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Philips CCS 800 Service Manual

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Discussion System
CCS 800
Philips
Communication &
Security System

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Summary of Contents for Philips CCS 800

  • Page 1 Discussion System CCS 800 Philips Communication & Security System...

  • Page 3: Table Of Contents

    SERVICE MANUAL CONTENTS: 1. ABOUT THIS MANUAL..........................3 1.1 Important safety instructions ..........................3 2. ABOUT THIS EQUIPMENT........................3 3. INSTALLATION ............................3 4. ORDERING SERVICE INFORMATION ....................4 5. INTRODUCTION ............................4 6. CONTROLS AND INDICATORS ......................5 7. TECHNICAL DATA ..........................6 7.1 CPSU..................................6 7.2 Delegate and chairman units ..........................
  • Page 4 SERVICE MANUAL 10.3 Measuring instructions for the Delegate and Chairman unit (LBB3330/00, LBB3331/00)......28 10.3.1 Supply current.............................. 28 10.3.2 Internal Supply Voltages..........................28 10.3.3 Unit presence ............................... 28 10.3.4 Unit type ..............................28 10.3.5 Microphone switch and Light-ring ......................29 10.3.6 Internal signals for Delegate and Chairman units.

  • Page 5: About This Manual

    SERVICE MANUAL About this manual This manual is intended for service engineers involved in maintenance and repair of Philips CSS "CCS 800 discussion system". This manual supplies information about the maintenance and repair of the LBB 3310/00, LBB3310/00D, LBB3330/00, LBB3330/50, 3331/00, and LBB 3331/50 discussion system devices and is supplementary to the “Instructions for Use”...

  • Page 6: Ordering Service Information

    Ordering Service Information Service publications of the Units are listed in: Survey of CSS Service Support information’ and are only for internal use. Issued by: Customer Service & Technical Support CSS and can only be ordered by your local Philips organization. Introduction...

  • Page 7: Controls And Indicators

    SERVICE MANUAL Controls and indicators Control and Power Supply Unit (CPSU) On/OFF button Switches the CPSU ON or OFF Green LED Indicates if the CPSU is switched ON or OFF Left rotary switch (S240) Microphone-mode switch. To select the mode for the delegate microphones.

  • Page 8: Technical Data

    SERVICE MANUAL Additional for chairman units Violet button (S1) Priority function (chime tone) Red LED for microphone management. Bottom Small bracket at cable entry Hides the priority and chime mode switch (see “Instructions for use”). Switch behind bracket Delegate microphones off at priority (S37) Chime en-/disable switch Technical data CPSU...

  • Page 9: Power Supply

    SERVICE MANUAL Power supply Type of power supply : Nedap 9553673 Mains input voltages : 90 .. 264Vac Input frequency range : 47 .. 63Hz Max. input current : 0.9A at 110Vac or 0.3A at 240Vac Nominal output voltage : 24Vdc Rated output load : 1.7A Dimensions...

  • Page 10: Additional Information

    DC output pin assignment K2 +24V +24V +24V Additional information For more technical data about the CCS 800 refer to ‘Instructions for use’, chapter 8. LBB 3310/00, 3330/00 and 3331/00 page: 8 Date of issue: 4822 861 11006 July 1998...

  • Page 11: Microphone Stem Adjustment

    SERVICE MANUAL Microphone stem adjustment Microphone stem When the microphone stem assembly has to be replaced, it is required that the input level of the microphone is adjusted again by use of the preset potentiometer R72.. This due to the spread in sensitivity of the microphone capsule (approx. ±4dB).

  • Page 12: Maintenance

    SERVICE MANUAL Of importance is that for all measurements the distance between loudspeaker and microphone is equal. Ä Measure the audio level on the AC meter. Take this level as ref. for the CCS800 units to be adjusted. Repeat the ref. measurement for a check with other unit(s). The factory level adjustment is ±0.5dB Remove the factory adjusted unit and place Do not change the audio setting adjustments.

