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SERVICE MANUAL

LBB 3310/00, 3330/00 and 3331/00

page: 18

Date of issue:

4822 861 11006

July 1998

10.2.7 Audio-Contribution and Audio-Distribution circuit

Noise level

Measure the noise, A-weighted & rms, at AUDIO-DISTR via M3 (pin 3 at X11 or X12), related to M2 (GND): Noise level
(A-weighted): < -70dBV.

X11

+

-

A1

V

Audio-distr.

3

6

2

9

5

4

8

2

7

25

Ω

X205 M3

X150

X110

X10

AC

24V DC

Power Supply

90 ... 264V AC

~

~

Loudspeaker

PCB CPSU

M110 M111

M121

M122 M124

M150 M151

M2

(GND)

(GND)

(GND)

L

R

IN

Rec-IN

Line-IN

Rec-IN

Telephone

003_006.cdr

Figure 6

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Summary of Contents for CCS 800

Page 1: ...2 0 1 3 4 1 5 10 0 1 9 8 7 6 6 10 8 9 7 5 Discussion System CCS 800 Philips Communication Security System ...

Page 2: ......

Page 3: ...des of the chairman and delegate unit 12 10 2 Measuring Instructions for the CPSU LBB3310 00 13 10 2 1 Settings before you start measuring 13 10 2 2 Internal Supply Voltages 13 10 2 3 Phantom supply of the external symmetrical microphone input 13 10 2 4 Supply current measurement 14 10 2 5 AUDIO CONTR to Loudspeaker circuit 14 10 2 6 External Microphone input to Line out balanced 16 10 2 7 Audio C...

Page 4: ...airman units 31 10 4 Measuring spots with signal description 32 11 SPARE PARTS 33 11 1 General 33 11 1 1 Ordering spare parts Service publications 33 11 2 Spare parts list 33 12 ILLUSTRATIONS 37 12 1 Block diagram CPSU 38 12 2 Exploded view CPSU 39 12 3 Lay out CPSU 40 12 4 Circuit diagram CPSU 41 12 5 Measuring points CPSU 43 12 6 Block diagram delegate unit 44 12 7 Block diagram chairman unit 45...

Page 5: ...er to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation mark within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance 2 About this equipment The ...

Page 6: ...e connections are interconnected with the loudspeaker When one or both headphone connections are used and the microphone is not on the loudspeaker is switched OFF It has a protected loop through interconnection In case of disconnection or interruption of the system cable to the next unit the system cable will automatically be terminated with the correct impedance LBB 3330 50 Delegate Unit with Lon...

Page 7: ... jack switch X206 Headphone jack connector with built in switch Rear Left gain control potentiometer R140 To adjust the sensitivity of the microphone input connector Right gain control potentiometer R125 To adjust the sensitivity of the recorder input connector Insertion switch S160 Position 1 loop through Position 0 insertion not used Delegate units Top Microphone Electret microphone with build i...

Page 8: ...crophones off at priority S37 Chime en disable switch 7 Technical data 7 1 CPSU Top Connector 3 5 mm stereo jack headphone connector Rear Connectors 2 x 7 pole DIN for trunk output 1 and 2 3 pole XLR for external microphone 10 x cinch for recorder in output line in output telephone coupler in output and insertion in output Mains input connection 7 2 Delegate and chairman units Rear Trunk input Cab...

Page 9: ...0Vac Nominal output voltage 24Vdc Rated output load 1 7A Dimensions 125mm x 75mm K2 K1 F1 L N DC output AC input Fuse 1 6 Additional technical specification for test environment Warning heatsink is electrical connected to live of mains input depending on polarity Load range Output Min load Rated load Peak load Voltage accuracy 24V 0A 1 7A 2 5A 24 0 6V For a practical load test connect e g a resist...

Page 10: ...tput Test Conditions 24V with 1 7A load 1 p p rated load Oscilloscope with 15Mhz limited bandwidth AC input pin assignment K1 1 3 L N Line Neutral AC input fuse F1 Replace power supply unit in case of fuse failure DC output pin assignment K2 1 2 3 4 5 6 24V 24V 24V GND GND GND 7 4 Additional information For more technical data about the CCS 800 refer to Instructions for use chapter 8 ...

Page 11: ...ed A Distance B Audio generator CCS800 CPSU AC mV meter Unit 1 kHz LBB 333x 1 mic active dBV Unit to adjust A microphone cap with build in loudspeaker B Unit microphone to adjust Measurements Measurement data output and adjustments is represented by the symbol Ä Test procedure Comment 1 Connect the CCS800 unit with the CPSU Select only one active mic on the CPSU 2 Connect to the Line out of the CP...

