Philips FR752/00 User manual

Dolby Prologic AV Receiver FR752/o0
CPMRVOWEE Gert tied metms ne creat meses eee senee Woe
Service
Service
Service
CONTENT PAGE
Safety 1
Controls - Front 2
- Remote Control 3
Installation 4
Block Diagram 5
Wiring Diagram 6
Specifications 6
Radio Alignment 7
Tuning Board - Circuit Diagram 7
- Layout Diagram 8
Front Board - Circuit Diagram 9
- Layout Diagram 10
Main Board - Circuit Diagram 11
- Layout Diagram 12
Power Supply Board - Circuit Board 13
- Layout Board 14
Service Test Program 15 - 16
Exploded View Diagram 17
Electrical Partslist 18 - 20
Published by Philips Consumer Electronics Printed in the Netherlands ©Copyright reserved Subject to modification 4822 725 25567
PHILIPS |
E
PCS 87 105

HANDLING CHIP COMPONENTS
GENERAL
Cl
COMPONENT
SERWCE PACKAGE
WARNING
All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD). Careless handling during
repair can reduce lite drastically.
When repairing, make sure that you are connected with
the same potential as the mass of the set via a wrist wrap
with resistance. Keep components and tools at this
potential.
CF) ATTENTION
Tous les iC et beaucoup d'autres semi-conducteurs sont
sensibles aux décharges statiques (ESD). Leur longévite
pourrait étre considérablement écourtée par le fait
qu‘aucune précaution nést prise a leur manipulation.
Lors de réparations, s‘assurer de bien étre relié au méme
potentiel que la masse de I’appareil et enfileer le bracelet
serti d'une résistance de sécurité.
Veiller & ce que les composants ainsi que les outils que
l'on utilise soient également a ce potentiel.
Anti-static table matiarge1200x650x1.25mm
small 600x650x1.25mm
Anti-static wrist band
Connection box ({MOhm)
Extendible cable (to connect wrist band to conn. box)
Connecting cable (to connect table mat to conn. box)
Earth cable (to connect any product to mat or box)
Complete kit ESD3 (combining all above products)
Wnstband tester
Atter servicing and before returning the set to customer
perform a l@akage current measurement test from ail
exposed metal parts to earth ground, to assure no shock
hazard exists
The leakage current must not exceed 0.5mA.
“Pour votre sécurte, ces documents doivent étre utilisés
par des spécialistes agrées, seuls habilités a réparer votre
appareil en panne’.
PCS 87 032
HIP
SOLDER SOLDER
7~ COPPER TRACK
P08,
GLUE
{| DISMOUNTING
VACUUM PISTON
822 395 10082
| og WELLER
soider tip PT-H7
SOLDER WICK
4822 32] 40042
e.g. A PAIR OF TWEEZERS
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HEATING HEATING §=B
SOLDERING
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A
SOLDER
[email protected] 0.8mm
PRESSURE
SOLDERING TIME SOLDER 8
@0.5~0.8mm
PRESSURE
MOUNTING
ag. A PAIR OF TWEEZERS
Miy
SOLDERING
IRON
‘SOLDERING
1RON
CLEANING
SOLDER WICK "a c
PRECAUTIONS ]
SOLDERING
IRON,
Ni x CORRECT
COPPER TRACK
SOLDERING
XN <
ora Las
ESD
7 «&
(2) WARNUNG
Alle {Cs und viele andere Halbleiter sind empfindlich
gegenuber elektrostatischen Entladungen (ESD).
Unsorgfaltige Behandlung im Reparaturfall kann die
Lebensdauer drastisch reduzieren.
Sorgen Sie dafur, dab sie im Reparaturfall iiber ein Puls-
armband mit Widerstand mit dem Massepotential des
Gerates verbunden sind.
Halten Sie Sauteile und Hilfsmittel ebenfalls auf diesem
Potential.
