BOSSCO CE-5(T) Operating and maintenance manual

SERVICE NOTES
Second Edition
Issued by RJA
Copyright © 2002 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of ROLAND CORPORATION.
Printed in Japan (0800) (AS)17059623E2
May 2002 CE-5(T)
SPECIFICATIONS.............................................................2
LOCATION OF CONTROLS,PARTS LIST ...................3
EXPLODED VIEW,PARTS LIST ..................................... 4
PARTS LIST........................................................................5
THE INSPECTION METHOD ........................................8
CIRCUIT BOARD..............................................................9
CIRCUIT DIAGRAM......................................................10
WARNING
Due to an IC change, the parts have been changed from serial No. KP16600.
We call the new type of this model, CE-5A for identifying the old type and new
type for convenience on service system.
Although the model name will change from “CE-5” to “CE-5A”, the product
pedal is still labeled “CE-5”.
The appearance of “CE-5” and “CE-5A” are the same. Identify by the serial
number or the model name that is silk-screen printed on the board.
When referring to the service notes or ordering parts, check the model name
using the above process.
This service note is for “CE-5A”. Refer to “CE-5 SERVICE NOTES”(#17059623)
when repairing “CE-5”. Variable resistor, jack, switch and mechanical parts for
the “CE-5” and “CE-5A” are compatible.

2
May 2002
SPECIFICATIONS
Controls
Pedal Switch
Effect Level
Modulation Rate
Modulation Depth
High Filter
Low Filter
Indicator
Check Indicator (serves also as battery check indicator)
Jacks
Input
Output A(MONO)/B
AC Adaptor
Input Impedance
1 M ohm
Output Impedance
1 k ohm
Recommended Load Impedance
10 k ohm or greater
Residual Noise
-93 dBu or less (IHF-A, Typ.) (Filter Control knob; center)
Power Supply
DC 9 V; Dry battery (6F22/9V)
AC Adaptor (PSA-series)
Current Draw
22 mA (DC 9 V)
* Expected battery life under continuous use:
Carbon: 12 hours
These figures will vary depending on the actual conditions of use.
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
410 g / 0.9 lbs (including battery)
Accessories
Owner’s manual English:(#2604776702)
Japanese:(#2604776603)
Dry Battery; 6F22/9V (#********)(Carbon)
Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTES,” and
“Information”)
Options
AC Adaptor PSA-Series
*0dBu = 0.775 Vrms
* In the interest of product improvement, the specifications and/or appearance of
this unit are subject to change without prior notice.

3
CE-5(T)
LOCATION OF CONTROLS,PARTS LIST
fig.panel
NO. PART CODE PART NAME DESCRIPTION
1 13449711 AC ADAPTOR JACK HEC-0470-01-630
2 2253753801 PSA CAUTION 253-538
3 22480260 ROUND KNOB PR KNOB MF BLK/LCG
13289155 POTENTIOMETER (E.LEVEL, RATE) RK0971110 250KC
4 22480260 ROUND KNOB PR KNOB MF BLK/LCG
13289154 POTENTIOMETER (DEPTH) RK09711100K4A 100KB
5 13449150MF PHONE JACK (STEREO) HTJ-064-12D
6 2235730400 FOOT BASE (PEDAL MAT) 235-304
7 2202785100 BOTTOM COVER 202-851
8 2235730500 BOTTOM BASE 235-305
9 G253751603 BOTTOM CAUTION PSA FCC/CE/C-TICK/EMC GRY
10 752802T000 PEDAL
11 F3449112 JACK (STEREO) HTJ-064-13D
12 22480220 P R-KNOB (INTERNAL) (SS) BF BLK/LCG
22480221 P O-KNOB (EXTERNAL) (OUTER) S BLK/LCG
13289151 POTENTIOMETER (FILTER) RK0972310 50KAX2+250KC
13 2222748802 PANEL
14 752803C000 CASE
15 1502928100 LED (RED) L-34HDSL

