Roland SH-101 User manual

Service Manual Roland SH-101
This file is ascan from the original service manual.
Never pay for acopy of this file. It should be available
for free!

Keyboard 32 key, F-scale Output Audio (OdBm max.)
Phones (80)
Gate (OFF=OV, 0N=12V)
CV (1 V/1 OCT, 0.415V ^5V)
vco Range (16', 8', 4', 2')
Pulse Width Modulation (50% ^0%)
Tune (±50 cent)
Gate (+2.5V or more)
CV (1V/1 OCT, o^iy)
EXT CLK (+2.5 or more)
DC (9V ^12V)
Input
VCF Cutoff Frequency (10Hz 'v 20kHz)
Key Follow (0 ^100%)
Attack Time (1 .5ms 4s)
Decay Time (2ms ^10s)
Sustain Level (0 ^100%)
Release Time (2ms 10s)
Power Drycells 1.5V x6
or 9V ^^2V AC Adaptor
Power Consumption 1W
Modulator LFO/CLK RATE (0.1Hz 'V 30Hz)
Dimensions 570(W) X311(D) X80(H)mm
22’/i6(W) X12‘/4(D) X3‘/8(H) in.
Controller Portamento Time (0 'V 5s)
Transpose (L/M/H)
Weight 4.1 kg/9 lb. (without Drycells)
Sequencer 100 steps max.
TOP VIEW
22 123
21
2
320
«
19
4.•nr.
.i
-1
ec, ?
r-X.S 1
VVIf a
jl: A. .
ijLjyyuu 186|k.SH*101
717
816
9b
u
10 f
"ir-
11 12 13 14 15
m
1.1Switch SSB02358
HEC0470-01-230
HSJ0789-01-020
SRM1034-K15
EVH-5XAP20B15-100KB
S3018P405-100KA
SUT1 13
TK-305
EVH-5XAP20A15-100KA
S2018P405-100KA
S2018P405-100KB
2. Switch
.3. Pot.
14. Switch
15. Keyboard
16. Case
17. Switch
18. Pot.
19. Pot.
20. Jack
21. Jack
22. Jack
23. Case
(13159319)
(13449706)
(13449611)
(13119303)
(13219242)
(13339420)
(13129120)
(12479225)
(13219274)
(13339328)
(13339329)
(029H001)
SLE-623-18P
EVH-5XAP20A26-2MA
KHD10901
SK-331-AR
Panel (Cabinet)
SSB022F3
S3018P405-1MA
S3018P405-100KB
HLJ0520-01-010
HLJ0520-0M10
HSJ0785-01-030
Battery cover
(13139135)
(13219275)
(13169608)
(004H014)
(072H133)
(13159121)
(13339422)
(13339421)
(13449126)
(13449125)
(13449409)
(065H115)
Jack
Jack
Switch
5. IPot.
6. Pot.
.Switch
Button
8. Pot.
9. Pot.
10. Pot.
11. 1Bender Unit PB-5
•All rotary knobs (016H071)
•All slide knobs (016H057) yellow/(01 6H059) green/(01 6H060) orange
•All LEDs GL-9PR2 (15029128)
1Printed in Japan.
BA2
BOTTOM VIEW
INNER PARTS LOCATION

SH-101
BLOCK DIAGRAM
GRIP
MOD
LFO/CLK
RANDOM NOISE
RATE
EXT <
I
CLK q:
IN
HOLD NOISE
o
CO RANDOM
RANGE TRANSPOSE
016‘OH
8M
04'OL
02'
AUTO
D/A
Converter
CPU PORTA-
MENTO GATE
(Key Assigner, Sequencer, TRIG
Arpeggiator etc) GEN GATE
FUNCTION SWS co Memory Back up Battery
o>H^<co
Q- oS oO^^32key Keyboard
Q>-
<<
20?
LU (_ Q_
3 3 Q X
CV CV
GATE GATE OUT IN
IN
OUT
2

