Philips MCM-277 Service Manual

Service

Micro System

Service Service

MCM277/05/12/98

Service

Service Manual

From week 0913 onwards, ALI solution(decode IC) has been adopted to replace ROHM solution(decode IC), accordingly new Main Board & Display/MCU Board & AC Power Board, etc. were used to match with

new solution.

Please refer chapter 1 to 9 for sets produced before week 0913 and chapter 10 & chapter 15 for changed contents for sets produced in or after week 0913.

Ali solution starting S/N: EF2A0913000001.

COMPACT

DIGITAL AUDIO

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.

Published by SL1020 Service Audio Printed in The Netherlands Subject to modification

Version 1.6

CLASS 1

LASER PRODUCT

3141 785 32376

VERSION VARIATIONS

1-2

Type /Versions:

Board in used:

Service policy

MAIN BOARD CD/MCU BOARD HEADPHONE JACK BOARD DISPLAY BOARD AC POWER BOARD

KEY BOARD TUNER BOARD

Type /Versions: MCM277

Features in used:

Line Out Video Out Surround Out Subwoofer Out Power Booster Out Digital Out Digital in Matrix Surround

Dolby Pro Logic (DPL) Incredible Surround Karaoke Features Voltage Selector ECO Power Standby (LCD Display Off) x x USB Direct

Feature diffrence

/05 /12

C M

C C

C C M

/05

/12 /98

x x x x

C M C C

C C

xxSDR xxsweN

xxxniRDC/nixuA

MCM277

/55

89/16/85/

C C

C C C

C M

* TIPS : C -- Component Lever Repair.

M -- Module Lever Repair

-- Used

SPECIFICATIONS

GENERAL:

Mains voltage : 127/240V -15%+10% Switchable for /98

120V ± 10% for /37

230V ± 10% for /05/12

Mains frequency : 50/60Hz

Clock accuracy : < 4 seconds per day Dimension centre unit :194(W)x269(H)x90(D) (mm)

1-3

Dynamic Bass Boost (DBB) : ON / OFF Input sensitivity

Aux in (at 1kHz) : 500mV at 600 Ω

USB : Host

Output sensitivity

Headphone output at 32 Ω : 10mW ± 2dB (Max. vol.)

Power consumption

Active : 20W

Standby : < 5.5W (DEMO mode)

ECO Power Standby : < 0.5W for /05/12/37

TUNER:

Tuning range : 87.5-108MHz

Grid : 50kHz for /98/12/05

100kHz for /98/55/37

IF frequency : 10.7MHz ± 20kHz

Aerial input : 75 Ω coaxial /05/12/98

300 Ω for /37

Sensitivity at 26dB S/N : < 22µf

Selectivity at 300kHz bandwidth : > 25dB

Image rejection : > 25dB [> 75dB]

IF rejection : > 60B [> 80dB]

Distortion at RF=1mV, dev. 75kHz : < 3%

-3dB Limiting point : < 23.5dBf

Crosstalk at RF=1mV, dev. 40kHz : > 18dB

COMPACT DISC:

Frequency response within ± 3dB : 125Hz - 16kHz

Output level (in Vrms) : 500mV, Z

= 100Ω

out

Signal/Noise ratio (unw.) : > 65dB

Signal/Noise ratio (A-weighted) : > 76dB

Distortion at 1kHz : < 0.02%

Channel unbalance (-40dB) : < ±2dB

Channel separation at 1kHz : > 30dB

Emphasis : 15/50 µS (switched

automatically by CD10)

THD Noise(1kHz,500mW) : < 1.0%

Volume attenuation(1kHz) : > 60dB

MP3 CD WMA:

MP3 : MPEG 1 (ISO/IEC 11172-3)