4
May 2002
EXPLODED VIEW,PARTS LIST
fig.explo
[PARTS]
[SCREW]
No. PART CODE PART NAME DESCRIPTION Q’TY
1 13129710 SWITCH (PUSH) JM-0404 1
2 2226733300 CUSHION 226-333 1
3 F3419102 BATTERY CONNECTOR 1
4 G253751603 BOTTOM CAUTION PSA FCC/CE/C-TICK/EMC GRY 1
5 2235730500 BOTTOM BASE 235-305 1
6 2202785100 BOTTOM COVER 202-851 1
7 2216756000 INSULATION SPACER 1
8 2215770201 PEDAL GUIDE BUSH 215-702 1
9 2217710900 COIL SPRING 217-109 1
10 2235730400 FOOT BASE (PEDAL MAT) 235-304 1
No. PART CODE PART NAME DESCRIPTION Q’TY
a H5039401 NYLON WASHER 3X6X0.5 2
b 40010267 SCREW M3X10 BINDING FE BZC 2
c 40010901 SCREW M3X6 BINDING B1 BZC 4
d H5029820 SCREW M3X10 THUMB SCREW 1
11
2
3
4
a
5
6
7
8
9
d
10
b
c

5
CE-5(T)
PARTS LIST
fig.part1e
CASING
2235730500 BOTTOM BASE 235-305 1
2235730400 FOOT BASE (PEDAL MAT) 235-304 1
2202785100 BOTTOM COVER 202-851 1
# 752803C000 CASE 1
# 2222748802 PANEL 1
# 752802T000 PEDAL 1
KNOB,BUTTON
22480260 P R-KNOB MF BLK/LCG 3
22480220 P R-KNOB (INTERNAL) (SS) BF BLK/LCG 1
22480221 P O-KNOB (EXTERNAL) (OUTER) S BLK/LCG 1
SWITCH
13129710 JM-0404 SWITCH (PUSH) SW1 1
JACK,EXT TERMINAL
13449150MF HTJ-064-12D PHONE JACK (STEREO) JK2,JK3 2
F3449112 HTJ-064-13D JACK (STEREO) JK1 1
13449711 HEC-0470-01-630 AC ADAPTOR JACK JK4 1
PWB ASSY
# 752803O000 JACK BOARD ASSY CE-5A 1
# 752803L000 LED BOARD ASSY CE-5A 1
# 752803P001 MAIN BOARD ASSY CE-5A 1
IC
# F5199105 S-81250 SGY-Z IC (REGULATOR) IC7 1
# 02894289 NJM022BM IC (OP AMP) IC2,IC4,IC6 3
# F5209133 ES56028S IC (ECHO) IC1 1
15289141 M5223AFP-600D IC (BIPOLAR OP AMP) IC5 1
TRANSISTOR
15319108 2SC-3324GR-TE85R TRANSISTOR Q1 1
15319107 2SC4116-GR(TE85R) TRANSISTOR Q5,Q6,Q7,Q8,Q9,Q10 6
F5329530 2SK879Y FET TRANSISTOR Q2,Q4 2
15329103T0 2SK880-GR(TE85R) FET TRANSISTOR Q3 1
DIODE
01019534 1SS355 TE-17 SWITCHING DIODE D3,D4 2
1502928100 L-34HDSL LED (RED) LED1 1
15339121 1SS301(TE85R)(CHIP) DIODE DA1,DA2 2
F5339201 GS1G DIODE D2 1
F5339312 RD5.6S B3 DIODE D1 1
RESISTOR
00567023 RPC05T 101 J MTL.FILM RESISTOR R56 1
00567156 RPC05T 102 J MTL.FILM RESISTOR R1,R18,R67 3
00567289 RPC05T 103 J MTL.FILM RESISTOR R2,R5,R7,R9,R10,R12,R19,R23,R25,R27,R35,
R37,
18
00567412 RPC05T 104 J MTL.FILM RESISTOR R3,R21,R28,R33,R40,R41,R62 7
00567556 RPC05T 105 J MTL.FILM RESISTOR R6,R14,R20,R24,R34,R53,R64 7
00567290 RPC05T 123 J MTL.FILM RESISTOR R11,R26 2
00567423 RPC05T 124 J MTL.FILM RESISTOR R58 1
00567301 RPC05T 153 J MTL.FILM RESISTOR R17,R43,R61 3
00567189 RPC05T 182 J MTL.FILM RESISTOR R42 1
00567312 RPC05T 183 J MTL.FILM RESISTOR R16 1
SAFETY PRECAUTIONS:
The parts marked have
safety-related characteristics. Use
only listed parts for replacement.
CONSIDERATION ON PARTS ORDRING
When ordering any parts listed in the parts list, please specify the following items in the order sheet.
QTY PART NUMBER DESCRIPTION MODEL NUMBER
Ex.10 22575241 Sharp Key C-20/50
15 2247017300 Knob (orange) DAC-15D
Failure to completely fill the above items with correct number and description will result in delayed or even
undelivered replacement.
NOTE: The parts marked # are new. (initial parts)

