Sony D99 CHASSIS User manual

CD section
System
Laser diode properties
Spindle speed
Scan velocity
Error correction
D-A conversion
Frequency response
Wow and flutter
Outputs (at 9 V input level)
“*Measured by EIAJ CP-307
General
Power requirements
CAUTION
SPECIFICATIONS
Compact disc digital audio system
Material: GaAlAs
Wavelength: 780 nm
mission duration: Continuous
Laser output: Less than 44.6.W*
*This output is the value measured at a distance of 200 mm
from the objective lens surface on the Optical Pick-up Block.
500 r.p.m. to 200 r.p.m. (CLV)
1.2-1.4 m/sec.
Sony Super Strategy Cross Interleave Reed Solomon Code
{-bit quarz time-axis control
20-20,000 Hz *2dB
Below measurable limit’ *
Line output (stereo minijack)
Output level 1.0 V rms at 50 kilohms
Load impedance over 10 kilohms
Headphones (stereo minijack)
9mW + 9 mW at 16 ohms
Rechargeable battery pack BP-2EX (supplied)
Battery case EBP-2 (supplied) and two size AA (LR6) alkaline
batteries (optional)
DC IN 9 V jack accepts:
Sony AC power adaptor (supplied)
-— Continued on page 2 —
Use of controls or adjustments or performance of pro-
cedures other than those specified herein may result in
hazardous radiation exposure,
COMPACT DI
US Model
Canadian Model
AEP Model
UK Model
E Model
DISstmMaN
Model Name Using Similar Mechanism | D-9,//90
CD Mechanism Type CDM-90

D-99
Power consumption 2.6 W OC
Dimensions
Weight
Supplied accessories
Approx.
130.0
x
31.1
x
142.0
mm
(5'/s
x
1"/s
x
5%/s
in.)
(w/h/d)
not
incl.
Inclined
part
(depth),
projecting
parts
and
controls
Approx.
131.0
x
32.4
x
142.7
mm
(51/4
x
15/6
x
55/e
in.)
(w/h/d)
incl.
projecting
parts
and
controls
Approx.
420
g
(15
0z)
not
incl.
rechargeable
battery
Approx.
500
g
(1
Ib
1
02)
incl.
rechargeable
battery
. AC power adaptor (1), Battery case (1)
Rechargeable battery pack (1), Carrying case (1)
Connecting
cord
(1)
(stereo
minipiug
+
two
phono
plugs)
Stereo headphones (1)
Design and specifications subject to change without notice.
TABLE OF CONTENTS
Section Title Page
Specifications POM ee mere e errr eee eee eee eee Hee ee ene eee eeeneeaeeeeHeeseeesereses 1
Ai: SGP NER IN exhausts einccuitendinnn acta aatraseeeeauccals 2
2 SERVICING NOTES. ----:-sscccssssccsccscesssccnsecossscevsescenes 3
Befor Replacing the Optical Block COOH EOE HREOC HH EEO EOOD 3
Note on Laser Diode Emission Checkerrrrsrrrrsessersseeseee 4
Laser Diode Check Procedure OOO er ee eer eneeeereenreeesereeneees 4
Service Mode (service program) rere rrerrrreeererere rr Tere rrr yy 4
Explanation of Terminals (IC3801 CXD8178Q)-+rreseeerees 5
3. ELECTRICAL ADJUSTMENTS ere ee eer eres 6
4, DIAGRAMS
4-1, Block Diagrams Cece e eee ew erro rer ne neene eee eeeeeseeeseeeennenee 9
4-2, PC Board/Switch/Motor Layouts crrrrrereerseeees 11
4-3, Semiconductor Lead Layouts rerrrsrsesssseseseseeeens 12
4-4, Printed Wiring Boards Peo rer erreverreree cere eerreeererene 14
4-5, Schematic Diagrams OEP ECTeTOEPrErerrererree ee er rer ee rr yy 19
4-6, Ic Block Diagrams Pomme ere mee re rreeeeerrerereereessseeeeee 22
5. EXPLODED VIEWS Poe eee ere eanen eer ee ee eeeeeeeesereneeeeseeesees 24
6. ELECTRICAL PARTS LIST Peererre errr eee er ere rere reer errr rr 26
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A\ ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
SECTION 1
GENERAL
LOCATION AND FUNCTION OF CONTROLS
Lens
The laser beam is
emitted from this point to
pick-up signal on the
disc.