Layer3

MP3-CD Bit Rate : 8-320 kbps WMA-CD Bit Rate

: 64-192 kbps

Sampling Rate : 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz Format

: ISO9660, Joliet,UDF

ID3 : V1 tag/V2 2.0/V2 3.0

Language Support : English

Tuning range : 531-1602kHz for /05/12/55/98

530-1700kHz for /37/98

Grid : 9kHz for /05/12/55/98

10kHz for /37/98

IF frequency : 450kHz ± 1kHz

Aerial input : Frame aerial 18.1µH

Sensitivity at 26dB S/N : < 4.4mV/M

Selectivity at 300kHz bandwidth : > 18dB

IF rejection : > 45dB

Image rejection : > 28dB

Distortion at RF=50mV, M=80% : < 5%

AMPLIFIER:

Output power

L & R : 2 x 5.0W (4Ω, 1kHz, 10% THD)

:2 x 4.5W (4Ω, 1kHz, 10% THD) /98

:2 x 4.5W (FTC Power, 4Ω, 1kHz, 10% THD

63Hz-12.5kHz) /37

Frequency response within -3dB : 50Hz-16kHz

Digital Sound Control (DSC) : Jazz / Rock / Pop / Classic

[....] Values indicated are for /05/12 only.

MEASUREMENT SETUP

Tuner FM

1-4

Bandpass

LF Voltmeter

e.g. PM2534

RF Generator 

e.g. PM5326

DUT

250Hz-15kHz

e.g. 7122 707 48001

Ri=50

S/N and distortion meter

e.g. Sound Technology ST1700B

Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).

Tuner AM (MW,LW )

RF Generator 

e.g. PM5326

Ri=50

DUT

Frame aerial

e.g. 7122 707 89001

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

S/N and distortion meter

e.g. Sound Technology ST1700B

To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).

Use Audio Signal Disc

DUT

L

R

SBC429 4822 397 30184

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

(replaces test disc 3)

SERVICE AIDS

1-5

All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life 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 also at this potential.

WARNING

Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be used

Safety components are marked by the symbol

ESD

CLASS 1

LASER PRODUCT

Lead free

INSTRUCTIONS ON CD PLAYABILITY

Customer complaint

"CD related problem"

Set remains closed!

check playability

1-6

playability

ok ?

Play a CD

for at least 10 minutes

check playability

playability

ok ?

"fast" lens cleaning

check playability

playability

ok ?

For flap loaders (= access to CD drive possible) cleaning method

4 is recommended

add Info for customer

"SET OK"

return set

1 - 4 For description - see following pages

Exchange CDM

INSTRUCTIONS ON CD PLAYABILITY

1-7

PLAYABILITY CHECK

For sets which are compatible with CD-RW discs

use CD-RW Printed Audio Disc....................7104 099 96611

TR 3 (Fingerprint) TR 8 (600µ Black dot) maximum at 01:00

• playback of these two tracks without audible disturbance playing time for: Fingerprint

Black dot from 00:50 to 01:10

• jump forward/backward (search) within a reasonable time

For all other sets

use CD-DA SBC 444A..................................4822 397 30245

TR 14 (600µ Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000µ wedge)

• playback of all these tracks without audible disturbance playing time for: 1000µ wedge 10seconds

Fingerprint 10seconds Black dot from 01:05 to 01:25

• jump forward/backward (search) within a reasonable time

10seconds

LIQUID LENS CLEANING

Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make scratches on the lens.

Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent

The actuator is a very precise mechanical component and may not be damaged in order to guarantee its full function. Clean the lens gently (don’t press too hard) with a soft and clean cotton bud moistened with the special lens cleaner.

The direction of cleaning must be in the way as indicated in the picture below.

CUSTOMER INFORMATION

It is proposed to add an addendum sheet to the set which informs the customer that the set has been checked carefully - but no fault was found. The problem was obviously caused by a scratched, dirty or copy-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in the addendum sheet.

The final wording in national language as well as the printing is under responsibility of the Regional Service Organizations.

PREPARATIONS AND CONTROLS

Preparation

Setting the clock

After connecting MCM275 to the power supply,

set the clock first.

