Pioneer DEH-59 User manual

d) PIONEER’
The Art of Entertainment
Service
Manual
HIGH POWER CD PLAYER WITH FM/AM TUNER
DEH-59/UC
ORDER NO.
CRT1809
DEFH-S9o
..
DEH-52 uc
DEH-525 uc
DERH-49 .-
DEH-4e uu
DEH-425
DEH=-225
uc
DEHM-5e23 ES
DEH-Se23 cs:
DEH-223 cs
COMPACT
DIGTA L AUDIO
@
See
the
service
manual
CX-597(CRT1811)
for
the
CD
mechanism
description,
disassembly
arsd
circuit
description.
@
The
CD
mechanism
employed
in
this
model
is
one
of
CX-597
series.
PIONEER
ELECTRONIC
CORPORATION
4-1,
Meguro
1-Chome,
Meguro-ku,
Tokyo
153,
Japan
PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER
ELECTRONIC
[EUROPE]
N.V.
Haven
1087
Keetberglaan
1,
9120
Melsele,
Belgium
PIONEER
ELECTRONICS
ASIACENTRE
PTE.LTD.
501
Orchard
Road,
#10-00,
Lane
Crawford
Place,
Singapore
0923
© PIONEER ELECTRONIC CORPORATION 1995
K-FFD. NOV. 1995 P inteed in Japan

DEH-59,52,525,49 ,42,425,225,523,323,223
CONTENTS
1. SAFETY INFORMATION ........csscsssssesssssseesseeressenseeers 2 8. ELECTRICAL PARTS LIST ........csscsssssssseverssenenseecesees 23
2. SPECIFICATIONS. .........cscsessssssssssensesresssseesseesseatenesenees 3 De EC Diet atch cascades whe cccresbagitedecuucecsteeses sete acesoueylhoteveesnsa 28
3. OPERATION AND CONNECTION. .....cccscssscssssseenseeees 4 10. BLOCK DIAGRAM .........csccsssssessssesssesessenssensenenensens 29
4. DISASSEMBLY ......ssccescseseeresees Psat ices sdsubedeusesessicesteeds 7 11. CIRCUIT DIAGRAM AND PATTERN .........sssssseeereeee 34
B. ADJUSTMENT.........sssscsssssesssseesreessesesssesenseneeseeaenenees 8 12. EXPLODED VIEW AND PARTS LIST ........ssesssssseseees 53
6. TEST MODE........ccscsssccsscccsssescnssescescseessssseeeseesseaeenes 10 13. PACKING METHOD ..........cscesscssssssscnseesesorseneerseneenees 60
7. IC INFORMATION ........ccsssssssssssrscssensesenesssersesenseensns 14
@ CD Player Service Precautions
1. For pickup unit(CGY1070) handling, please refer
to"Disassembly"(CX-597 Service Manual CRT1811).
During replacement, handling precautions shall be
taken to prevent an electrostatic discharge(protection
by a short pin).
2. During disassembly, be sure to turn the power off
since an internal IC might be destroyed when a con-
nector is plugged or unplugged.
1. SAFETY INFORMATION
CAUTION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair
complex products such as those covered by this manual. ;
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.
If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so and
refer the repair to a qualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxi-
cant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin
contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.