PHONES (headphones)/REMOTE
jack
Disc window
Display window
Normally the track number and the
elapsed playing time are shown.
When the power is supplied’ through
the DC IN 9 V jack, the window will
light up.
VOLUME control
(for listening headphones)
ENTER/REMAIN
button
HOLD/RESUME
switch
Slide this switch to its rightmost
position. This locks the buttons to
prevent them from being acciden-
tally pressed (HOLD function). To
resume disc play from the point
where you last stopped the play, set
the switch to the right or center
position (RESUME function).
KEY MODE (AMS*/SEARCH/INDEX)
button
PLAY MODE button
* AMS is the abbreviation of Auto Music Sensor.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.

@
(stop)
button
Ke
mrt
(AMS*/SEARCH/INDEX)
buttons
ml (play/pause) button
OPEN button
REMOTE jack
Connect the optional
remote control unit.
LINE OUT jack
{stereo mini jack)
BASS BOOST switch
DC IN 9 V jack (external power input) jack
D-99
SECTION 2
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer
electrostatic breakdown because of the potential difference
generated by the charged electrostatic load, etc. on clothing
and the human body.
During repair, pay attention to electrostatic breakdown and
also use the procedure in the printed matter which is
included in the repair parts,
The flexible board is easily damaged and should be handled
with care,
Before Replacing the Optical Block
Please be sure to check thoroughly the parameters as par
the “Optical Block Checking Procedures” (Part No. : 9-960-
027-11)
issued
separately
before
replacing
the
optical
block,
Note and specifications required to check are given below.
e
FOK output : IC501@pin
When checking FOK, remove the lead wire to spindle
motor
and
unsolder
and
open
IC801@pin
(FOK),
* S carve P-to-P value : 3Vp-p
When checking S carve P-to-P value, remove the lead wire
to spindle motor,
* Adjusted part for focus gain adjustment : RV505
* RF signal P-to-P value : 0.7 — 1.25Vp-p
* Traverse signal P-to-P value: 1.5Vp-p
* The repairing grating holder is impossible,
* Adjusted part for tracking gain adjustment : RV501
Flexible Circuit Board Repairing
* Keep the temperature of the soldering iron around
270°C during repairing,
Do not touch the soldering iron on the same conductor
of the circuit board (within 3 times),
Be careful not to apply force on the conductor when
soldering or unsoldering,
°
Notes on chip component replacement
* Never reuse a disconnected chip component,
* Notice that the minus side of a tantalum capacitor may
be damaged by heat,

D-99
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to
be focused on the disc reflective surface by the objective
lens in the Optical pick-up block, Therefore, when checking
the laser diode emission, observe more than 30cm away from
the objective lens,
Laser Diode Check Procedure
The laser diode on this set will not emit unless the top
panel is closed and S901 is turned on, The laser diode will
always emit even if focus search is not performed in service
mode,
Procedure 1 (service mode or normal operation)
Check the laser diode emission with the eye.
1, Open top panel,
2, Turn on S901 in Fig. 1,
(In service mode, this operation is not necessary.)
3. Press the Pll key.
(In service mode, this operation is not necessary.)
4, Observe the objective lens and confirm that the
laser diode is emitting light, At this time, the laser
diode goes on about 10 seconds due to focus serarch,
Procedure 2 (service mode or normal operation)
Check by the current with flows in the laser diode,
1, Close the top panel.
2. Remove the main board and read the current value
on the label affixed to the Optical pick-up block,
(Label on Optical pick-up block)
KSS—220A
JAPAN
$123
546
current value
This means 54.6mA,
3. Connect a VOM to TPl and TP2 (both side of R510:
10Q)
. Press the Dil key.