Press and hold STANDBY-ON/ ECO

POWER to switch the set to Standby mode

The display shows the set time

-- --:-- -- flashes by default if you have not set

the clock

In the standby mode, press and hold DISPLAY/

CLOCK on the remote control

SET CLOCK scrolls on the display

24 HR or 12 HR appears for the initial

clock setting. To select 24-hour clock or

12-hour clock,

On the remote control, press VOLUME +/-

once or more (or turn VOLUME on the

set)

On the remote control, press DISPLAY/

CLOCK to confirm

The hours digits star t flashing

Hold down or press VOLUME +/- repeatedly

to set the hours (or turn VOLUME on the

set)

Press DISPLAY/CLOCK to confirm

The minutes digits start flashing

Hold down or press VOLUME +/- repeatedly

to set the minutes (or turn VOLUME on the

set)

Press DISPLAY/CLOCK to confirm

– To exit without storing the clock setting press

STOP 9

Helpful hints:

– The clock setting will be erased when the system

is disconnected from the power supply.

– The set will exit from the clock setting mode if

no button is pressed within 90 seconds.

–To set the clock automatically by using a time

signal which is broadcast together with the RDS

signal see chapter RDS: Automatic clock

setting via RDS.

USB

Using the remote control

IMPORTANT!

– Remove the

protective plastic tab

before using the

remote control.

– Always point the

remote control directly

towards IR area.

Notes for remote control:

– First select the source you wish to

control by pressing one of the source select

keys on the remote control (for example

CD, TUNER).

–Then select the desired function (for

example

ÉÅ

To replace the remote controls’

battery

CAUTION!

– Remove the battery if it is exhausted

or will not be used for a long time.

– Batteries contain chemical substances,

so they should be disposed of properly.

Press and hold 1 as indicated.

Simultaneously, pull the battery tray at 4.

Remove the old battery and put a new CR2025

battery in place.

Put back the battery tray.

1-8

PREPARATIONS AND CONTROLS

Controls

STANDBY-ON/ ECO POWER

– press briefly to switch the set on or off (standby/

ECO POWER);

– In standby or Eco Power mode: press and

hold to toggle between Standby and ECO

POWER mode (power-saving mode)

– Red indicator: lights up red when the set is

switched to ECO POWER mode

SOURCE

–selects sound source CD, USB, TUNER or

AUX

– In standby or Eco Power mode: switches the

set on and selects sound source CD, USB,

TUNER or AUX

–sensor for the infrared remote control

Helpful hints: Always point the remote control

towards this sensor.

PUSH OPEN

– push to unfold or fold the control panel

CD OPEN • CLOSE 0

– opens/closes the CD door

CD door

VOLUME

–adjusts the volume level

– Clock/Timer: adjusts the hours and minutes

– 3.5 mm headphone socket

Helpful hints:

– Adjust the volume to a moderate level

before you plug in the headphones.

– Connecting headphones will switch off the

speakers.

ALBUM/ PRESET + /-

– CD/USB: selects albums (for MP3/WMA only)

– TUNER: selects a preset radio station

4 / ¢

– CD/USB: skips or searches CD tracks/titles

backwards/forwards

– Tun e r : tunes to radio stations

– CD/USB: starts or pauses playback

DBB (Dynamic Bass Boost)

– turns the bass enhancement on/off

DSC (Digital Sound Control)

–selects predefined sound settings: ROCK,

JAZZ, POP, CLASSIC

PROGRAM

– CD/USB: programs tracks

– Tuner: programs preset radio stations

STOP

– CD/USB: stops playback; erase a program

AUX-IN

– connects to the AUDIO OUT jack on the

external appliance

– jack for the external USB mass storage device

Remote control

USB

AUX

– selects the audio input from an additional

connected appliance

– In standby or Eco Power mode:: switches the

set on and selects the audio input from an

additional connected appliance

VOLUME +/-

– adjusts the volume level

– Clock/Timer: adjusts the hours and minutes

TIMER

–displays the timer setting

– switches the timer on/off

– enters the timer setting mode (press and hold

for more than 2 seconds)