  • Page 13: Diagnostics/ Fault Finding

    SERVICE MANUAL Diagnostics/ Fault finding 10.1.1 Functional test Before you start the functional test connect a correct working chairman unit and at least two delegate units to the CPSU and switch on the CPSU Testing the Light-ring Put the mode switch in the TEST position All the Light-rings of the delegate and chairman units must lit now Testing the OPEN 1 mode •...

  • Page 14: Brief Description Of The Various Modes Of The Chairman And Delegate Unit

    SERVICE MANUAL 10.1.2 Brief description of the various modes of the chairman and delegate unit The CCS800 discussion system uses two control lines, CTRL-L1 and CTRL-L2. These two control lines are used to set the delegate and chairman units in a specific mode. Each mode depends of the position of the mode switch, located on the CPSU and pressing the microphone button or priority button on the delegate and chairman units.

  • Page 15: Measuring Instructions For The Cpsu (Lbb3310/00)

    SERVICE MANUAL 10.2 Measuring Instructions for the CPSU (LBB3310/00) Introduction The measurement procedure contains the following items: • the internal supply voltages • the supply current • the audio-contribution to loudspeaker circuit • the line-in to telephone-out, line-out and insertion-out circuit •...

  • Page 16: Supply Current Measurement

    SERVICE MANUAL 10.2.4 Supply current measurement Measure the supply current from V+ by means of a current meter in the power supply line itself: this should be between 30mA and 40mA. Power Supply 1,2,3 CPSU 90 ... 264V AC / 24V DC 4,5,6 003_001.cdr Figure 1...
  • Page 17 SERVICE MANUAL Nominal level and bandwidth Insert a sine wave signal to the AUDIO-CONTR via M1 related to M2 and measure the output signal between M59 and M57. 90 ... 264V AC Power Supply 24V DC PCB CPSU Loudspeaker X205 M59 25Ω...

  • Page 18: External Microphone Input To Line Out (Balanced)

    SERVICE MANUAL 10.2.6 External Microphone input to Line out (balanced) Noise level Measure the noise, A-weighted & rms, at LINE-OUT via M119, related to M2 (GND): Noise level (A-weighted): < -74 dBV. 90 ... 264V AC Power Supply 24V DC PCB CPSU X110 Loudspeaker...
  • Page 19 SERVICE MANUAL Nominal level, maximum level and bandwidth Connect successively a sine-wave generator to the left and right external microphone input connections, (“MIC-IN+” (M131) and “MIC-IN-” (M132) ) related to GND (M133) according to figure 5. NOTE: be sure that the gain control potentiometer (R140) of the external microphone input is set to the middle position.

  • Page 20: Audio-Contribution And Audio-Distribution Circuit

    SERVICE MANUAL 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. 90 ... 264V AC Power Supply 24V DC PCB CPSU Loudspeaker...
  • Page 21 SERVICE MANUAL Nominal level, maximum level and bandwidth Connect a sine-wave generator to one Trunk connectors (X11) and measure the output signal at the other Trunk connector (X12) according to figure 7. 90 ... 264V AC Power Supply 24V DC PCB CPSU Trunk Loudspeaker...

  • Page 22: Line-In To Telephone-Out, Line-Out, Insertion-Out Circuit

    SERVICE MANUAL 10.2.8 LINE-IN to TELEPHONE-OUT, LINE-OUT, INSERTION-OUT Circuit. Noise level Measure the noise, A-weighted & rms, successively at TELEPHONE-OUT (M109), LINE-OUT (M119) and INSERTION- OUT (M169) all related to M2 (GND): Noise level (A-weighted): < -84dBV. 90 ... 264V AC Power Supply 24V DC PCB CPSU...
  • Page 23 SERVICE MANUAL Nominal level, maximum level and bandwidth Connect a sine-wave generator to the LINE-IN connector and measure successively the output signal at the TELEPHONE-OUT (M109), LINE-OUT (M119) and INSERTION-OUT“ (M169) connector according to figure 9. 90 ... 264V AC Power Supply 24V DC PCB CPSU...