4822 466 10953
4822 466 10958
4822 395 10223
4822 320 11307
4822 320 11305
4822 320 11306
4822 320 11308
4822 310 10671
4822 344 13999
Safety regulations require that the set be restored to its
originial condition and that parts which are identical with
those specified be used.
Safety components are marked by those symbol. rN
Varning !
Csyniig laserstraining nar apparaten ar oppnad och
sparren ar urkoppiad. Setrakta ej straien.
Advarsel !
Usynig taserstraling ved abning nar sikkerhedsafbrvdere
er ude af funktion. Undga udsaettelse for straling.
Varoitus !
Avatussa laitteessa ja suojalukituksen ohitettaessa oiet
aittina nakymattomalle laserisateily!ie. Ala katso
sateeseen!
1-1
EXAMPLES
CORRECT
CNL) WAARSCHUWING
Alle IC’s en vele andere halfgeleiders zijn gevoelig voor
electrostatische ontladingen (ESD).
Onzorgvutdig behandelen tijdens reparatie kan de
levensduur drastisch doen vermindern. Zorg ervoor dat u
tidens reparatie via een poisband met wererstand
verbonden bent met hetzelfde potentiaal ais de massa van
het apparaat.
Houd componenten en hulpmiddelen ook op ditzelfde
potentiaal.
C1) AVVERTIMENTO
Tutti IC e parecchi semi-conduttori sono sensibili alle
scariche statische (ESD).
La loro longevita potrebbe essere fortemente ridatta in
caso di non osservazione della pit grande cauzione alla
loro manipolazione. Durante le riparationi occorre quindi
essere collegato allo stesso potenziale che quello della
massa delapparecchio tramite un braccialetto a
resistenza.
Assicurarsi che i componenti e anche gli utensili con quali
si lavora siano anche a questo potenziale.
WARNING
Safety regulations require that the set be restored torts
original condition and that parts which are identical with
those specified be used.
CF ATTENTION
Les normes de sécurité exigent que l'appareil soit remis a
état d'origine et que soient utilisées les piéces de
rechange identiques a celles spécifiées.
(D> WARNUNG
Bei jeder Reparatur sind die geitenden Sicherheitsvor-
schriften zu beachten. Der Originaizustand des Geraies
dart nicht verandert werden. Fur Reparaturen sind
Criginal-ersatzteile zu verwenden.
CNL) WAARSCHUWING
Velligheidsbepalingen vereisen, dat het apparaat in ajn
corspronkeliijke toestand wordt teruggebracht en dat
onderdeien, identiek aan de gespecificeerde, worden
toegepast.
C1> AVVERTIMENTO
Le norme di sicurezza estigono che |‘apparecchio very a
nmesso nelle condizioni orginali e che siano utilizzat i
pezzi di ricambiago identici a quelli speciticati.

CONTROLS - FRONT
FRONT
1
2
POWER ON/STANDBY
For switching on to last mode and for switching off.
A SPEAKERS B
A - For switching on and off a pair of speakers connected to
the SPEAKER A terminals.
B - For switching on and off a pair of speakers connected to
the SPEAKER B terminals.
PROGRAM
For storing preset stations.
SURROUND
For selecting the surround modes:
DOLBY PRO LOGIC, DOLBY 3 STEREO, HALL, OFF.
Dolby Surround manufactured under license from Doiby Laboratories
Licensing Corporation. ‘Dolby’ and the double D symboi OU are trademarks of
Dolby Laboratories Licensing Corporation
TUNING/PRESET
For selecting the frequency or channel mode.
DISPLAY
Informs you about the functioning of the receiver.
RDS MODE CONTROLS (for FM only)
DISPLAY button: For changing the display mode
RDS button: To turn the RDS mode ON or OFF
AF button: To tune automatically to the frequency with the
strongest signal for optimum reception of a
RDS station
PTY button: To select the RDS station broadcasting the
desired programme type (PTY)
UP/DOWN
For adjusting the station frequency.
For selecting the next or previous tuner preset.
linfra) Ried) SENSOR
Infrared remote control eye for receiving signals from the
remote control.