SLEEP

– set the sleep timer

MUTE

– switches the sound off temporarily

RDS/NEWS

– Tun er : selects RDS (Radio Data System)

information

– CD/USB/AUX: activates/deactivates news

SHUFFLE

– selects random playback

REPEAT

– selects continuous playback

DSC (Digital Sound Control)

–selects predefined sound settings: ROCK,

JAZZ, POP, CLASSIC

DBB (Dynamic Bass Boost)

– turns the bass enhancement on/off

PROGRAM

– CD/USB: programs tracks

– Tun e r: programs preset radio stations

DISPLAY/CLOCK

– Clock: - displays the set time

- In standby mode: enters the clock

setting mode (press and hold for more

than 2 seconds)

– TUNER/Audio CD: switches between clock

display and playback

display

– MP3/WMA files: displays disc information

during playback

Notes for remote control:

– First select the source you wish to

control by pressing one of the source select

keys on the remote control (for example

CD, TUNER).

–Then select the desired function (for

example

ÉÅ

–press briefly to switch the set on or off (standby/

ECO POWER);

– In standby or Eco Power mode: press and

hold to toggle between Standby and ECO

POWER mode (power-saving mode)

Source buttons

USB

–selects USB source

– In standby or Eco Power mode:: switches the

set on and selects USB source.

–selects CD source

– In standby or Eco Power mode:: switches the

set on and selects CD source.

TUNER

– selects TUNER source and toggles between the

wavebands: FM and MW

– In standby or Eco Power mode:: switches the

set on and selects TUNER source

Controls

1-9

CONTROLS & INSTALLATIONS

4 / ¢

– CD/USB: skips or searches CD tracks

backwards/forwards

– Tuner: tunes to radio stations

ALBUM/ PRESET 3 / 4

– CD/USB: selects the next/previous album (for

MP3/WMA only)

– TUNER: selects a preset radio station

ÉÅ

– CD/USB: starts or pauses playback

– CD/USB: stops playback; erase a program

OPEN • CLOSEç

– opens/closes the CD door

Controls Installation

Placing MCM275

With the detachable stand and by-packed wall

mounting kit , MCM275 allows you to place it in

two ways: on desktops with stand or on

walls without stand.

Mounting stand onto the set

MCM275 is equipped with a stand. To mount

the stand onto the set,

Put MCM275 on a flat and firm surface, rear side

facing up

As shown, align the stand to the slots at set’s

bottom, 4 FRONT facing down

P RE

FR O NT

FRONT

P R E SS

Push the stand down into the slots

When the stand is in place, you will hear a

click

See Appendix: How to mount your

MCM275 onto walls to learn more about

wall mounting.

Mounting MCM275 onto walls

Installation

MW loop

antenna

Speaker

(left)

Speaker

(right)

FM wire

antenna

AC power cord

Rear connections

Warning:

– Never make or change connections with

the mains supply switched on.

– Install your set near the AC outlet and

where the AC power plug can be reached

easily.

Speaker connections

Use the supplied speakers only. Using other

speakers can damage the set or the sound

quality will be negatively affected.

Connect the cable of the left speaker to LEFT

(red and black) and the cable of the right

speaker to RIGHT (red and black) as follows:

a. Press the clip of the red terminal and fully

insert the stripped portion of the colored (or

marked) speaker cable into the socket, then

release the clip

b. Press the clip of the black terminal and fully

insert the stripped portion of the black (or

unmarked) speaker cable into the socket, then

release the clip

Antenna connections

MW antenna

Assemble the loop antenna as shown:

1-10

CONTROLS & INSTALLATIONS

Installation

Fit the plug of the loop antenna to AM (MW)

ANTENNA as shown below

Adjust the position of the antenna for optimal

reception (as far away as possible from the TV,

VCR or other radiation sources)

FM antenna

The wire antenna supplied can only be used to

receive nearby stations. For better reception we

recommend using a cable antenna system or an

outdoor antenna.