NOV.1st,1982
CPU PROGRAM
The CPU 80C49-6-7301 controls the various modes and
functions of the SH-101 through aseries of programmed
steps, as shown in the attached flowchart. These actions
are described below.
Note:
Steps 3through 13are aseries of program steps that
are sequentially executed by the CPU at 1.5 to
3.5msec intervals. The CPU can modify this se-
quence any time new data is input.
1.
TEST MODE
The Test mode allows easy adjustment of the SH-101.
To enter the Test mode, first turn the power switch Off.
This is necessary as the Test mode cannot be entered
while the SH-101 is in any of the normal operating
modes. Now simultaneously press both the LOAD and
KEY TRANSPOSE buttons and turn the power switch
On. The CPU sets the voltage at the KCV and at the
Range to zero and turns the Gate Off. The unit is
now in the Test Mode. The voltage values at the KCV
and the Range, and the status of the Gate change ih each
of the function modes listed below.
Function Button KCV Range Gate
PLAY 2.75V OV Off
ARPEGGIO DOWN 2.5V OV Off
ARPEGGIO U&D 4.75V OV On
ARPEGGIO UP OV 4.75V On
LOAD OV OV Off
To enter anormal mode, either press the Hold button
down, or turn the power switch Off and then back On
again.
2. INITIAL SET
The CPU performs Initial Set when the power switch is
turned On or when the HOLD button is pressed during
the Test mode. This operation deletes all the data that is
stored in the built-in RAM, such as Keyboard and switch
mode data, but does not delete the Sequencer data.
3. RANGE DATA READ
The CPU reads and memorizes the positions of the VCO
Range, TRANSPOSE (L, Mand H) and GATE/TRIG
{LEO )switches.
4.
RANGE DATA OUTPUT
The CPU sends the VCO Range data (read in Step 3) to
the D/A Converter where it is converted into analog-
equivalent values.
RangeSelector Range Data
16'
8'
4'
T
IV
2V
3V
4V
If the CPU contains Key Transpose data (stored during
step 8of the previous program execution), the Key Shift
data is added to the Range Selector data. For example,
if the user selects the lowest F-key and sets the Range
Selector to 16', the Range data value will be 0.417V.
Likewise, if the user selects ahigher C-key and sets the
Range Selector to 2', the Range data value will be 5V.

SH-101
5. KEYBOARD READ
The CPU uses a4x8matrix to read the number and
position of the keys being pressed on the keyboard,
and determines the output priority of the CV data and
whether new Gate signal should be output according to
the key mode (LEGATO or NON-LEGATO) and the set-
tings of the panel controls (PORTAMENTO, ARPEG-
GIO, GATE /TRIG, etc.)
6. CLOCK CHECK
Any variation in the voltage of the Clock signal (LFO or
EXT CLK )is detected at the T1 terminal .If alow Clock
signal turns high, TR1 1inverts it to low and sends it to
the CPU, which then performs the following operations.
(a) Generates Random data.
(b) Prepares the data for Arpeggio and Sequencer
playing.
7. RANDOM DATA OUTPUT
The CPU outputs to the D/A Converter the random data
generated and stored in step 6(a).
8. FUNCTION SWITCH READ
The CPU scans all the function switches in order to
detect any changes made by the user. If an On/Off
change is detected, the CPU jumps to the appropriate
step.
Refer to the flow chart. The CPU can detect the On/Off
status of the HOLD function at both the Panel button
and the Pedal switch. When the KEY TRANSPOSE
button is pressed and anew key selected, the CPU iden-
tifies the key that was pressed on the keyboard and thus
identifies the key (pitch) to be transposed.
9. LOAD
If aKeyboard key, the LEGATO (HOLD) button or the
REST (KEY TRANSPOSE) button is pressed, the CPU
stores that information in the RAM, then jumps to step
12. If no key or button is pressed, the CPU jumps
directly to step 12.
10. PLAY
In the Play mode, the CPU reads the Sequencer data
stored in the RAM and prepares both the KCV and Gate
data, then jumps to step 12.
11. ARPEGGIO
If the CPU detects during step 6that the Clock signal
has turned high, the CPU prepares the KCV data accord-
ing to the order of the key numbers stored in the 4-byte
(32 keys) Arpeggio Key Buffer, then jumps to step 12.
If the Clock Signal remains low, the CPU jumps directly
to step 12.
12. CV OUTPUT
During the Arpeggio and Sequencer Play modes, the
CPU sends to the D/A Converter the necessary CV data
for executing the relevant steps for Arpeggio or
Sequencer playing. During all other modes, the
TRANSPOSE Switch data (L, Mor H)is either added to
or subtracted from the Keyboard information, and the
resulting value is sent to the D/A Converter. Examples of
this operation are shown below.
Transpose Switch
Position Key CV Data (After D/A Conversion)
LLowest F0.417V
MLowest F1.417V
HLowest F2.417V
HHighest C5.0V
13.
GATE & LED DATA OUTPUT
Port 2of the CPU outputs the Gate, Clock Reset (CLK
RST) and LED Illumination signals. The Clock Reset
signal resets the Clock signal whenever akey on the key-
board is pressed while either the GATE/TRIG Selector
is set to LFO or the ARPEGGIO mode is activated. The
LED Illumination signal illuminates the LEDs above the
function switches, but does not illuminate the LEDs for
the LFO and powerswitches.
At the end of step 13, the CPU returns to program 3and
repeats the sequence of steps from 3through 13.
•PIN CONNECTION (Top View)
TMP80C49P
TOE 140 VCC(+5V}
XTAL1 E239 ti
XTAL2E 338 P27
resetE 437 P26
ss 536 P25
INT 635 P24
EA 734 P17
rdE 833 P16
PSEN E932 E|P15
WR E10 31 p14
ALE E11 30 E|P13
dboE 12 29 E|P12
DB1 13 28 pi 1
DB2E 14 27 E|P10
DBS 15 26 PS
dbaE 16 25 prog
DB5E 17 24 P23
DB6 18 23 P22
DB7 19 22 P21
SS(0V)E 20 21 P20