DEH-59,52,525,49,42,425,225,523,323,223
2. SPECIFICATIONS
General
Power
SOULCE
2...
cece
cece
eee
tenes
14.4
V
DC
(10.8
—
15.1
V
allowable)
Grounding
system
..........
cc
cece
ccc
eee
e
tenner
een
eee
eens
Negative
type
Max.
current
CONSUMPTION
.........
0.
cece
cee
cee
tee
eee
eee
ene
e
ene
eens
10.0A
Dimensions
(DIN) (chassis) ............006- 178 (W) x 50 (H) x 150 (D) mm
[7 (W) x 2 (H) x 5-7/8 (D) in.]
(MOSE) .... ccc cece cence eee 188 (W) x 58 (H) x 22 (D) mm
[7-3/8 (W) x 2-1/4 (H) x 7/8 (D) in.]
(D) (chassis) ..............-. 178 (W) x 50 (H) x 155 (D) mm
[7 (W) x 2 (H) x 6-1/8 (D) in.]
(NOSE) os eee eeean sas eae’e 170 (W) x 48 (H) x 17 (D) mm
[6-3/4 (W) x 1-7/8 (H) x 5/8 (D) in.]}
WEIght:
cc
ussceetecwls
ita
sateen
ad
seadine
etisalat
wedeisaa
aes
1.5
kg
(3.3
Ibs)
Amplifier
Continuous
power
output
is
15
W
per
channel
min.
into
4
ohms,
both
channels
driven
50
to
15,000
Hz
with
no
more
than
5%
THD.
Maximum
power
OUtPUE
0.0.00...
cece
cee
ener
e
nent
eee
nese
nee
enes
35
Wx4
Load
impedance
...........
cece
cece
eee
eee
e
eens
4Q
(4—8
Qallowable)
Preout
output
level/output
impedance
..............
sees
ee
seen
500
mV/
1kQ
Tone
controls
(Bass)
:s
ocstee
ahh
te
bees
sa
ale
Date
Meneses
aia
pe
tnede
+12
dB
(100
Hz)
(Treble)!
sic
cise
cree
nesters
a
sgeltvn
esi
eee
se
Tats
«aoe
we
+12
dB
(10
kHz)
Loudness
contour
............
eee
eeee
eee ees
+10
dB
(100
Hz),
+7
dB
(10
kHz)
(volume:
—30
dB)
CD
player
SyStOM
0.0...
secs
ee
ceenne
esc
n
see
eeenenseeneneees
Compact
disc
audio
system
Usablé
discs
ic
ecccie
caced
sctuiie
onatat
ete
eainelieedie'e
setae
een
Compact
disc
Signal
format
...........
0...
cee
e
ee ee
eee
ee
eee eee
Sampling
frequency:
44.1
kHz
Number
of
quantization
bits:
16;
linear
Frequency
characteristics
............ccee
eee
e
neon
eeees
5
—
20,000
Hz
(+1
dB)
Signal-to-noise
ratio
2.0.00...
cece
eee
eee
eens
94
dB
(1
kHz)(IHF-A
network)
Dynamic
range
0.0...
ccc
cece
eee
eee
e
ence
eee
nee
e
ee
nennes
90
dB
(1
kHz)
Number
of
channels
..........-
00sec
ece eee
e
cece
eee
e
een
ence
nen
enns
2
(stereo)
FM
tuner
Frequency
range
(UC).........
0.
cece
cee eee
eee
e
eee
ene
enes
87.9
—
107.9
MHz
Frequency
range
(ES)
........
0.
ccc
cece
eee
e
eee
eee
e
eee
eneeee
87.5
—
108
MHz
Usable
sensitivity
................0005
11
dBf
(1.0
V/75Q,
mono,
S/N:
30 dB)
50 dB
quieting
sensitivity
.............ccc
cee
ee
eens
16
dBf
(1.7
V/75Q,
mono)
Signal-to-noise
ratiO
.....
0...
cece
eee
e
cence
ence
eens
70
dB
(IHF-A
network)
DistOrtion:
isd4s008
bien
eds
So
tas
ae
vee
beac
0.3%
(at
65
dBf,
1 kHz,
stereo)
Frequency
response
..........
00sec
cece
cece
ence
eee
30
—
15,000
Hz
(
3
dB)
Stereo
separation
.........
ccc
c
eee
cece
cence
een
e
eens
40
dB
(at
65 dBf,
1
kHz)
Selectivity
ss.
civic
oh
aien
ceetoyes
ova
eee.
eas
ons
aae
wens
...
70 dB
(2ACA)
Three-signal
intermodulation
(desire
signal
level)
............
50 dBf
(two
undesire
signal
level:
110
dBf)
AM
tuner
——————————————
Frequency
range
(UC,
ES)
.........
ccc
ccc
cece
eee
e
ene
eens
530
—
1,710
kHz
Frequency
range
(ES)........
0...
cece
eee
cee cece
ete
c
enc
eenens
§31
—
1,602
kHz
Usable
sensitivity
............
0...
eee
e
eee
eee
ee
eee
18
V
(25
dB)
(S/N:
20 dB)
Selectivity’.
cccia
suas
ita
giens
nde stldvese
ie
sewselveu
lee
tees
50
dB
(
10
kHz)
Note:
Specifications
and
the
design
are
subject
to
possible
modification
without
notice
due
to
improvements.