. Calculate the current by the VOM reading,
VOM reading (V) +resistance of R510=current (A)
ex, VOM reading=0,56V
0,56+10=0,056 (A) =56 (mA)
6. Confirm that the ammeter reading is within the
range given below,
value on labelt#,;mA (25°C)
variation relative to temperature :0.4mA//°C
(Current increases when temperature rises and
decreases when it drops.)
or &
SERVICE MODE (service program)
*Step 1 (Service Mode setting method)
1, Turn the HOLD switch to OFF with the external power
supply not plugged in (no power applied to set),
2. Press the Dll key.
3. Solder jumper TEST terminal,
(IC801 pin@ BAT-E is grounded.)
4, Plug in external power supply.
This puts the set into service mode,
*Step 2 (Service Mode operation)
1, When service mode is set, the display will change 6
times, and those 6 changes will be repeated over and
over,
Even if LCD dose not display, other operations will
be performed,
2, When Dp or Kd key is pressed, the optical pick-up block
moves to the inside or outside circumference, Tracking
servo and sled servo go off when this is done, so press
KEY-MODE to turn on the tracking servo if necessary.
3. When REMAIN is pressed, the display stops, When
REMAIN is released, the display continues to change.
This allows check of each segment,
4, When }>lIl Key is pressed, CLV-S (pull-in mode) starts
while performing focus search, When there is no disc
installed, focus search is repeated with rotating disc
motor,
5, When KEY-MODE is pressed, tracking servo, sled servo
and CLV-A (servo during PLAY) go ON,
6. When 4 and 5 are performed, the disc begins to play.
At this time, the top panel should be closed and S901
are to be ON, A sound is not produced as muting is ON,
7, All servo (focus, tracking, sled and spindle) go off when
Mikey is pressed. Disc motor rotate by inertia for a
some time,
Cay,
$901 (OPEN,“CLOSE switch)
PPI Fr)
Optical pick-up block goes to
outside circumference
goes to inside (display stop)
circumference
(FR)
[see
pick-up
a
REMAIN
W@ (STOP)
) (servo all off]
KEY-MODE
Cee servo and
sled servo on
p> II (PLAY/PAUSE)
% Be sure to keep HOLD FOCUS on and CLV-S
switch OFF.|f not, the set ( mode (RUN-UP mode) sie)
cannot receive the input
from each keys. Fig.1
*Step 3 (Service Mode release)
1, First be sure to unplug the external power supply.
2, Then remove the solder jumper TEST terminal,
3, The set will now operated normally,
— 4 —

D-99
@ Explanation of terminals (IC301 CXD8178Q)
Terminal No. |Name of terminal
MLD
RSTB
Descriptions
Micro computer command load input (When L, load)
Reset terminal (L : reset)
When L: Signal processing LSI format When H: FS format
|
E
TP1
Digital
filter
part
test output
terminal
1
TEST
1
Test
signal
input
terminal
1 for
digital
filter
part inspection
Normal:
”L.”
Digital filter part test output terminal 2
TEST 2 Test signal input terminal 2 for digital filter part inspection Normal: ”L”
Zz
o}
oe)
10
11
12
13
14
15
AVop4
OUTL (-)
AVss4
AVss3
OUTL (+)
AVo03
NC
AVoo2
OUTR (+)
AVss2
AVss1
OUTER <=)
AVop1
DVoo1
DVss1
Analog system power terminal 4 (+3.9V)
L ch opposite phase PWM output terminal
Analog system ground terminal 4.