Extend the wire antenna and fit it to FM

ANTENNA as shown below

ANTENNA

Insert the loop antenna into the slot on the set

Note: If you are using a cable antenna system or

an outdoor antenna, fit the antenna plug, instead of

the wire antenna, to FM ANTENNA .

By connecting a USB mass storage device

(including USB flash memory, USB flash players

or memory cards) to the Hi-Fi system, you can

enjoy the device’s stored music through the

powerful speakers of Hi-Fi system.

Check you have unfolded the control panel

Insert the USB device’s USB plug into the socket

on the set ‘s foldable control panel

Move the antenna in different positions for

optimal reception (as far away as possible from

the TV, VCR or other radiation sources)

Fix the antenna’s end to the wall

Connecting an additional

appliance

Connecting a USB device or memory

card

for the devices with USB cable:

a. Insert one plug of the USB cable (not

supplied) to the socket

on the set ‘s

foldable control panel

b. Insert the other plug of the USB cable to the

USB output terminal of the USB device

for the memory

card:

a. Insert the memory card into a card reader

(not supplied)

b. Use a USB cable (not supplied) to connect

the card reader to the socket

on the set ‘s foldable control panel

Installation

Using AC power

Make sure all the connections have been made

before switching on the power supply

Connect the AC power cord to the wall socket.

This switches on the power supply

When MCM275 is switched to standby, it is still

consuming some power. To disconnect the

system from the power supply completely,

remove the power plug from the wall

socket.

The type plate is located on the rear of the

set.

For users in the U.K.: please follow the

instructions.

Warning!

To avoid overheating of the system, a safety

circuit has been built in. Therefore, your

system may switch to Standby mode

automatically under extreme conditions. If

this happens, let the system cool down

before reusing it (not available for all versions).

This product complies with the radio

interference requirements of the European

Community.

CAUTION

Visible and invisible laser radiation. If the

cover is open, do not look at the beam.

High voltage! Do not open. You run the risk

of getting an electric shock.

The machine does not contain any user-

serviceable parts.

Modification of the product could result in

hazardous radiation of EMC or other

unsafe operation.

Select AUX mode on the set

Helpful hints:

–Always refer to the owner’s manual of other

equipment for complete connection.

Connecting a non-USB device

It is possible to use an additional appliance, e.g.

TV, VCR or CD recorder with the set. On

MCM275, you can playback music from an

external source.

Follow the Step 1 under Connecting a USB

device or memory card

Insert one plug of the audio cable (not supplied)

to the socket AUX IN on the set ‘s foldable

control panel

Connect the other end of the audio cable to the

AUDIO OUT terminal of the additional

appliance

1-11

English

Troubleshooting

WARNING

Under no circumstances should you try to repair the system yourself, as this will invalidate the

warranty. Do not open the system as there is a risk of electric shock.

If a fault occurs, first check the points listed below before taking the system for repair. If you

are unable to remedy a problem by following these hints, consult your dealer or Philips for

help.

“NO DISC” is displayed.

Some files on the USB device are not

displayed.

Radio reception is poor.

The system does not react when buttons

are pressed.

Sound cannot be heard or is of poor

quality.

The left and right sound outputs are

reversed.

Problem

Solution

Insert a disc.

Wait until the moisture condensation at the lens

has cleared.

Replace or clean the disc, see “Maintenance”.

Use a finalised CD-RW or a correct MP3/WMA

-CD format disc.

Check if the number of folders exceeds 99 or

the number of titles exceeds 999

If the signal is too weak, adjust the antenna or

connect an external antenna for better

reception.

Increase the distance between the Micro HiFi

System and your TV or VCR.

Remove and reconnect the AC power plug and

switch on the system again.

Adjust the volume.

Disconnect the headphones.

Check that the speakers are connected correctly.

