TP524 TP516
TP521
TP529
TP594
C555
10uF
16V
D ( 0.5% )
47k
R521
100pF
C509
High Brightness Mode + 4.8V
SW BOARD
Green
purple
white
OUTPUT BOARD
1pin
10pin
To Panel Board
BYPASS
OUTPUT
Pedal SW
BYPASS
ribon hole 10pin Ribon Cable
Yellow
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608

MEMO
TU-3Dec. 2009