NOV.Ist, 1982
SH-101
ADJUSTMENT PROCEDURES
(D) PulseWidth
Set the WAVEFORM to rU_
Adjust VR-2 {D/A TUNE) until the mark/space ratio is 1:1.
2. VCO ADJUSTMENT
Precautions:
The order of the adjustment procedures in these adjustment specifications
were determined assuming that the SH-101 unit has not been adjusted at all.
Therefore, when only afew sections are to be adjusted, please keep the
following points in mind.
•When adjusting the VCO Width, VCO Tune, and/or VCF, be sure that the
D/A Converter adjustment has first been completed. (This is because D/A
Converter failure may affect these circuits.)
•Because the VCO Width and the VCO Tune interact with each other, be
sure to perform both adjustments.
1
.
2.
Preparations:
•If the unit is in the Test mode, release the mode by either pressing the
HOLD button or resetting the Power Switch to On.
•Set the panel controls asshown in Fig. 1
.
•Connect the oscilloscope to SH-101 OUTPUT. Supply the reference F
note (based on A=442Hz) to the scope EXT. Input for the Lissajous
figure.
3. VCF ADJUSTMENT
Preparations:
•Set the panel controls as shown in Fig. 2.
•Connect the oscilloscope to the SH-101 OUTPUT.
I
I
II
I2' (Key Transpose function}
\
I
I
\SOURCE MIXER VCF VCA
VCO
MODULATOR VCF C
SOURCE MIXER
VCO
MODULATOR
II
III2'
I
IMJl amett FOM •A rmo mt juif Owwc rotm
EMV WOO ftrw
woe
Tmeo Mcs €MV
IMOSC tI
RAMCt
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:“:i\\4
j.' I
TUNC
4' r.
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iliil
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8' «
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(T)'
O' N.
i
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II
I* ~)
Ir
4 «
Lil 13
I1
16' I
I
i
i
u‘"
'U- I
f
\\
\I—b-' *rt frl ‘
;u®LI
4
II
16' (Key Transpose Function) It
I
Iu
II
16' (Sub Oscillator 1Oct. Down) II
II
!Q
a
t!aa
C3 o
1130 BOO E3 C3
IIi
I
i*I
Ir-
1MMiOB
III
Iti
(I
I
I
VOiUW( NT »ONTAMCNT
VOiUWC
Piano Keyboard oo
«• IPO
«<0 «Cf NOQ
lR-H- c
-—-e?
0o
I
I
II•i^
Transpose LMiddle CiPO I I J
ICO Vt' r1
h
I
I
Tmt
Keyboard of the SH-101
When the VCO Range is set
to 8'and the Transpose
5V switch to MIDDLE, A4
corresponds to 442Hz.
I
-JLI .I'j II
I
Tr^n^pose H
IMNOCN
iII
I
IIII1
I3V 4V
IIIFig. 1
F4A4 F5A5 I
1.Hold the A4 key down, and set the CUTOFF FREQ, for approximately
1kHz.
2. Alternately, play the F4 and F5 keys, and adjust VR-8 (VCF WIDTH)
until the F5 figure cycle Istwicethe F4 cycle.
1. D/A CONVERTER ADJUSTMENT Note:
To compensate for the variations of the components, the VCO Tune
Circuit is designed so that a+15V voltage can be supplied or inhibited.
(The position is shown in the circuit diagram with the Jmark.)
If the adjustment cannot be properly performed by adjusting VR-7,
short-circuit the break in the pattern on the back of resistor R102. If it is
already bridged or wired, open it.
Preparations:
•Connect the digital voltmeter (with more than 4significant digits) to the
CV OUT jack.
•While pressing both the LOAD button and the KEY TRANSPOSE
button on the SH-101 unit, turn the Power Switch On. (The SH-101 unit
is now in the Test mode.) 4. LFO MOD OFFSET
(A) VCO Width
Hold the F5 key down, and adjust either VR-7 (VCO TUNE) or VR-9
(TUNE) until the Lissajous figure is motionless.
Hold the F3 key down, and adjustVR-6 (VCO WIDTH) until the figure
is again motionless.
The F5 pitch will vary as VR-6 (VCO WIDTH) is turned.
Repeat steps 1and 2until the F3 and F5 figures are motionless.
Preparation:
•Connect the digital volt-
meter to test points TP-1
and TP-2 on the Bender
Circuit Board as shown in
Flg.3.
1. Adjust VR-3 (D/A LINE-
AR) until the voltmeter
reads 0±2mV
(A) D/A Tune
Confirm that the LOAD and TRANSPOSE LEDs are illuminated.
If any of the LEDs other than the LOAD LED is illuminated, press the
LOAD button.
Adjust VR-2 (D/A TUNE) on the Synth. Circuit Board until the digital
voltmeter reads OV ±ImV.
1
.
1
.
2.
2.
3.
(B) D/A Width (-f5V)
Press the PLAY button.
Adjust VR-1 (-I-5V) on the Synth. Circuit Board until the digital volt-
meter reads 2.75V ±1mV.
(B) VCO Tune
1. Place the unit in the Test mode. (While pressing both the LOAD button
and the KEY TRANSPOSE button.turn the Power Switch On.)
2. Press the U&Dbutton.
3. Confirm that VR-9 (TUNE) issetirt the center position.
4. Adjust VR-7 (VCO TUNE) until the output value is 442Hz.
1
.
2.
Note:
The adjustment can be per-
formed from the direction
of the foil pattern.
(C) D/A Linearity
1.Press the ARPEGGIO DOWN button.
2. Adjust VR-3 (D/A LINEAR) on the Synth. Circuit Board until the digital
voltmeter reads 2.5 V±ImV.
(C) Range Width
Place the unit in the Test mode
Press the U&Dbutton.
Press the UP button, and adjustVR-5 (RANGE WIDTH) until the output
pitch is the same as the outputpitch in the U&D mode.
1.
2.
(D) Repeat the above procedures (A) through (C) until all the voltage read-
ings are within ±1 mV of the specifications.
3.
4