10 TREBLE
For adjusting the high tones (use together with the
VOLUME/TONE/BALANCE control 12).
2-1
11 BALANCE
For adjusting the balance of the volume between the left
and right channels (use together with the
VOLUME/TONE/BALANCE control 12).
12 eV OEE TONE BALANCE
VOLUME - For adjusting the volume.
— TONE - For adjusting the high tones and the bass tones
(use together with the TREBLE 10 and BASS 14 controls).
- BALANCE - For adjusting the balance of the volume
between the left and right channels (use together with
BALANCE button 11).
13 VCR 2 AUDIO/VIDEO INPUT
Connections for an extra VCR or camcorder (VIDEO) or an
extra audio source (AUDIO).
14BASS
For adjusting the bass tones (use together with the
VOLUME/TONE/BALANCE control 12).
15 SOURCE SELECTION KEYS
For selecting the required audio or video source.
16 POWER STANDBY LED
— Lights up when in stand by mode
- Flashes when MUTE is active
17 PHONES
For connecting headphones.
PCS 87 106

CONTROLS - REMOTE CONTROL
i. DOLBY
: ‘
‘-- SURROUND CONTROL ~~~
23 a .
AMPLIFIER
1 STANDBY - for switching to standby.
4 VOLUME+VOLUME- - for adjusting the volume
14 Source selectors
17 MUTE — for muting the volume.
19 SLEEP — for setting a time period after which the system
will automatically be switched to standby
Surround processor
11 REAR LEVEL +/- — for adjusting the rear level.
12 TEST TONE — for checking the output level of the front,
centre and rear speakers
13 DELAY — for adjusting the delay time of the rear channel
21CENTER MODE - for selecting the desired centre mode
when in Dolby Pro Logic or Dolby 3 Stereo mode
22 CENTER LEVEL +/- — for adjusting the centre level {only in
normal mode or wide mode)
23 SURROUND CONTROL
— DU PRO LOGIC, 3 STEREO, HALL - for selecting the
different surround modes
—
SURR(ound)
OFF
-
for
switching
the
surround
mode
off
TUNER
1 STANDBY - for switching to standby
6 FR(equency) DIRECT — for direct tuning to the station
frequency
8 DISPLAY:
~
Indicates
the
frequency,
the
signal
level,
the
Programme
Service name, the Program Type and the clock time in
RDS mode.
~
indicates
the
frequency,
the
signal
leve!
in
FM
non-RDS
mode
PCS 87 107
150-9 digit keys — for selecting preset stations and frequency
direct mode
16 MONO/ST — for mono/stereo selection
18 CHANNEL/TRACK - next Pi or previous @ preset station
20 << &P —- for tuning up and down
TAPE
1 STANDBY - for switching to standby
2 DECK A/DECK B - for selecting deck A or B
5 PLAY & - for starting play
6 SIDE - for selecting tape side A or B
7 STOP g - for stopping recording/play
9 PAUSE II - for interrupting recording/play
18 CHANNEL/TRACK — next PI or previous track
20<4< BP - for winding the tape
VCR 1 and VCR 2
1 STANDBY - for switching to standby
5 PLAY P - for starting play
7 STOP - for stopping recording/play
9 PAUSE Hi - for interrupting recording/play
150-9 digit keys — for selecting stations
18 CHANNEL/TRACK — next B! or previous kd station
20 << && — for winding the tape
C D and V-CD/CD-i
STANDBY - for switching to standby
DISC + - (CD changer only) - for disc selection
PLAY ® - for starting play
STOP m - for stopping recording/play/clearing a progremme
DISPLAY - for displaying the elapsed playing time andthe
remaining playing time
9 PAUSE II — for interrupting recording/play
150-9 digit keys — for track selection
18 CHANNEL/TRACK — next PB or previous ke track
20 <4<4 BP — for searching up and down
ON UN =
TV
1 STANDBY - for switching to standby
3 TXT - for switching teletext on and off
5 PLAY & - enlarge picture
7 STOP @ - hold picture
8 DISPLAY - for selecting on screen display
9 CANCEL - cancel teletext
10 VOLUME TV - for adjusting the volume
150-9 digit keys — for selecting preset stations
16-/---— 1 or 2 digit entry
18 CHANNEL/TRACK — next Bi or previous k@ channel
20 PAGE + /PAGE - - next or previous teletext page
DCC
STANDBY - for switching to standby
DECK A/DECK B - for selecting deck A or B
PLAY PB - for starting play.