Page 12: ...hone of the unit is factory tuned 9 Maintenance Preventive maintenance Regular preventive maintenance is not necessary Depending on the usage the equipment may need cleaning Corrective maintenance Defective units can be repaired or replaced by a new one Repair of a discussion unit has to be carried out in a cost effective way with a high quality and without using special tools and equipment Electr...

Page 13: ...e activated This will have no affect on the active microphone s of the delegate unit s Press the microphone switch on the first delegate unit a second time to switch off the microphone and indicator ring Do this also for the chairman unit Testing The AUTO 1 mode In this mode maximum one delegate unit can be active at the same time The test procedure is the same as the OPEN mode with the exception ...

Page 14: ... Nom MAXNOM MAXNOM activated 1 7V 2 0V 15V 8 0V 7 0V CTRL L2 Depending on the voltage level of CTRL L2 the TEST mode the AUTO mode the TRMO Temporary all delegate microphone switched off or RMO all delegate microphones switched off is activated 0V Test mode activated Auto mode active Open mode active RMO active TRMO active 3 9V 12 4V 11 0V 15V 1 7V 2 0V 4 5V 8 0V 7 0V 003_017 cdr General The Main ...

Page 15: ...ated at the rear side to the left position 1 Set the potentiometer of the headphone volume R254 to maximum fully clockwise Set the mode switch S240 to auto mode 1 fully counterclockwise Set the Volume control for the Delegate and Chairman units to maximum fully clockwise Set the gain control potentiometer R140 for the external microphone in the middle position Set the gain control potentiometer R1...

Page 16: ... 6 V 1 Power Supply PCB CPSU 90 264V AC 24V DC A A1 003_001 cdr Figure 1 10 2 5 AUDIO CONTR to Loudspeaker circuit Noise level Measure first the noise A weighted rms from the loudspeaker signal between symmetrical M57 and M59 see figure 2 Noise level A weighted 70dBV 6 2 9 5 4 8 2 7 25Ω X205 M59 X150 X110 X10 AC 24V DC Power Supply 90 264V AC Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151...

Page 17: ... Supply G1 90 264V AC Loudspeaker PCB CPSU M110 M2 SHIELD M1 M111 M121 M122 M124 M150 M151 M57 GND GND GND A1 V Sine Wave Generator GND Audio Contr Trunk 003_003 cdr L R IN Rec IN Line IN Rec IN Telephone Figure 3 settings for G1 measurement results for A1 Amplitude Frequency sound level Nominal level 36 dBV 15 8 mVrms 1 kHz 7 8 dBV 1 5dB 72 dB SPL Bandwidth 36 dBV 15 8 mVrms 125 Hz 8 dBV 2 dB rel...

Page 18: ...d Noise level Measure the noise A weighted rms at LINE OUT via M119 related to M2 GND Noise level A weighted 74 dBV 6 2 9 5 4 8 2 7 25Ω X205 M119 X150 X110 X10 AC 24V DC Power Supply 90 264V AC Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151 M2 GND GND GND X110 M1 V Line OUT 5 9 003_004 cdr L R IN Rec IN Line IN Rec IN Telephone Figure 4 ...

Page 19: ...2 M124 M150 M151 M2 GND GND GND X130 R140 X130 Ext mic Input Ext mic Input G1 G1 M133 M133 M131 M132 1 1 GND GND 2 3 mic IN mic IN A1 V 003_005 cdr L R IN Rec IN Line IN Rec IN Telephone Sine Wave Generator Sine Wave Generator 6 9 X110 M110 M111 M1 GND R Line IN Figure 5 settings for G1 measurement results for A1 Amplitude Frequency Amplification Nominal level 56 dBV 1 6 mVrms 1 kHz 15 dBV 2dB 85d...

Page 20: ... level Measure the noise A weighted rms at AUDIO DISTR via M3 pin 3 at X11 or X12 related to M2 GND Noise level A weighted 70dBV X11 A1 V Audio distr 3 6 2 9 5 4 8 2 7 25Ω X205 M3 X150 X110 X10 AC 24V DC Power Supply 90 264V AC Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151 M2 GND GND GND L R IN Rec IN Line IN Rec IN Telephone 003_006 cdr Figure 6 ...

Page 21: ... Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151 GND GND GND X11 M2 M1 GND 1 Audio Contr Trunk SHIELD L R IN Rec IN Line IN Rec IN Telephone X12 Trunk A1 V GND 3 M2 M3 G1 Sine Wave Generator 003_007 cdr Figure 7 settings for G1 measurement results for A1 Amplitude Frequency Amplification Nominal level 36dBV 15 8 mVrms 1kHz 9 4dBV 1dB 85dB SPL Overload level 11dBV 281 8 mVrms 1 kHz 3dBV 1dB...