Analog system ground terminal 3
L. ch normal phase PWM output terminal
Analog system power terminal 3 (+3.9V)
17
18
19
0
21
22
3
4
Analog system power terminal 2 (+3.9V)
R ch normal phase PWM output terminal
Analog system ground terminal 2
NO
Analog system ground terminal 1
R ch opposite phase PWM output terminal
Analog system power terminal 1 (+3.9V)
Nn
Digital system power terminal 1 (Power for oscillator)
NO
Digital system ground terminal 1 (Ground for oscillator)
N
ol
Crystal oscillator terminal
we)
(o>)
Crystal oscillator terminal (Outer clock input terminal)
Ph
N ~j
28
)
30
DVoo2 Digital system power terminal 2 (+3.9V)
DVss2
NSUB
ZFLGB
192FS
LRPOL
Digital system ground terminal 2
Connect to D-VDD (Silicon circuit board electric potential fixing terminal)
W
Zero input inspection output terminal (When zero inspection : L)
192FS (=8.4672MHz) output terminal
LRCLK polarity selection input terminal
LRCLK input terminal When LR-POL H, H: L ch data input » L:R ch data input
When LR-POL L, L: L ch data input>H:R ch data input
WwW
2
33
ie)
34 LRCLK
35
6
BCLK
SRDATA
DVss3
DVpp Digital system ground terminal (COM electric potential fixing terminal) (+3.9V)
384FS 384FS (=16.9344MHz) output terminal
Power down terminal (H : power down mode)
Serial input bit clock
W
Serial input data (digital) input terminal
3 Digital system ground terminal 3
W 8
)
hl] @w
oO
MDATA
MCLK
4
—
Micro computer command data input terminal
2 Clock input terminal for micro computer command

D-99
SECTION 3
ELECTRICAL ADJUSTMENTS
Notes on Adjustment
1, Perform adjustments except for BATTERY REMAINS
ADJUSTMENT in service mode,
Be sure to release service mode after completing
adjustment,
(Refer to “Service Mode (service program)” on page 4,)
2, Perform adjustments in the order given,
3. Use YEDS-18 disc (part No, : 3-702-101-01) only indicated,
4, Power supply voltage: DC 9V
HOLD switch : OFF
VOLUME knob: MIN
PREPARATION
Put the set into service mode (See page 4.) and perform
the following checks,
* Sled Motor Check
1, Press the OPEN button and open the top panel.
2. Press the >Wl,l4 keys and make sure that the optical
pick-up block moves smoothly, without catching, from
the inmost—~outmost—inmost circumference,
>I: UPF moves outward
K4: UPF moves inward
*Focus Search Check
1, Press the OPEN button and open the top panel.
2, Press thed{l key. (Focus search is performed continuously.)
3. Observe the UPF objective lens and check that it moves
smoothly up and down with no catching or noises.
4. Press the MM key.
Check that focus search operation stops, If it does not,
press the Mf key again.
Battery Remains Indication Adjustment
Adjustment procedure:
VOM
(DC range)
main board
TP3 (VREF)
TP4 (IC802@)
1, Apply DC 3.5V both side of battery terminal,
2, Insert the disc (YEDS-18) and press the bllkey.
3. Adjust RV801 so that the voltage of TP4 (IC802dD) is
the same as TP3 (V REF),
+3,.9V Adjustment
Adjustment Procedure :
1, Put the set into STOP state service mode (see page 4),
2. Connect the VOM to main board test point TP(+3.9V).
3. Adjust RV401 for 3.95V-4V reading on the VOM.
4, After adjustment, release service mode (see page4),
+3.4V Adjustment
Adjustment Procedure :
1. Put the set into STOP state service mode (see page4).
Connect the VOM to main board test point TP (+3,4V).
Adjust RV402 for 3.45V to 3.5V on the VOM reading,
After adjustment, release service mode (see page 4),
+3.6V Adjustment
Adjustment Procedure :
1, Apply DC 3V both side of battery terminal,
2. Connect the VOM to main board test point TP7
(collector of Q487).
Insert the disc (YEDS-18) and close the top panel.
Press the Dll key.
Adjust RV450 for 3.65V to 3.7V on the VOM reading.
PLL Free Run Frequency Check and Adjustment
Check/“Adjustment Procedure :
= WON
a w
frequency counter
TP (PLCK) ~t,-—
p=
1, Disconnect EFM solder jumper terminal on the main
board,
2, Connect a frequency counter to main board test point
TP8(IC601 @).
3. Put the set into service mode (See page 4),
4, Check that the frequency counter reading is 4,35+0,01
MHz. If not, adjust RV504 so that it is 4,85+0,01MHz,
After adjustment, release service mode (see page4),
6. Short the jumper terminal disconnected in step 1,
main board
ol

Tracking Balance Adjustment
Conditions :
The set should be placed either horizontally.