%
X
SWITCH BOARD
6

NOV. 1st, 1982
CIRCUIT DIAGRAM
IC1,2 M5218L
IC3A5,12, 16,18 IR9022
IC6 TMP80C49P-6-7301
IC7 HD (or MC) 14050B
IC8 HD14556B
IC9,11 TL062
IC10 -4052B
IC13 CEM3340
IC14 IR3109
IC15 BA662A
IC17 MB8 (or MC1) 401 3B
TR1 2SD571 Lor K
TR23 2SC945 Selected for Noise
OTHER NPN TR 2SC1815GR
ALL PNPTR 2SA1015GR
D1 1SI 585
D3 05Z36Y
D4 1SZ46A
D5 05Z11X
D8 1SP35-200
ALL LED GL-9PR2
OTHER DIODE 1S2473
RESISTOR
•SN14K2EF or CPB25FX 1%MF
CP825BX 0.1% MF
CPB25DX 0.5% MF
(NO MARK) R25J 5%
POT on Synth Board
•RVS0707 Blue
RVG0707 Black
(NO MARK )RVF8P01
7

PARTS LIST
KEYBOARD 1C
004H014 SK-331-AR 15179136 TMP80C49P-6-7301 CPU
15229810 CEM3340 VCO
Dual D-type Flip-Flop
Hex Buffer
Dual 4-ch Multiplexer
Dual BCD to 4Decoder
Low power OP Amp
VCF
Low power Bi-FET OP Amp
(offset selected) white dot
OP Amp
CASE 15159105F0
15159128
MB84013B
072H133
065H115
065H116
Panel (cabinet)
Battery cover
Bottom panel
HD14050B
15159114 TC4052BP
15159308 HD14556B
15189146 IR9022
BENDER UNIT 15229801 IR3109
029H001 15189119 TL062
PB-5
152298020A BA662A
PCB 15189136B0 M5218L
149H177-1 Control board OPH177-1
Synth, board
LED board
(pcb 052H398C-1)
(pcb 052H398C-2)
(pcb 052H398C-3)
(pcb052H399B-1)
(pcb 052H399B-2)
(pcb 052H399B-3)
149H177-2 TRANSISTOR
OPH 177-2
149H177-3
149H178-1
149H 178-2
149H178-3
OPH177-3
0PH178-1
2SA1015-GR
2SC945 (NZ)
2SC1815-GR
2SC1583
15199113
151291080A
Bender board Noise generator
Jack board A0PH178-2 15129114
Jack board BOPH 178-3 15129130 Pair-TR (common E)
15129600 2SD571-L or K
2SK30A-3R
SWITCH
13119303
13169608
13129120
13159121
13159319
15139103
SRM1034-K15
KHD10901
sum 3
SSB022F3
SSB02358
SLE-623-18P
rotary
function DIODE
15019123
15019103
1S1585
1S2473
1SR35-20O
1SZ46A
push
slide
slide 15019208
13139135 lever 15019630
15019636
15019637
15029128
05Z-11X
05Z-36Y
GL-9PR2
016H071 Rotary pot or switch
Slide switch
Slide pot
Slide pot
LED
016H057
016H059
016H060
(yellow)
(green)
(orange)
POTENTIOMETER
Slider (30mm)
13339420
13339421
13339422
S3018P405-100KA
BUTTON
2247019200
12479225
S3018P405-100KB
S3018P405-1MA
Function-switch
TK-305 power switch
Slider (20mm)
13339328
13339329
JACK S2018P405-100KA