Page 22: ...s successively at TELEPHONE OUT M109 LINE OUT M119 and INSERTION OUT M169 all related to M2 GND Noise level A weighted 84dBV 6 2 9 5 4 8 2 7 25Ω X205 Mx Mx Signal M109 M119 M169 Telephone out Line out Insertion out X150 X110 X10 AC 24V DC Power Supply 90 264V AC Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151 M2 GND GND GND GND L R IN Rec IN Line IN Rec IN Telephone A1 V 003_008 cdr Figure...

Page 23: ...169 Telephone out Line out Insertion out X150 X110 X10 AC 24V DC Power Supply 90 264V AC Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151 M2 GND GND GND GND Line IN L R IN Rec IN Rec IN Telephone A1 V G1 Sine Wave Generator 003_009 cdr Figure 9 settings for G1 measurement results for A1 Amplitude Frequency Amplification Nominal level 14dBV 200mVrms 1kHz 14dBV 1dB 85dB SPL Maximum level 11dB...

Page 24: ...UT Circuit Noise level Measure the noise A weighted rms at REC OUT M129 related to M2 GND Noise level A weighted 90dBV 6 2 9 5 4 8 2 7 25Ω X205 M129 X150 X110 X10 AC 24V DC Power Supply 90 264V AC Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151 M2 GND GND GND L R IN Rec IN Line IN Rec IN Telephone A1 V 003_010 cdr Figure 10 ...

Page 25: ... signal at the REC OUT connector according to figure 11 NOTE be sure that the gain control potentiometer R125 of the recorder input is set to the middle position Figure 11 settings for G1 measurement results for A1 Amplitude Frequency Amplification Nominal level 20dBV 100mVrms 1kHz 22dBV 2dB 85dB SPL Maximum level 5dBV 1 78Vrms 1 kHz 3dBV 2dB 110dB SPL Bandwidth 20dBV 100mVrms 125 Hz 1dB 1dB relat...

Page 26: ...10 M111 M121 M122 M124 M150 M151 GND GND GND Line OUT Telephone IN Rec IN Rec IN Line IN R L GND A1 V G1 Sine Wave Generator 003_012 cdr X110 5 Figure 12 settings for G1 measurement results for A1 Amplitude Frequency Amplification Nominal level 14dBV 200mVrms 1kHz 14dBV 1dB 85dB SPL Maximum level 11dBV 3 55Vrms 1 kHz 11dBV 1dB 110dB SPL Bandwidth 14dBV 200mVrms 125 Hz 0 5dB 2dB related to nom leve...

Page 27: ... M122 M124 M150 M151 M2 GND GND GND GND A1 V L R IN Rec IN Line IN Rec IN Telephone 003_013 cdr Figure 13 Set the mode switch S240 is each position and measure the voltages at M30 M31 M32 M33 M4 and M5 related to M2 GND Mode switch Measurement values for A1 V position S240 M33 bit 3 M32 bit 2 M31 bit 1 M30 bit 0 M4 Control L1 M5 Control L2 Auto 1 0 10 0 0 2 5 2 9 Auto 2 0 10 0 10 2 5 2 9 Auto 3 0 ...

Page 28: ...ion and measure the voltages at M4 related to M2 GND X11 M2 M4 GND 4 0 5mA CTRL L1 I Trunk SHIELD 6 2 9 5 4 8 2 7 25Ω X205 X150 X110 S240 X10 AC 24V DC Power Supply 90 264V AC Loudspeaker PCB CPSU M110 M111 M121 M122 M124 M150 M151 GND GND GND A1 V L R IN Rec IN Line IN Rec IN Telephone 003_014 cdr Figure 14 Mode switch position S240 Measurement values for A1 V Auto 1 9 5 Auto 2 5 8 Auto 3 4 5 Aut...

Page 29: ...ted to M2 GND is 36dBV 15 8mVrms with a frequency of 1 kHz position of the loudspeaker volume control switch S260 measurement results for A1 Amplification at M3 position 10 9 4dBV 1dB position 9 11 4dBV 1dB position 8 13 4dBV 1dB position 7 15 4dBV 1dB position 6 17 4dBV 1dB position 5 19 4dBV 1dB position 4 21 4dBV 1dB position 3 23 4dBV 1dB position 2 25 4dBV 1dB position 1 27 4dBV 1dB position ...