Adjustment Procedure :
oscilloscpe
(DC_range)
main board
———
TP9 (TE)
vc
Connect the oscilloscope to main board TP9 (IC501@).
Put the set into service mode (See page 4.)
Press the >| and Ké4 keys to move the UPF to the center,
Insert the disc (YEDS-18) and close the top panel.
Press the Dil key.
It will go from focus search to focus on, and CLV
OU AE on
pull-in mode state, Tracking and sled are OFF,
6. Adjust RV502 so that the oscilloscope wavaform is
symmetrical on the top and bottom in relation to OV.
time as lon ossible to obtain best wave-
Note : Take swee as
form.
A A
1-2Vpp OV .
OV B |
A=B Bose
7, -Unplug the external power supply to stop spindle motor
from rotating.
8. After adjustment, release service mode (see page4).
Focus Bias Adjustment
Conditions :
The set should be placed either horizontally.
Adjustment Procedure :
oscilloscope oscilloscope
(DC range) main board (DC range)
main board ye
aati \ca0e fae
TP10 i a a ad TP11 (FE) “T+
ve —__—_———o - ve -
1. Put the set into STOP state in service mode (See page
4),
2. Connect the oscilloscope to main board test point
TP10(CIC501@).
3. Press the bl and Kd key to move the UPF to the center,
(Move the UPF to the music area on the disc to enable
easy visibility of the eye pattern).
4, Insert the disc (YEDS-18) and close the top panel,
Press the Pll key.
or
D-99
6. Press the KEY-MODE button.
7, Adjust RV503 so that the oscilloscope waveform
eye pattern is good, A good eye pattern means that
the diamond shape (©) in the center of the
waveform can be clearly distinguished,
*RF Signal Reference Waveform (eye pattern)
VOLT /DIV : 200mV
TIME/DIV : 500nS
Nain
RANMA
:
Wy "
O
WV
WY
44
RF
level
AYN
|
0,85-1,35V
NN
ue
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
8. Read the voltage on TP1l1 (1C502@),
+20mV to 50mV Adjust RV503 again for +50mV reading on oscilloscope,
+20mV to —20mV Adjust RV503 again for —20mV reading on oscilloscope,
9, Unplug the external power supply to stop spindle
motor from rotating.
Adjust RV503 again refering to the table followed.
10. After adjustment, release service mode (see page 4).
Adjustment Parts Location Diagram
RV801
(Battery Remains Indication
Adjustment
(MAIN BOARD)
—SIDE A-—
RV450
RV401 +3,6V Adjustment
(+3,9V Adjustment) ( sustnent)
RV402
(+3.4V Adjustment)
{ }1C503
ves L_]
1C801 © 16301
RV501 ;
(Tracking Gain Adjustment)
RV502
(Tracking Balance Adjustment)
RV505 .
(Focus Gain Adjustment)
03
(Focus Bias Adjustment)
RV504
(PLL Free Run Frequency Check
and Adjustment)

D-99
Reference
.
CD
jig
connection
:
Focus
Tracking
Gain
Adjustment
Remove
the
solder
jumpers
at
the
TE
and
FE
locations
and
On
this
set,
it
is
very
difficult
to
simplify
this
adjust-
connect
the
CD
jig,
ment,
The
adjustment
procedure
is
described
in
the
separate
CD
A
frequency
responce
analyzer
or
CD
jig
is
necessary
jig
Instruction
Manual,
in
order
to
perform
this
adjustment
exactly,
However,
this
gain
has
a
margin,
so
even
if
it
is
slightly
off,
there
is
no
problem.