SIDE — for selecting the tape travel direction
STOP @ - for stopping recording/play
DISPLAY
-—
for
displaying
character
information
(e.g.
tile
names
etc.)
9 PAUSE It - for interrupting recording/play
150-9 digit keys — for track selection
18 CHANNEL/TRACK — next or previous Md track
20 <4 &P — for winding the tape
On AON =
Nace

INSTALLATION
You only have to install your system once.
Please make the following connections (whenever applicable).
NOTES!
— SWITCH OFF THE RECEIVER BEFORE MAKING ANY
CONNECTIONS.
— Do not connect the set to the mains when making
connections.
— Be sure to connect the white plugs to the L (left) and the red
plugs to the R (right) sockets when making connections.
CONNECTIONS
‘Important note for connecting equipment that does not —
have PLAY/REC markings on the input and output
sockets:
“FR752
Device to be connected e.g. cassette deck.
“PLAY > PLAY or OUT
REC or IN
“REC >
AFM (75 Q)
The FM (75 Q) socket is used for connection to the Commu-
nity or Cable Antenna System or to a roof-mounted FM
antenna with an impedance of 75 ohms. If none of these are
available, you may use the wire supplied for nearby stations
(reception could be poor).
B GND/AM
For AM reception, connect the supplied wires to the GND
and AM antenna terminals (one wire to GND and one wire to
the AM terminal) and position the antenna for best
reception.
Note: Do not place the AM loop antenna on the unit, as this unit
employs a computing device which could cause interference.
C DCC PLAY/REC - input and output sockets for connecting a
a Digital Compact Cassette deck or another digital recording
device.
-— CD/V-CD/CD-i IN — input sockets for connecting a CD
(Compact Disc) player or a V-CD/CD-i player.
© Connect these sockets to the OUTPUT sockets of the (V)
CD player.
— TV/AUX IN - input sockets for connecting the sound channel
of a TV set or any other source you want to hear; an additional
CD player, a cassette deck, a VCR or a turntable with ceramic
cartridge etc.
~— TAPE PLAY/REC - input and output sockets for connecting
a cassette deck.
* Connect the PLAY sockets to the LINE OUTPUT sockets
of the cassette deck. 4-4
Connect the REC sockets to the LINE INPUT sockets of
the cassette deck.
— VCR 1 PLAY/REC - input sockets for connecting the sound
channel of a video recorder and output sockets for extra sound
recording equipment (e.g. a HiFi stereo video recorder, or
cassette, or tape deck).
* Connect the PLAY sockets to the OUTPUT sockets of the
VCR.
¢ Connect the REC sockets to the INPUT sockets of the VCR.
— REAR L/R - output scckets for connecting a separate power
amplifier for future upgrading flexibility.
— CENTER - output socket for connecting a separate power
amplifier for future upgrading flexibility.
D VIDEO IN/OUT
~ VCR 1 IN/OUT — input and output sockets for connecting
the video input and output of a video recorder
~ MONI/OUT - output sockets for connecting to the video
input of a video TV set.
E SURROUND SPEAKERS
Terminals for connecting a pair of surround speakers,
impedance of 8 Q each, to obtain a surround sound effect.
NOTE: Always connect two speakers to these terminals.
SPEAKER POSITIONING
F CENTRE SPEAKER
Terminals for connecting a centre speaker.
G FRONT SPEAKERS A/B
Terminals for connecting two pairs of speakers, impedance
6-16 ohms (L = left, R = right).
¢ One of the wires of a loudspeaker cable is marked with a
colour or rib. Connect the marked wire to the red terminal,
the non-marked wire to the black one.