6
May 2002
00567323 RPC05T 223 J MTL.FILM RESISTOR R22 1
00567456 RPC05T 224 J MTL.FILM RESISTOR R68 1
00567334 RPC05T 273 J MTL.FILM RESISTOR R4,R8 2
00567345 RPC05T 333 J MTL.FILM RESISTOR R36,R52,R65 3
00567112 RPC05T 471 J MTL.FILM RESISTOR R48 1
00567245 RPC05T 472 J MTL.FILM RESISTOR R49,R51 2
00567378 RPC05T 473 J MTL.FILM RESISTOR R13,R15,R55,R57,R59 5
00567256 RPC05T 562 J MTL.FILM RESISTOR R60 1
00567389 RPC05T 563 J MTL.FILM RESISTOR R38,R39,R45,R46 4
# 01892767 MCR03 EZH J 752 CHIP RESISTOR(1608TYPE) R29,R31 2
# 01892989 MCR03 EZH J 753 CHIP RESISTOR(1608TYPE) R30,R32 2
POTENTIOMETER
# 13289155 RK0971110 250KC POTENTIOMETER E.LEVEL RATE VR3,VR4 2
13289154 RK09711100K4A 100KB POTENTIOMETER VR2 1
13289151 RK0972310 50KAX2+250KC POTENTIOMETER VR1 1
CAPACITOR
13549329M0 ECQ-B1H104KF3 0.1/50V POLYEST. CAPACITOR C8 1
13639546M0 ECEA1CKA100B 10UF/16V CHEMICAL CAPACITOR C1,C7,C17,C35,C47,C48 6
13639550M0 ECEA1CKA101B 100UF/16V CHEMICAL CAPACITOR C27,C32,C33 3
13639549M0 ECEA1CKA470B 47UF/16V CHEMICAL CAPACITOR C14,C36,C53 3
13639602M0 ECEA1HKA010B 1UF/50V CHEMICAL CAPACITOR C2,C16 2
# 13639601M0 ECEA1HKAR47B 0.47/50V CHEMICAL CAPACITOR C13,C43 2
01674701 ECJ1VF1E104Z 0.1UF/16VK CERAMIC CAPACITOR(CHIP) C10,C25,C26,C34,C37 5
02450767 ECJ1VB1E183K CERAMIC CAPACITOR C21,C23 2
01674612 ECJ1VB1H103K CERAMIC CAPACITOR C28,C30,C46,C49,C50 5
01674478 ECJ1VB1H122K CERAMIC CAPACITOR C52 1
01674523 ECJ1VB1H272K CERAMIC CAPACITOR C12,C15 2
01674534 ECJ1VB1H332K CERAMIC CAPACITOR C19,C22 2
01674578 ECJ1VB1H682K CERAMIC CAPACITOR C3,C5 2
02456534 ECJ1VF1C334Z CERAMIC CAPACITOR C24,C29 2
01674667 ECJ1VF1H333Z CERAMIC CAPACITOR C44,C45,C51 3
01674689 ECJ1VF1H473Z CERAMIC CAPACITOR C20,C31 2
01674334 ECUV1H101JCV CERAMIC CAPACITOR C4,C9 2
01674356 ECUV1H151JCV CERAMIC CAPACITOR C40 1
01674389 ECUV1H221JCV CERAMIC CAPACITOR C41,C42 2
01674390 ECUV1H271JCV CERAMIC CAPACITOR C11,C18 2
01674423 ECUV1H471JCV CERAMIC CAPACITOR C38,C39 2
WIRING,CABLE
23477381RT FLAT CABLE 12P 1
SCREWS
H5029820 SCREW M3X10 THUMB SCREW 1
H5029325 SCREW 3X6 PAN HEAD TAPTITE-2 BZC 5
H5039205 WASHER 12.5X9.5X0.5/0.9 INTERNAL TOOTH FENI 3
H5039510 NUT M9X12X2 FENI 3
H501941301 SCREW 3X10MM BINDING MACHINE FEBC 2
H5039104 JACK WASHER M9.2X14X1.6 AL 2
22137709 JACK SPACER M9.6X14X1.0 1
H5039401 NYLON WASHER 3X6X0.5 2
H5039521 VR ACCESSORY NUT M7 4
H5039112 WASHER M9 3
40010267 SCREW M3X10 BINDING FE BZC 2
40010901 SCREW M3X6 BINDING BI BZC 4
PACKING
G2627738 INNER BOX 1
# 2260725203 PACKING CASE 1
MISCELLANEOUS
G253751603 BOTTOM CAUTION PSA FCC/CE/C-TICK/EMC GRY 1
40016512 INSULOK TIE 80M/M T-18S 2
2226733300 CUSHION 267-333 1
2253753801 PSA CAUTION 253-538 1
2216756000 INSULATION SHEET 216-560 1
2215770201 PEDAL GUIDE BUSH 215-702 1
2217710900 COIL SPRING 214-109 1
F3419102 BATTERY CONNECTOR 1
H2369402 POLYCA PIPE M3X6X6 1
ACCESSORIES (Standard)
# 2604776603 OWNER’S MANUAL JAPANESE 1
RESISTOR