DEH-59,52,525,49,42,4025,225,523,323,223
3. OPERATION AND CONNECTION
Tuner Operation
Tuner Source and Band
¢ Push the SOURCE button or the Tuner
button to select Tuner.
The Frequency appears on the display.
(“CD” indicator lights when stereo station
selected.)
¢ Use the BAND button to select the desired
band.
(FM1, FM2, FM3, AM)
Manual and Seek Tuning
Both Manual (step-by-step) and Seck
(automatic) tuning are available.
1. Press the MANU button to switch alternately
between the Manual and Seek tuning modes.
The “MANU” indicator lights when Manual
tuning is selected and turns OFF when Seek
tuning is selected.
2. Press the (>) button to tune the receiver to a
higher frequency.
MANU ON (Manual tuning):
The frequency changes step by step.
MANU OFF (Seek Tuning):
The tuner automatically seeks out and receives
broadcasting stations.
¢ Press the (4) button to tune the receiver to a
lower frequency.

DEH-59,52,525,49,42,425,225,523,323,223
Using the Built-in CD Player
The built-in CD player plays one standard 12
cm or 8 cm (single) CD at a time. Do not use an
adapter when playing 8 cm CD.
Inserting and Removing Discs
* Insert the disc with the recorded (iridescent)
surface down.
CD playback begins immediately, whether or
not the player is ON or the built-in CD source
selected. The track number and playing time are
displayed.
* Press the Eject button to eject any disc
loaded in the disc slot.
Playing the Built-in CD player
* To play a CD that is already loaded, press the
SOURCE or CD button with a CD loaded to
select the built-in CD player.
The built-in CD player is selected only when a
CD is loaded.

DEH-59,52,525,49,42,425,225,523,323,223
@ Connection Diagram
1
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sayldwe
eyqejeae
Ajeyes
seoy
1
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NOA
UEyM
t
SUOIJIOUUOD
10}
S14)
OS;
®@
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ye!
4
SIU
OSN)
Yj]
10
JOY
OY)
UI
BI
-yeeds
Z
ey)
03
eUUOD
i
‘waysks
Jeyeeds
Z
&
UNIAA
1
i
Jeoy
;
408)
t
sepjoy esny
quoi
seyeeds
yyBry
(punod6)
x2e1g
(30
AZL
VW
OO
“xeW)
*JEUIUIB} (01)
-uoo
Aejas
PuuajuR-ojny
40 dwe seMod ey) Jo jeu yore! euusjuy
1148} ]02]U09 Weyshs OF
(Ajeyesedas
pjos)
sBnid uid yoy YM
spso2 Bunjoeuuo3
a wun siyt
INdyno sea’
— o 401S1S91 BSN
yndyno
quoi
‘uontsod yo}ims uontuB:
30 $se)pse6e1 1aMod YUM
Patyddns sAemye jeuiu9; of dSO/NO
{90
A
ZL)
Yous
UoRtUB)
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B1yDe}e
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“Apog
(Je1eus)
8PD1YeA
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*uoneyeysuy
UeTY S4d. UONDeS BY) 88S

DEH-59,52,525,49,42,425,225,523,323,223
4. DISASSEMBLY
@ Removing the Case(Not shown)
1.Remove the two screws.
2.Insert and turn a flat screwdriver at locations indicat-
ed by arrows to remove the case.
@ Removing the Detach Grille Assy(Fig.1)
{ Except for DEH-225/UC and DEH-223/ES)
1.Press the detach button, and then pull detach grille
assy.
@ Removing the Panel Assy(Fig.1)
( Except for DEH-225/UC and DEH-223/ES)
1. Disconnect the two stoppers indicated by arrows, and
then remove the panel assy.
@ Removing the CD Mechanism Module(Fig.1,2)
1.Remove the four screws.
2. Disconnect the connector.
3.Remove the CD mechanism module.
Detach Button
Fig.1
@ Removing the Grille Assy(Fig.2)
(DEH-225/UC and DEH-223/ES)
1. Disconnect the connector.
2.Disconnect the two stoppers indicated by arrows, and
then remove the grille assy.
> CD Mechanism Module
Grille Assy
Fig, 2
@ Removing the Chassis Unit(Fig.3 }
1.Remove the screw A, two screws B, screw C and two
screws D.
2. Stretch the claw.
3.Remove the two cords, and then remove the chassis
Unit.
Fig. 3