Make sure that all loudspeakers are connected in the
same way.
H SYSTEM CONTROL
RC-5 (coloured orange) — remote-control input/output socket
for connection to the corresponding RC-5 socket of a CD
(Compact Disc) player or a remote control receiver etc..
Connect the RC-5 socket to the RC-5 socket of the external
equipment that uses the RC-5 remote control system.
This socket has been added to maintain compatibility with
other Philips Audio equipment.
POWER
| SUBWOOFER OUT
For use with an externally powered subwoofer (not supplied)
For details, please refer to the subwoofer’s owners manual.
J MAINS LEAD
For connecting the set to the mains.
K MAINS OUTLETS
Switched mains output for connecting mains plugs from
various units such as cassette deck, CD player, etc.
(maximum capacity is 100 W).
Power supplied through this outlet is turned on and off by
the POWER button of the receiver and STANDBY button on
the remote control.
CONNECTING HEADPHONES
e Connect headphones with a 6,3 mm
plug to the PHONES socket.
— Inserting the plug will not disconnect
the loudspeakers.
To get the best surround sound effect in your home, place the
speakers as shown below.
The left and right speakers should be about 1 m. (40") from the
TV set.
The centre speaker should be above or below the TV set.
The rear speakers should be placed at normal listening ear level.
Note: to avoid interference with the TV picture, use only
magnetically shielded speaker systems.
\ SPEAKER
SURROUND
RIGHT
SURROUND
LEFT
After making all necessary connections (some may not be
applicable for your system set-up), your system is ready for
use. In the next chapter we will describe how to operate your
FR 752 receiver.
PCS 87 108

BLOCK DIAGRAM
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WIRING DIAGRAM
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TUNER (PCB1)
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SPECIFICATIONS
GENERAL
Main voltage
Main frequency
Battery (remote control)
Power Consumption
Dimension (W x H x D)
Weight
AMPLIFIER
RMS Output power Main
Center
Rear
Speaker impedance Main
Center
Rear
Frequency response Main
Center (PRO-LOGIC)
Rear (PRO-LOGIC)
Tone control Bass at 100Hz
Treble at 10KHz
Channel seperation 1KHz
CD/TAPE sensitivity
TUNER - FM section
Tuning range
IF frequency
Sensitivity
Selectivity
IF rejection
Image rejection
Auto search stop sensitivity
Srereo seperation 1 KHz
TUNER - AM section
Tuning range
IF frequency
Sensitivity
Selectivity
IF rejection
Image rejection
Auto search stop sensitivity
: 230V
: 50HzZ
: 3V(RO3G x 6)
> 140W
> 435 x 125 x 350 mm
> 10 kg
> 2x50W
: 35W
: 2x 15W
: 2x8Ohm
: 8 Ohm
: 2x16 Ohm
: 20 Hz - 40 KHz
: 50 Hz- 15 KHz
: 100 HZ -6 KHz
: 12 dB
: 12 dB
: 35 dB
: 200mV
: 87.5 -108MHz
> 10.7MHz
: < 20 dBf at 26 dB S/N
: > 40 dB at 600 Khz B.W.
: >70dB
: >70dB
: > 34 dBf
: >28dB
: 522 -1611KHz
: 450 KHz
: < 1000 pV/m at 20dB S/N
: >20dB
: >30dB
: >28dB
> < 1585 yV/m
PCS 87 110

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IC200 : uPD 78044AGF (8bit CMOS Microprocessor) 2. or Matrix
1.
Pin
Configuration
K.
SCANS
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SCAN4
K. SCANS | K. SCANG | K. SCAN7 | K. SCAN8
PIN64 PIN65 PIN66 PIN67
PIN62 PIN63
FIP DRIVE TUNING VCR1 FM TAPE
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SERVICE TEST PROGRAM - uPD78044AGF
4. Input/Output Terminal Functions
[PinNo.[
Symbol
[Description
SSCS
8
[Von
|
+5V
powersuppy.