7
CE-5(T)
# 2604776702 OWNER’S MANUAL ENGLISH 1
# ******** BATTERY MANGANESE 1
ACCESSORIES (Standard)

8
May 2002
THE INSPECTION METHOD
Output waveform check
1. Connect an oscillator to the INPUT jack, and input test signal.
2. Connect an oscilloscope to the OUTPUT A jack.
3. Check that the minimum and maximum values for the delay time are as follows.
fig.check1
. Residual noise check
1. Connect a 47kΩshort plug to the INPUT jack.
2. Connect a noise meter to the OUTPUT A jack.
3. Measure the noise and check that it is -93dBu(IHF-A) or lower.
fig.check2
INPUT
30Hz
200mVp-p
SET CONTROLS OUTPUT Waveform
(RANGE:1mS/DIV, 100mV/DIV)
Minimum DELAY TIME Check
OK : 3.6mS~4.4mS
30Hz
200mVp-p
(RANGE:1mS/DIV, 100mV/DIV)
Maximum DELAY TIME Check
OK : 7mS~8mS
47k ohm
Short Plug
Noise Check
OK : < -93dBu(IHF-A)
INPUT SET CONTROLS OUTPUT Waveform

9
CE-5(T)
CIRCUIT BOARD
fig.circit
fig.circit
View from component side
View from foil side

10
May 2002
CIRCUIT DIAGRAM
fig.circit
FILTER LOW
A8V
LED BOARD ASSY
INPUT
752803L000 (PCB 2291749600)
GRY
A9V
WHT
A8V
A8V
(PCB G2927203 2/2)
DEPTH
(PCB 2292768700)
IN JACK GND
A8V YEL
GRN
A4.0V
A8V
BRN
E.LEVEL
752443O000
A9V
RED
OUTPUT B
A8V
ORG
(PCB G2927203 1/2)
FILTER HIGH
A8V
VIO
(F5209133)
AC ADAPTOR
OUTPUT A (MONO)
A8V
BLK
JK BOARD ASSY
A8VA8V
MINMAX MIN MAX MINMAX
CUTFLAT
RATE
CUTFLAT
*1
*1
GRY ORG
WHT
CHECK
*1 : No Mounting
*2 : S-81250SGY or NJU7201L50-T3
*1 *2
*1 *1
752803P001 MAIN BOARD ASSY
D
A
+
+
+
+
D
A
+5V
A
+
D
+
+5V
D
+
+
D
+
+A
A
A
A
D
D
+
+
+
A
D
+
+
+5V
+
D
A
D
D
+
+
+
D
+5V
D
+5V
+
+
D
+
D
A
A
A
A
A
A
A
A
A
D
C16 1/50
C32 100/16
R47 10k
R53 1M
5 7
SW1 JM-0404
1 2
13
20
VR4 250kC
1
2
3
R8 27k
R18 1k
Q4 2SK879Y
3
12
R33 100k
R50 10k
R46 56k
R60 5.6k
C5
0.0068
R31 7.5k
C30 0.01
C15 0.0027
C18 270p R24
1M
9
10
DA1 1SS301
1 2
3
Q6 2SC4116GR
1
23
R52 33k +
-
IC4B NJM022BM
6 5
7
R44 10k
C42 220p
C43 0.47/50
C21 0.018
C24 0.33
C2 1/50
R65 33k
BT1
9V 006P
12
21
19
20
16
R36 33k
R55 47k