Page 30: ... signal AUDIO CONTR by connecting a 680 ohm resistor between M1 and M2 or between pin 1 and 2 of X11 of the Delegate or Chairman unit Disconnect the loudspeaker from the Delegate or Chairman unit and connect a resistor of 25 ohm between pin 1 and 2 of X5 10 3 1 Supply current Measure the supply current from V by means of a current meter in the power supply line This should be between 12mA and 22mA...

Page 31: ...1V 12 8V 4V Power reset activated Increase the power supply V back to 19 5V TEST mode Set the Mode switch at the CPSU successively in the Test and Auto mode Measure the DC voltage via M31 related to M8 0V Mode switch M31 Test mode 4 0V TEST is activated Override mode 0 5V TEST is inactive 10 3 7 Internal signals only for Delegate Units Override Mode ORM Set the Mode switch of the CPSU successively...

Page 32: ...itch M35 Test mode 0 5V AUTO is inactive Auto 1 2 3 or 4 mode 4 0V AUTO is activated Open 1 2 3 or 4 mode 0 5V AUTO is inactive Chairman Only mode Set the Mode switch at the CPSU successively in the Test and Chairman Only mode Measure the DC voltage via M33 related to M8 0V Mode switch M35 Test mode 4 0V ORM is activated Override mode 0 5V ORM is inactive Delegate microphone temporary off when pre...

Page 33: ...p via M34 related to M8 0V Microphone switch Priority button M34 position 1 on 0 5V RMO is inactive position 1 off 4 0V RMO is activated 10 3 8 Priority switch only for Chairman units Connect a Chairman unit to the CPSU Press the Priority button at the Chairman Unit The Light ring must illuminate now A chime tone will now be emitted depending on the position of the chime switch This switch is acce...

Page 34: ...M8 internal 0V M12 5V M14 POWER RESET M15 15V M31 TEST M32 AUTO M33 TRMO M34 RMO M35 ORM M36 MAXNOM M37 RMO TRMO M41 MIC KEY M42 chime disable enable M43 PRIORITY KEY M57 X5 LSP M59 X5 LSP M68 HEADPH M70 MIC LED M72 MIC IN M75 mic amplifier out M82 CHIME M96 auto shut off time M100 UNITTYPE M101 PRESENCE Remarks M37 M42 M43 and M82 are only applicable in the Chairman Unit M32 M33 M34 M35 and M36 a...

Page 35: ...arks about e g availability ordering supply procedures prices complaints replacements e t c 11 2 Spare parts list The parts printed in small italic letters are no spare parts These are for identification purposes POS NR DESCRIPTION SERVICE CODE LBB 3310 00 CPSU Unit spare parts 1 UPPER HOUSING PART PLASTIC 5322 441 12204 2 LOWER HOUSING PART METAL 3 KNOB CONTROL GREY 5322 410 11877 4 KNOB ON OFF G...

Page 36: ... S260 RTA ROTARY SWITCH 11 POS 5322 273 10353 T5 OUTPUT TRANSFORMER 0 1W 5322 146 11015 X10 PIN CONN 3P 09 65 2038 MOLEX X11 AUDIO CON BUS 7 P ZW 5322 267 50547 X12 AUDIO CON BUS 7 P ZW 5322 267 50547 X110 6 PIN JACK ASSEMBLY YCK21 3877 5322 265 11324 X130 XLR SOCKET 3P NC3FAHR 2 5322 265 11325 X150 4 PIN JACK ASSEMBLY YCK21 3084 5322 265 11326 X160 M M CONN 2X10P 2 215079 0 AMP X206 HEADPHONE JAC...

Page 37: ...D ASSY CCS800 19 ADAPTION PIECE 20 MICR STEM TUBE FLEX ASSY 22 MICR EARTH RING 5322 532 13026 23 HEX NUT M18X0 75 5322 505 11265 24 DISH RETAINING RING 19 ST 5322 532 13027 25 GLUE LOCTITE 403 27 BOTTOM HOUSING ALU 28 COMBI SCREW ST ZN M3X8 29 CLAMPING BRACKET 5322 401 11692 30 SCREW SS ST M3X6 TORX 31 BUMPON FOOT SJ5303 3M 5322 462 41686 32 IDENTIFICATION LABEL 33 JACK SEAL 5322 532 12784 34 DUST...