S2018P405-100KB
13449125
13449126
13449409
13449611
13449706
HLJ0520-01-110
HLJ0520-01-010
HSJ0785-01-030
HSJ0789-01-020
HEC0470-01-230
Mono, 06.5
Stereo, 06.5
03.5 Rotary
13219274
13219242.
13219275
02.5 EVH-5XAP20A15
EVH-5XAP20B15
EVH-5XAP20A26
100KA
AC Adaptor 100KB
2MA
NOV.1st,1982
SH-101
•MGS-1 PARTS LIST
CASE SWITCH
13129325
Trimmer
EVQ-PTR18K
Cover
300 065H117
thermet (blue)
RVS0707V101-3-30113299558
13299553 065H118
064H157
064H158
Cover
IK
RVS0707V101-3-102 OTHERS
Holder
2K
RVS0707V101-3-20213299559
Coil Spring
Plug Cord
Strap Pin
Strap
Screw
Rubber Cushion
070H040
Holder
100K
RVS0707V101-3-104
RVG0707V101-10-202 thermet (black)
RVG0707V1 01 -10-502
RV F8P01-503
RV F8P01-204
13299557
053H157
2K
13299560 KNOB
016H083
2228532500
5K
13299561
133H005
50K
carbon
13299136
123H001
200K
13299141
PCB 107H041
RESISTOR (metal film) 052H401
10Oppm
10Oppm
lOOppm
lOOppm
lOOppm
1(X)ppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
lOOppm
0.1%CRB25BX
CRB25BX
62.5K
13799701 POTENTIOMETER
125K 0.1%
13799702
PB-5RO 100KB
13219273
250K 0.5%
CRB25DX
13799703
500K 1%CRB25FX
13769247D0
137691 54K0
137691 67K0
137691 69K0
137691 73K0
13769258K0
SN14K2EF 1.69K 1%
SN14K2EF 5.6K 1%
SN14K2EF 6.8K 1%
SN14K2EF lOK 1%
SN14K2EF 15.4K 1%
SN14K2EF 16.9K 1%
SN14K2EF 20K 1%
•SK-331-AR (004H014) PARTS LIST
C.F
Natural Key
1106H026
D
/ /
0271
13769259K0
E.B
1
1
0281
137691 80K0
G
1
1
0291
SN14K2EF 28K 1%
SN14K2EF 30.1 K1%
13769256K0
1
1
A
0301
13769260K0 C.F
i I
0311
SN14K2EF 97. 6K 1%
SN14K2EF 100K 1%
SN14K2EF 470K 1%
13769261 KO
Sharp Key
Key Spring
Chassis
Guide Bush
Level Felt
OPH193 (pcb 052H381)
3x10 Self Tapping Binding Head
Contact Rubber
0322
137691 97K0
H29
070H029
061H142
3
1376921 3K0
H142
4
1%SN14K2EF IM
13769221 KO
068H004
1.5M 1% 5
13769257K0 SN14K2EF
H139
101H139
149H193OTHERS 7
Ceramic resonator CSA 6MHz with CSC 300
SDT-1000 thermistor
S1671140 coil
8
12389800
102H007
102H009
098H006
15229908
DC/DC converter
battery -I- side
battery —side
under panel
battery case
12449224 / i
H6
Key Stopper
Nuts
10
2345012500
2345012600
065H119
Terminal board
No. 13
11Terminal board
Dust cover
>
114H008 Film 2
1
3
4
5
11
0
6^ U8 9
8