Check if the stripped speaker wire is clamped.

Make sure the MP3-CD was recorded within

32~256 kbps bit rate with sampling frequencies

at 48 kHz, 44.1 kHz or 32 kHz.

Check the speaker connections and location.

The remote control does not function

properly.

The timer is not working.

The Clock/Timer setting is erased.

Select the source (CD or TUNER, for example)

before pressing the function button (ÉÅ,í,

ë).

Reduce the distance between the remote

control and the system.

Insert the batter y with its polarities

(+/– signs) aligned as indicated.

Replace the battery.

Point the remote control directly toward

IR sensor on the front of the system.

Check the set is switched off

Set the clock correctly.

Press TIMER to switch on the timer.

Power has been interrupted or the power cord

has been disconnected. Reset the clock/timer.

Troubleshooting

TROUBLESHOOTING

1-12

DISMANTLING INSTRUCTIONS

2-1 2-1

Dismantling the Rear Portion and PCBs

1) Press the 2 juts and pull out the Stand as shown in figure

Figure 1

Figure 2

Dismantling the Rear Portion and PCBs

5) Loosen 2 screws E to remove the Bracket Jack Board as

shown in Figure 4.

6) Loosen 3 screws F to remove the Main Board as shown

in figure 5.

Figure 4

2) Loosen 5 screws A and 6 screws B to remove the Rear

Cabinet as shown in figure 2.

3) Loosen 3 screws C to remove the SP & ANT Jack Board

as shown in figure 3.

4) Loosen 5 screws D to remove the Power Module as

shown in figure 3.

Figure 5

Dismantling of the Display Lens & the Volume knob

1) Use a flat head screw driver to give a push in the direction

as shown in figure 6.

2) Place two small screw drivers in between the front cabinet

& knob to give more leverage in pulling out the Volume

Knob as shown in figure 7.

Figure 3

Figure 7

Figure 6

Dismantling of the CD Module & CD Door Carrier

1) Loosen 5 screws J mounting the Key Board to the Front

Cabinet to remove the Key Board as shown in figure 8.

2) Loosen 4 screws H and 3 screws G to CD Module as

shown in figure 8.

3) Loosen 2 screws I to remove the Servo Motor Mechanism

as shown in figure 8.

2-2

Service pos A

Figure 8

4) Loosen 4 screws K to remove the Right CD Door Carrier

and 4 screws L to remove the Left CD Door Carrier as

shown in figure 9.

Service pos B

Figure 9

Note: After re-assembly, it is very important to ensure all

wires are routed properly to ensure that they do not

touch/obstruct all moving parts.

SERVICE TEST PROGRAM

3-1

KEY TEST

Button pressed?

Display shows

Table 1

To enter Service

Testprogram hold

PLAY & Door Open/Close

buttons

depressed while

plugging mainscord in.

Display shows the

MCU version

"MCU-V

yy"

(Main menu)

Figure 1

Door switch is ignored → CD door can be opened.

V refers to Version

yy refers to Software version number of the uProcessor (counting up from 01 to 99)

DISPLAY TEST

Button pressed?

Display shows Figure 1 All display flags on.

Button pressed?

Display shows alternate

segment display from SEG0

to SEG64.

ADC TEST

DBB

Button pressed?

Display shows "ADC0 Value"

for ADC0

(Input Line - For key scanning)

DBB

Button pressed?

Display shows "ADC1 Value"

for ADC1

(Input Line - ioNTC Heat detection for transformer)

Various

other Tests

TEST

EEPROM CLEAR A test pattern will be sent to the EEPROM.

LEAVE SERVICE TEST PROGRAM

Activated with

PROGRAM

to Exit

Disconnect mains cord

ACTION

"EEP CLR" is displayed while the erase processing.

Caution! All presets from the customer will be lost!!