SSS
11/12
CLK/DATA
CLOCK/DATA
output
for
TDA7313,
TC9176,
NJU9701,
LC7821,
LM7001
and
MC
14094.
LC7821 Chip enable output for LC7821.
TDA7313 Chip enable output for TDA7313.
15
PROTECTION Signal input for protection.
If
it
is
low,
all
channel
mute
signal
levels
are
turned
to
high
to
protect
speakers and this unit.
At
abnormal
condition,
after
3
seconds
elapses,
it
does
check
protection.
TC9176 Chip enable output for TC9176.
RESET Input for resetting CPU.(At "H", it is active)
OTHERS
[a
[A
_|
A
Previous
state
|
18/19
VCR
IN
1
Output
to
select
the
video
signal
VCR1
or
VCR2.
NCR
IN
2
|
3
Last
memory
function
is
available
REMARKS
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Output data for each mode is as follows.
Analog ground
Output
is
low
level
under
the
following
conditions.
1. When power is turned on or off.
RDS RESET _| Input to select LC7073.
24
MC14094
STROBE
|
Chip
enable
output
for
MC14094.
SELECTOR
_|
Input
to
select
FR-732RDS.(At
"H",
it
is
active)
2.
When
function
is
changed.
25
CH.
MODE
_|
Output
for
setting
of
PRO-LOGIC
,3-STEREO
mode.
22 MAIN MUTE Output for main mute.
3.
When
"-co
mute
signal"
is
received
from
the
commander.
According
to
each
mode,
data
output
is
as
follows.
MODE OUTPUT
3-STEREO High impedance
PRO-LOGIC H
OTHERS E |
CENTER MUTE
Output for center mute.
Output
is
low
level
under
the
following
conditions.
1. When power is turned on or off.
2. When center mode is turned on or off.
3. When center mode is switched.
4.
When
test
tone
mode
is
switched
on,
or
when
output
is
not
directed
to
center.
5.
When
"-co
mute
signal"
is
received
from
the
commander.

Description
Output for surround mute.
Output is low level under the following conditions.
1. When power is turned on or off.
2. When surround mode is turned on or off.
3.
When
test
tone
mode
is
changed,
or
when
output
is
not
directed
to
surround.
[PinNo[ Symbol
4. When delay time is activated.
27 SURR. MUTE
5. When "-co mute signal" is received from the commander.
RDS S/M Input to detect the signal strength of RDS station.
23 EV power supp
30 Reference voltage.(Connected to +5V, Not Vop)
Ground
31
32_[ NC | Notused
33
Ground
34/35 XTAL/EXTAL Input and Output for crystal oscillator.
4. When preset button is pressed.
5. When displayed preset number is changed during memory scan.
2. When the protection terminal's level is high.
Output for PRO-LOGIC test ton mute.
KEY,;~KEY3 | Input data of K, ~ K, for key scan.
RDS START Input for LC7073 data start.
36 TUNER MUTE Output for tuner mute.
Output is high level under the following conditions.
1. When power is turned on or off.
2. When tuner band is changed.
‘| 6. When "-co mute signal" is received from the commander.
37 ST-BY When the power is on, control data output is "H".
When the power is off, control data output is "L" and last memory function
is activated.
38 AMP MUTE Output for all amplifier mute.
Output is high level under the following conditions.
39 T.TONE MUTE
Output is high level under the following conditions.
When power is turned on or off.
POWER DOWN | Input for power down.(At"L", it is active)
Input for remote control signal.(At "L”, it is active)
Vss
3. When tuning up or down button is pressed.
1. When power is turned on or off.
ST-BY LED _| Output to light up stand-by LED.(At"H’, it is active)
41~4
47/49 | M.VOL. IN 1/IN 2 | Signal input to decrease or increase volume by volume encoder.
| 48 | ss [Ground C—CsCSCSCSC‘*C
NJU9701 Chip enable output for NJU9701.
LM7001 Chip enable output for LM7001.
“SV power Supply.
16-2