DEH-59,52,525,49,42,425,225,523,323,223
5. ADJUSTMENT saat
Select C1 so that total capacity of 80pF is attained from
the direction of the receiver jack.
Z: Output impedance of SSG.
@ Connection Diagram
DC Regulated
Power Supply
FM/AM TUNER UNIT (TOP VIEW)
TUNER AMP UNIT
FM/AM TUNER UNIT
DCV
Meter(1)
Pint
FM/AM TUNER UNIT (BOTTOM VIEW)
Peenee:
Fig. 4

DEH-59,52,525,49,42,4025,225 523,323,223
FM ADJUSTMENT(UC MODEL)
Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.)
S:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.)
NOTE:Before
proceeding
to
further
adjustments
after
switching
power
ON,
let
the
tuner
run
for
ten
minutes
to
allow
the circuits to stabilize.
a. ami SSS a Displayed Adjustment Method
Frequency(MHz) | Point (Switch Position)
[ee
Lome
T1079
|
SS
CV
Meter(t):ev
1
|
saim
|
60
|
981
|
151
_—‘|CenterMeter:0
antcoi|1 | 981m | 5 «| 98.1 | 2 | mv Meeter(1): Maximum
nh
|
caim
|
5
|
gat
|
Sa
mv
Meter(t):
Maximum
Bhd
ae
lt
ioe mV Meter(1): Maximum
(STEREO MODE)
VR154 mV Meter(1) : Separation 5dB
(STEREO MODE)
FM SSG Displayed
Adjustment Method
Level(dBf) Frequency(MHz) | Point (Switch Position)
run
voit
[1
[see
[oso
|
ts
CV
Meter(ty:6v
a=
2
Wee)
ai
el
| 98.1 M__|
a al ee
| tee | f
ae eee ae ee
ee 7:
ee ee
a
el
a
aa
(STEREO
MODE)
Loe VR154 mV Meter(1) : Separation 5dB
(STEREO MODE)
L5 :
;
: Maxi
T31 : i

DEH-59,52,525,49,42,425,225,523,323,223
6. TEST MODE
6.1 TEST MODE
1)Precautions
- This unit uses a single power supply (+5V) for the reg-
ulator. The signal reference potential, therefore, is
connected to REFO(approx. 2.5V) instead of GND.
lf REFO and GND are connected to each other by mis-
take during adjustments, not only will it be impossi-
ble to measure the potential correctly, but the servo
will malfunction and a severe shock will be applied to
the pick-up. To avoid this, take special note of the fol-
lowing.
Do not connect the negative probe of the measuring
equipment to REFO and GND together. It is especially
important not to connect the channel 1 negative
probe of the oscilloscope to REFO with the channel 2
negative probe connected to GND.
Since the frame of the measuring instrument is usual-
ly at the same potential as the negative probe, change
the frame of the measuring instrument to floating sta-
tus.
lf by accident REFO comes in contact with GND,
immediately switch the regulator or power OFF.
- Always make sure the regulator is OFF when connect-
ing and disconnecting the various filters and wiring
required for measurements.
: Before proceeding to further adjustments and mea-
surements after switching regulator ON, let the player
run for about one minute to allow the circuits to stabi-
lize.
- Since the protective systems in the unit's software are
rendered inoperative in test mode, be very careful to
avoid mechanical and /or electrical shocks to the sys-
tem when making adjustment.
- Test mode starting procedure
Switch ACC, back-up ON while pressing the 4 and 6
keys together.
10
- Test mode cancellation
Switch ACC, back-up OFF.
+ Disc detection during loading and eject operations is
performed by means of a photo transistor in this
unit.Consequently, if the inside of the unit is exposed
to a strong light source when the outer casing is
removed for repairs or adjustment, the following mal-
functions may occur.
*During PLAY, even if the eject button is pressed, the
disc will not be ejected and the unit will remain in
the PLAY mode.
*The unit will not load a disc.
When the unit malfunctions this way, either re-posi-
tion the light source, move the unit or cover the
photo transistor.
+ When loading and unloading discs during adjustment
procedures, always wait for the disc to be properly
clamped or ejected before pressing another key.
Otherwise, there is a risk of the actuator being
destroyed.
+ Turn power off when pressing the button TR+ or the
button TR- key for focus search in the test mode. (Or
else lens may stick and the actuator may be dam-
aged.)
+ SINGLE/4TRK/10TRK/32TRK will continue to operate
even after the key is released.Tracking is closed the
moment C-MOVE is released.
- JUMP MODE resets to SINGLE as soon as power is
switched off.