Key test table

KeyNr Set key KeyNr Set key KeyNr Set key

0 CD 10 RDS 20 PROGRAM

1 AUX 11

2 TUNER 12 CLOCK/DISP

LAY

3 SOURCE 13 ALBUM + SLEEP

STANDBY/ON

OPEN/CLOSE

VOLUME DOWN

14 ALBUM - TIMER

SKIP PREV 25 DBB

16 SKIP NEXT 26 DSC

7 VOLUME UP 17 NULL 27 MUTE

8 NULL 18 NULL 28 USB

9 NULL 19 REPEAT

Table 1

21 SHUFFLE

22 NULL

23 24

Button pressed?

No Display shows

Button pressed?

ADC Test is used for checking the ADC inputs to the microprocessor.

The display shows an ADC value between 0 and 255 for an input signal between 0 and 5V.

DBB

Button pressed?

Display shows "ADC2 Value"

for ADC2

(Input Line - Rotary volume)

DBB

Button pressed?

Display shows "ADC3 Value"

for ADC3

(Input Line - Door switch status)

DBB

Button pressed?

Display shows "ADC4 Value"

for ADC4

(Input Line - Version detection)

Button pressed?

SET BLOCK DIAGRAM

4-1 4-1

BR24L02F-WE2

IC104

IC701

IC801

UR11

DAYANG M93BGP-BF

IC100

BR24L02F-WE2

IC504

IC401

IC501

IC102

CF91D

E01J

IC103

IC300

W27C512-45Z

IC302

468D

IC601

AP34063A

IC301

SET WIRING DIAGRAM

5-1

6-1

BLOCK DIAGRAM - RDS/RBDS PRE-PROCESSOR SAA6588T

BLOCK DIAGRAM

multi-path

data

available

pause

output

C-BUS

MAIN BOARD

TABLE OF CONTENTS

Internal IC Diagram ............................................... 6-1 to 6-5

Main Board(5757) Layout Top View ................................ 6-6

Main Board(5757) Layout Bottom View .......................... 6-7

Circuit Diagram - Main Board(5757) ............................... 6-8

Main Board(5762) Layout Top View ................................ 6-9

Main Board(5762) Layout Bottom View ........................ 6-10

Circuit Diagram - Main Board(5762) ............................. 6-11

HP Jack Board ............................................................... 6-12

Electrical Parts List ........................................................ 6-13

DAVN

100 nF

DDD

VNICTUOCS

5 V

C10

560 pF

71918

RDS/RDBS

CLOCKED

57 kHz

MPX

330 pF

multiplex

PSWN

DECODER

DEMODULATOR

COMPARATOR

8th ORDER

BAND-PASS

0.47 嘕F

audio

input

MPTH 2

SAA6588

0.47 嘕F

inputs

INTERFACE

DETECTOR

SIGNAL QUALITY

DETECTOR

MULTI-PATH

PAUSE

DETECTOR

AFIN

SDA

SCL

MAD

SSD

C-BUS SLAVE

OSCILLATOR

TEST

POWER

DDA

LVI N

C11

2.2 nF

level

input

TRANSCEIVER

AND CLOCK

CONTROL

1715

SUPPLY

AND RESET

100 nF

5 V

OSCO

OSCI

TCON MRO

ref

SSA

2.2 嘕F

1 k"

470

100

MGK535

MHz

n h4.332

82 pF

n = 1 to 4

47 pF

6-2 6-2

BLOCK DIAGRAM

mute/stand-by

switch input

MLC351

output 1

15 k

x 1

stand-by

switch

mute switch

stand-by reference voltage

18 k

k

60 k

mute switch

power stage

mute switch

k

60 k

power stage

275

SGND

signal

ground

PGND

output 2

non-inverting

input 1

non-inverting

input 2

supply voltage ripple rejection

output

TDA1517

mute reference voltage

input

reference

voltage

power ground (substrate)