VR1-a 50kAx2
1
2
3
17
14
+ -
IC4A NJM022BM
2 3
1
C45 0.033
Q8 2SC4116GR
1
2 3
R39 56k
C26 0.1
R68 220k
R9 10k
D2
GS1G
10
12
18
16
R5 10k
C33 100/16
C40 150p
R40 100k
C50 0.01
C37 0.1
DA2 1SS301
1 2
3
R64 1M
VR3 250kC
1
2
3
15
3
R12 10k C8
0.1(P)
R4 27k
Q1 2SC3324GR
1
2 3
R20 1M
R42 1.8k
R58 120k
C27 100/16
R32 75k
R10 10k
R26 12k
R28 100k
18
D1 RD5.6SB3
1 2
C49 0.01
C41 220p
R15 47k
RH03ADCS4X (47kB) RT1
1
2
3
C23 0.018
C28 0.01
R23 10k
+ -
IC6A NJM022BM
2 3
1
LED1 L-34HDSL
12
2
JK3 HTJ-064-12D
1 2 3
22
12
15
D3 1SS355
12
R1 1k
R54 10k
C7 10/16
JK1 HTJ-064-13D
1 2 3
9
R51 4.7k
C38 470p
Q10 2SC4116GR
1
2 3
R48 470
C10 0.1
4
JK2 HTJ-064-12D
1 2 3
1
C3
0.0068
R49 4.7k
R41 100k
+ -
IC2B NJM022BM
6 5
7
2
3
Q5 2SC4116GR
1
2 3
C31 0.047
Q2 2SK879Y
3
12
C14 47/10
C11 270p
R11 12k
C22
0.0033
JK4 HEC0470-01-230
2 1 3
17
R13 47k
C17
10/16
C34 0.1
+ -
IC5B M5223AFP
6 5
7
R56 100
Q9 2SC4116GR
1
2 3
R27 10k
C13
0.47/50
R29 7.5k R30 75k
R22 22k
VR1-a
1
2
3
D4 1SS355
12
C9 100p
R17 15k
C1
10/16
R57 47k
Q7 2SC4116GR
1
2 3
R38 56k
C6
100/16
5
11
13
19
R34 1M
R14 1M
C4 100p
C47
10/16
C48 10/16
C51 0.033
C39 470p
R59 47k
R7 10k
C20 0.047
R63 10k
6
7
14
VR1-b 250kC
1
2
3
R21 100k
Q3 2SK880GR
3
1 2
+ -
IC2A NJM022BM
2 3
1
R45 56k
R67 1k
+ -
IC6B NJM022BM
6 5
7
8
1
VR2 100kB
1
2
3
C44 0.033
R6 1M
C25 0.1
R43 15k
IC1 ES56028S
VCC
1
REF
2
A GND
3
D GND
4
NC
5
F_ADJ
6
uCOM/EASY
7
VDD
8
TEST
9
MODE
10
REQ/DEL1
11
SECK/DEL2
12
SEDATA/DEL3
13
MUTE
14 GC1 15
CC1 16
GC0 17
CC0 18
OP1 OUT 19
OP1 IN 20 OP2 IN 21
LPF2 OUT 22
LPF2 IN 23
LPF2 OUT 24
NC 25
ECHO FB 26
LPF1 OUT 27
LPF1 IN 28 R16
18k
R25 10k
C19 0.0033
+ -
IC5A M5223AFP
2 3
1
R66 10k
R62 100k
11
C53 47/10
R61 15k
C52 0.0012
+ -
IC6C NJM022BM
84
C46 0.01
R35 10k
C29 0.33
C12 0.0027
+ -
IC5C M5223AFP
84
+ -
IC2C NJM022BM
84
IC7 S-81250SGY
IN
2OUT 3
COM
1
IC3
IN
2OUT 3
COM
1
TER2 EARTH_TERMINAL(RV-2)
C36 47/10
R37 10k
C35 10/16
R3 100k
TER1 EARTH_TERMINAL(RV-2)
+ -
IC4C NJM022BM
84
R19 10k
R2 10k