Page 38: ...CK SWITCH SKEVAD 5322 276 13533 S2 TACK SWITCH SKEVAD 5322 276 13533 S37 SLIDE SWITCH 2 POS 5322 277 11793 S42 SLIDE SWITCH 2 POS 5322 277 11793 T5 OUTPUT TRANSFORMER 0 1W 5322 146 11015 X1 WIRE TO BOARD CONN 8P X11 AUDIO CON BUS 7 P MAB7SH L 5322 267 50547 X2 CT CONN 5POL 173979 5 AMP X5 CT CONN 2POL 173979 2 AMP X6 HEADPHONE JACK 5322 267 31808 X7 HEADPHONE JACK 5322 267 31808 X99 SOLDEERLIP AMP...

Page 39: ...out CPSU 12 4 Circuit diagram CPSU 12 5 Measuring points CPSU 12 6 Block diagram delegate unit 12 7 Block diagram chairman unit 12 8 Exploded view delegate chairman unit 12 9 Lay out delegate unit 12 10 Layout chairman unit 12 11 Circuit diagram delegate unit 12 12 Circuit diagram chairman unit 12 13 Measuring points delegate chairman unit 12 14 Circuit diagram Light ring ...

Page 40: ...io distribution Audio contribution Control 2 Control 1 Supply positive Supply negative Ground Audio distribution Audio contribution Control 2 Control 1 Supply Positive Supply negative Ground Telephone out Line out Recorder out Insertion out Headphone Trunk 1 Trunk 2 L R Mains switch Microphone gain Rec gain L R Volume contribution units Volume Monitor Insertion on off 3 1 5 4 6 7 2 3 1 5 4 6 7 2 M...

Page 41: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 39 Date of issue 4822 861 11006 July 1998 12 2 Exploded view CPSU CPSU_EX C DR ...

Page 42: ......

Page 43: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 40 Date of issue 4822 861 11006 July 1998 12 3 Lay out CPSU ...

Page 44: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 41 Date of issue 4822 861 11006 July 1998 12 4 Circuit diagram CPSU CPSU CTRL PART A cpsu_acl cdr ...

Page 45: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 42 Date of issue 4822 861 11006 July 1998 CPSU CTRL Part B Tel out Line out REC OUT cpsu_bcl cdr ...

Page 46: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 43 Date of issue 4822 861 11006 July 1998 12 5 Measuring points CPSU Bottom View Measuring Points for CPSU cpsu_mt cdr ...

Page 47: ...ibution Audio contribution Control 2 Control 1 Supply positive Supply negative Ground Audio distribution Audio contribution Control 2 Control 1 Supply Positive Supply negative Ground Trunk in Trunk out Volume headphone Mic gain preset Logic 3 1 5 4 6 7 2 3 1 5 4 6 7 2 Mic request Timer Auto Microphone off after 30sec 10sec Headphone 1 Headphone 2 Mic on DC DC 15V 5V 0V ...

Page 48: ...ution Audio contribution Control 2 Control 1 Supply positive Supply negative Ground Audio distribution Audio contribution Control 2 Control 1 Supply Positive Supply negative Ground Trunk in Trunk out Headphone 1 Headphone 2 Chime Volume headphone 3 1 5 4 6 7 2 3 1 5 4 6 7 2 Mic gain preset Logic Priority Mic on Mic on Chime enable preset Mic return preset DC DC 15V 5V 0V ...

Page 49: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 46 Date of issue 4822 861 11006 July 1998 12 8 Exploded view delegate chairman unit ...

Page 50: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 47 Date of issue 4822 861 11006 July 1998 12 9 Lay out delegate unit Top View PCB Delegate del_lo cdr ...

Page 51: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 48 Date of issue 4822 861 11006 July 1998 12 10 Lay out chairman unit Top View PCB Chairman Unit chair_lo cdr ...

Page 52: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 49 Date of issue 4822 861 11006 July 1998 12 11 Circuit diagram delegate unit Delegate dele_cil cdr ...

Page 53: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 50 Date of issue 4822 861 11006 July 1998 12 12 Circuit diagram chairman unit Chairman chai_cil cdr ...

Page 54: ... LBB 3310 00 3330 00 and 3331 00 page 51 Date of issue 4822 861 11006 July 1998 12 13 Measuring points delegate and chairman unit Bottom View Measuring Points for Delegate and Chaiman Unit Chairman only delch_mt cdr ...

Page 55: ...SERVICE MANUAL LBB 3310 00 3330 00 and 3331 00 page 52 Date of issue 4822 861 11006 July 1998 12 14 Circuit diagram Light ring PINK GRAY RED BLACK PINK GRAY RED BLACK RED BLACK RED BLACK ...

Page 56: ...4822 861 11006 98 30 1998 Philips Electronics N V Data subject to change without notice ...

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