Therefore,
do
not
perfrom
this
adjustment,
Focus/
tracking
gain
determines
the
pick-up
followup
(vertical
and
horizontal)
relative
to
mechanical
noise
and
mechanical
shock
when
the
2-axis
device
operate,
*
When
gain
is
high,
the
noise
when
the
2-axis
device
operates
increases,
*
When
gain
is
low,
it
is
more
susceptible
to
mechanical
shock
and
skipping
occurs
more
easily,
,
However,
as
these
reciprocate,
the
adjustment
is
at
the
point
where both are satisfied,
This
adjustment
is
to
be
performed
with
using
when
replacing
the
following
parts:
*
UPF
(optical
pick-up
block)
Adjustment
Parts
Location
Diagram
*
RVSO1
(tracking
gain
volume)
(MAIN
BOARD)
—SIDE
A—
*
RV505
(focus
gain
volume)
cP RNS 02
22K (B)
J801
=
CD jig -
Fig.3

4-1, BLOCK DIAGRAMS
1c501
RF _AMP/SIGNAL
PROCESSER
OPTICAL
PICK-UP
BLOCK. i
KSS~220A
1C303
$30! DBB HEADPHONE AMP
OBB
MAX q (5). PNF
MID <J
w ([R
qj
(13) R OUT
0) L. OUT
§302(2/2)
friones)
RV30I-1
MUTING
Qi02
RCH
J30i °
LINE OUT l Neen
MUTING
Qi01 7
SECTION 4
DIAGRAMS
RV505
RV501
16301 D
MUT
DE EMPHASIS
ala
EMPHASIS SW
142
0302
+3.4V
——
IC502
FOCUS, TRACKING,
SLED/CLV SERVO
Qs03
‘8
ERROR DET
7A CONVERTER
ING
Q604(1/2)
“)
fn
Q502 Q605
CLV SWITCH
G8)
(y (-
oom
H€
+8
(1C301)
iC45'
0
PWM POWER SUPPLY
nN
oO
S
@)
Vv CONT
Q450,Q452
<
Na
>
°o
@)
(veer
(&) ON/OFF
SWITCH
Q453
SWITCH
Q462,463
OSs P
OMnsebd”®
+3.4V
Vv REG
Q407
V REG
Q430,0416
SWITCH
Q416
D408 CONV CONV
hd REG CONT REG CONT
Q406 Q405 Q461 Q464
| Pioas
D459
SWITCH SWITCH SWITCH V REG V REG SWITCH
Q451 Q456 Q457 | | Q4I7 Q431 Q409
4!
_ a ons V_ REG
Q4i8
BP-2 aL BATT
1C504
PWM D
Dc-DC
RIVERS
CONVERTER
FOCUS
COIL
=) TRACKING
coil
M901
SPINDL
MOTOR
M902
SLED
MOTOR
0417
oe
@) CONVERTER 3404
@
SWITCH T
Q801
z
1¢601
DIGITAL SIGNAL
PROCESSER
1_| iC802
RIPPLE
FILTER
0304, 305
|
V DET
Qs0s
08isS
>
| >
VOL CONTROL V DET
Q427~429 Q420
+3.4V
V DET
Q811
BATT LEVEL
DET
a
p>
D803
ao
SWITCH
Q806
MUTE
Q807
SWITCH
0426
PLAY
hy Mone
—O oO
KEY
J302(1/2) MODE
PHONES
oh pp
OO
$808-| ae, |
+ Oo oO—
[HOLD]
ON OFF oO 1
* aL >t
Oo O- L
oS REMAIN
ial
vop 68)
(1) DIRECTION
24
(5) sack A
(2) LATCH
(6) DATA 6s
r
SWITCH
Q803
ND801
tcp
1¢801
SYSTEM
CONTROL
XTAL (0)
(5) sToP
EXTAL @1)
(9) K REM
S$ DOOR (21)
RESET
1€804,Q809
me x3801
$901
Y
SWiTCH
aso4
B+
D816~821
tq 82
LCO BACK
LIGHT
J801
TS

42.
PC
BOARD“SWITCH
MOTOR
LAYOUTS
LDC module
(ND801) main board
door switch
($901)
HOLD
switch
contorol
board
(S808)
optical pick-up block CUPF)
KSS-220A
sled motor
(M902)
limit switch
($902)
spindle motor
(M901)
e LCD MODULE
COMMON
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PALA
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