PIN DESCRIPTION - RDS/RBDS PRE-PROCESSOR SAA6588T

PINNING

SYMBOL PIN DESCRIPTION

MRO 1 mXOWLSDWKUHFWL¿HURXWSXW

MPTH 2 mXOWLSDWKGHWHFWRURXWSXW

TCON 3 WHVWFRQWUROLQSXWSLQ

OSCO 4 RVFLOODWRURXWSXW

OSCI 5 RVFLOODWRULQSXW

SSD

DDD

6 digital gURXQG0V)

7 digital supply vROWDJH5V)

DAVN 8 data availabOHRXWSXWDFWLve LOW)

SDA 9 I

SCL 10 I

C-bus serial data I/O

C-bus serLDOFORcNLQSXW

SYMBOL PIN DESCRIPTION

PSWN 11 pause sZLWFKRXWSXWDFWLve LOW)

MAD 12 slavHDGGUHVV/6%LQSXW

AFIN 13 DXGLRVLJQDOLQSXW

DDA

SSA

14 DQDORJVXSSO\vROWDJH5V)

15 DQDORJgURXQG0V)

MPX 16 multiple[LQSXWVLJQDO

ref

17 refHUHQFHvROWDJHRXWSXW

SCOUT 18 EDQGSDVV¿OWHURXWSXW

CIN 19 FRPSDrDWRULQSXW

LV IN 20 l ev HOLQSXW

BLOCK DIAGRAM - POWER AMPLIFIER TDA1517

MRO

OSCI

MPTH

TCON

OSCO

SAA6588T

DAVN

SSD

DDD

SDA

SCL

MGK534

LVIN

CIN

SCOUT

ref

MPX

SSA

DDA

AFIN

MAD

PSWN

6-3

.This text is here in

BLOCK DIAGRAM

PRESCALER

PROGRAMMABLE

COUNTER

STABILIZER

WINDOW

DETECTOR

LAST-STATION

MEMORY

AM/FM

INDICATOR

IN-LOCK

DETECTOR

PILOT

DETECTOR

CHARGE

PUMP

MULTIPLEXER

CRYSTAL

OSCILLATOR

SHIFT REGISTER

FRONT-END

OSCILLATOR

IF2

IF1

MIXER

SEQUENTIAL

CIRCUIT

STATUS

FRONT-END

OSCILLATOR

DETECTOR

V/I

CONVERTER

MIXER

AGC

AFC

hard mute

level

PLL

DECODER

MATRIX

SDS

MUTE

down

level

RFGND

DATA

BUS-CLOCK

WRITE-ENABLE

FM-RFI

STAB(A)

STAB(B)

AM-RFI

XTAL

RIPPLE

263031

AGC

AM-IFI/O2

AM-MIXERAMOSC

AM-IFI1

40 41

36 44

822

181739 37 333535

4342282729

MO/ST

AFRO

MUTE

AFC

(n)

AFC

(p)

AFC

VCO

LFI

PILFIL

AFLO

stereo

mono

38 kHz

19 kHz

FM-IFI1 FM-IFI2

FM-IFO1

FM-MIXER

FMOSC

FM-RFO

CC1

DDD

TEA5757;

TEA5759

DGND

TUNE

RFGND

MPXI

AFO

CC2

IFGND FSIFMDEM

MHA111

6-3

PIN DESCRIPTION - POWER AMPLIFIER TDA1517

PINNING

" 1tupni gnitrevni-non11VNI

" 2tupni gnitrevni-non92VNI

handbook, halfpage

7supply voltage

INV1

SGND

SVRR

OUT1

PGND

OUT2

M/SS

INV2

TDA1517

MLC352

1tuptuo41TUO

2tuptuo62TUO

dnuorg langis2DNGS

dnuorg rewop5DNGP

tupni hctiws ybdnats/etum8SS/M

tuptuo noitcejer elppir egatlov ylppus3RRVS

NOITPIRCSEDNIPLOBMYS

BLOCK DIAGRAM - SELF TUNED RADIO TEA5757

Pin configuration for SOT110-1 and

SOT352-1.

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