PPG wave 2.2 User manual

PP£
wave 2.2
Service Manual

PPG WAVE 2.2 Adjusting instructions
The PPG WAVE 2.2 has fully digital tone-generators which
need no tuning at all. Becaurse of the pich-wheel which is
an analog control there can be a total detuning of the
instrument. Follow these instruction for gettinq propper
function. 3 a ^ rr
Open the instrument as followes:
Remove the two screws on both sides of the WAVE 2.2 s case.
Loosen the two screws at both posterior sides, which work as
hinges. Lift the cover and remove the savety-plate of the
printed circuit boards. Now the instrument is ready for
service.
1- Adjusting the A/D Converter of the analog controls
av P any P ro 9 ramm and have a look into the ANALOG
DISPLAY. Move one control to the right-end position (full
clockwise) and notice the corresponding analog value. A
full clockwise turned control must show value *63'. If not.
you have to adjust the A/D Converter. The position of the
A/D trim control is shown in picture 1. Adjust the A/D trim
control to show value "63" even short before the
end-position of the analog control. Make this adjustment
before adjusting the Pitch Wheel (Bender).
2. Adjusting the Pitch Wheel
Call up any program, that uses keyb.mode "0". Make shure,
that no detunings work on the oszillators (DETUrO). Choose
Bender Intensity BI:”3". In the way the Bender spreads
from one limitation to the other, thare are parts with no
effect called "windows". A "window", for example, is at
the center position. The center position of the wheel
should be in the middle of this window. It can be adjusted
by loosening the screw of the plastic wheel fixed on the
potentiometer axis and adjusting the center position of the
wheel exactly to the centre of the window.

3. Adjusting the filters
3.1. Adjusting the resonance intensity
The instrument is opened and power is on. Call up program
74 group A (original PPG program). Tune the instrument to
440 Hz (TTUNE: 440)- Choose group A for adjusting the
resonance. After power ON. the voices of the WAVE 2.2 are
in the normal order. Each time you press a key the next
voice gets enabled. (in the sequence 1.2.3 4.5.6.7.8) Now
press the first key. in the centre of the keyboard, and
adjust the trim-pot so. that the filter resonance is
dirictly before self-osci11ation. Press the same key again
and trim the next voice. Go through all the 8 voices this
way. It is important that they are all trimmed to the same
intensity.
3.2. Adjusting the cutoff-frequency of the filters
Swith to group B (program 74). Press a key in the higher
range of the keyboard, and adjust the cutof.f-f r equency so
that it becomes equal to the fundamental frequency of the
tonegenerator. Do the same procedure for all the 8 voires.
The positiones of the trim-pot s you find in the drawing
below.

—
o
u»
)
01
UI
i
«•>
K>
-•
t»
<i>
m
-J
(Ti
cn
I-
1.‘
10
—
0
PCS: "MB" to "I/O Connector A
1 - 1 2 V
♦ 12V
GND
G\D
-12V
-12V _
B03X*B0AX
B02X
PBO via Metronom push under
CB1 via Cassette Interface Clock
C2 Timer Dyn Sensor in
Ext start Sequencer
CA2 via Reset Sequencer
CV OUT - RES
Q_-Ci ock
Pitch Wheel CV in
CV Out - VCF
CV Out - VCA
PE7 VIA Footswitch - Program
Med Wheel CV In
Cl Timer Clock divider (1/3) In
02 Timer Sequencer Clock
Ext CV In
CA1 PIA Sequencer Sync
P05 VIA Trigger Out
GND CV In
C52 VIA Cassetteinterface seriell DATA I/O
PB4 VIA Cassetteinterface enable
PS3 VIA Sustain
PE2 VIA Trigger In
GMD CV In
1

p C3 "MB" to"!/0"
1
A 0
MPU-Adress
2
A 1
II
3
A 2
ll
4
A 3
II
5
A 4
II
6
A 5
M
7
A 6
II
8
A 7
M
9
A 8
II
10
A 9
II
1 1
A 10
II
12
A 1 1
II
13
A 1 2
II
1 4
A 13
II
15
A 14
II
16
A 15
II
17
D 0
Data Bus
1 8
D 1
i«
•19
D 2
ii
20
D 3
it
21
D 4
■ I
22
D 5
■ I
23
.. D 6
•i
24
D 7
n
23
FRO
2c
IRQ
2 7
£_(02)
23
RES
29
R/W
30
♦ 5 V
31
GND
PCE:
"I/O" Connector
S 4
1
LED Se. r
nd Panel
2
GND
3
GND
4
LED "B"
5
Ext CV In
0 iC 76 Enable
; 'C 74/7:/76 - A Bit'
° IC 74 Enable
* ,( = 74/75/76 - C Bit
0 IC 74/75/76 - B Bit
1 IC 75 Enable
]l p itch Wheel CV In
; J Mod Wheel CV In
U V
15 LED "A"
16 Multiplexed .CV OUT
-onnector
2

PCS:
"Or 4" Connector A
1
2
3
4
5
5
7
8
9
10
1 1
12
13
1 4
15
16
18
19
20
Reson. CV multiplexed
MPU Q-Clock
NC
NC
NC
VCF CV multiplexed
VCA CV multiplexed
D/A -B-Enaole
D/A -A-Enable
D 0 MPU-Data
D 1
D 2
D 3
D 4
D 5
D 6
D 7 "
Data Latch (LS 379) =Multiplex-S witch-Coniroiler
Latch Enable Line
" " (LS 377) =CV - LAG - Controller
Latch Enable Line
M " (LS 377) *CV - LAG - Gondolier
Latch Enable Line
PCS: "0F4" Connector B
1
D/A Latch Clock
2
Jackplus -VCF In
3 D/A -C-Enable
4
D/A -D_Enable
5
Audio-Ou t-D
6
H ..
7
" " -A
8 Sound RAM Data
9
H It
10
M It
1 1
II II
12
• I II
13
II II
1 4
15
II II
16
Audio-Out -B
17
+ 12V
18
-12V
19
NC
20
*5 V
2 1
GND =0V
3

-La:
’MS" tc "PROZ" Conncector A
1. A
0
MPU-Adress Bus
2
A
1
M ri ii
A
2
ll
it ii
4
A
3
II
ii ii
5
A
4
ll
ii ii
6
Q- Cl ock
7
E 02 x
8
A
© - MUX
o
A
1 -
••
10
A
2 -
ii
1 1
G
MUX
12
-
13
-
14
-
5
-
16
-
17
D 0
MPU
-Data-Bus
18
D 1
n
ll II
19
D 2
•in
• 1 ll
20
D
3
•i
II <»
21 D
4
•i
ii ll
22
D
5
ii
ii ll
23
D 6
ii 11 ll
24
D
7
ii
11 ll
25 .•
IRQ
26
-
27
E
( 0 2 ) C! ock
23
Restart
29 r/ IV
30 + 5V
3 1
GND
PCB: "MB" to "PROZ" Connector
1
N .C .
2
D 0
3
D 1
4
D 2
5
D 3
6
D 4
7
D 5
8
D 6
9
D 7
10
N..C .
1 1
N.C.
12
♦ 5 V
13
GND
Sound-Ram -Data
•• ii ii
ii n ii
ii it ii
•i ir n
•I ii ii
•i ii ii
ii ii ii
4

PC3
"PROZ"
DCft *T LOOSE TIME !
SEftO THIS BOARD TO PPG
PPG-PALM INSTRUMENTS GMBH
WANDS8EKER CHAUSSEE 151
D-2Q00 HAMBURG 76

vcr
in
C
V
in
Sustain
Chi
Ch
2
Phones

C
ft
tic

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