  • Page 24: Rec-In-L And Rec-In-R To Rec-Out Circuit

    SERVICE MANUAL 10.2.9 REC-IN-L and REC-IN-R to REC-OUT Circuit. Noise level Measure the noise, A-weighted & rms, at REC-OUT (M129) related to M2 (GND): Noise level (A-weighted): < -90dBV. 90 ... 264V AC Power Supply 24V DC PCB CPSU Loudspeaker X205 M129 25Ω...
  • Page 25 SERVICE MANUAL Nominal level, maximum level and bandwidth Remove the interconnections of REC-IN-L and REC-IN-R and connect successively a sine-wave generator to the REC-IN- L and REC-IN-R connector. Measure the output 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.

  • Page 26: Telephone-In To Line-Out Circuit

    SERVICE MANUAL 10.2.10 TELEPHONE-IN to LINE-OUT Circuit Nominal level, maximum level and bandwidth 90 ... 264V AC Power Supply 24V DC PCB CPSU X110 Loudspeaker X205 M119 Line-OUT 25Ω Sine-Wave Generator (GND) (GND) (GND) M110 M111 M121 M122 M124 M150 M151 X110 X150 Line-IN...

  • Page 27: The Mode Switch

    SERVICE MANUAL 10.2.11 The mode switch By use of a combination of different voltage levels at CTRL-L1 and CTRL-L2 each mode of the CPSU can be passed on to the Delegate and Chairman units. 90 ... 264V AC Power Supply 24V DC PCB CPSU Loudspeaker...

  • Page 28: Functional Test Of The Mode Switch (S240)

    SERVICE MANUAL 10.2.12 Functional test of the mode switch (S240) Connect a current source of 0.5mA to the control-line CTRL-L1 via M4 Set the “mode switch” (S240) is each position and measure the voltages at M4 related to M2 (GND) 90 ...

  • Page 29: Functional Test Of System Volume Control (S260)

    SERVICE MANUAL 10.2.13 Functional test of system volume control (S260). Measure the output level related to each position of the volume control (S260) for the loudspeakers of the Delegate and Chairman units. Figure 15 Input setting G1: M1 related to M2 (GND) is -36dBV (15.8mVrms) with a frequency of 1 kHz. position of the measurement results for A1 loudspeaker volume...

  • Page 30: Measuring Instructions For The Delegate And Chairman Unit (Lbb3330/00, Lbb3331/00)

    SERVICE MANUAL 10.3 Measuring instructions for the Delegate and Chairman unit (LBB3330/00, LBB3331/00). How to check if a Delegate or Chairman unit is correct is described in the next paragraphs. The items which are described are: • supply current • internal supply voltages •...

  • Page 31: Microphone Switch And Light-Ring

    SERVICE MANUAL 10.3.5 Microphone switch and Light-ring Press the microphone button on the Delegate/Chairman Unit. The Light-ring must lit now (M70 related to M8 (0V) should be between 7.0V and 9.0V) 10.3.6 Internal signals for Delegate and Chairman units. Power reset Decrease the power supply of the CPSU which is connected to X10 so that V+ related to M2 (GND) is successively +15V and 12.8V.
  • Page 32 SERVICE MANUAL Maximum number (1,2,3 or 4) of Delegate units which can be activated at the same time (MAXNOM). Connect at least two Delegate units to the CPSU. • Set the Mode switch at the CPSU in the Auto-1 mode. •...

  • Page 33: Priority Switch (Only For Chairman Units)

    SERVICE MANUAL Delegate microphone permanently off when pressing the priority button at the Chairman unit(s) (RMO) • Connect a Delegate and a Chairman unit to the CPSU. • Set the Microphone switch of the chairman unit (see Priority button) in position 1. •...

  • Page 34: Measuring Spots With Signal Description

    SERVICE MANUAL 10.4 Measuring spots with signal description Measuring Signal spots AUDIO-CONTR system GND AUDIO-DISTR CTRL-L1 CTRL-L2 internal 0V POWER-RESET +15V TEST AUTO TRMO- MAXNOM- RMO/TRMO MIC-KEY chime disable/enable PRIORITY-KEY X5 (LSP) X5 (LSP) HEADPH MIC-LED MIC-IN mic-amplifier out CHIME auto shut-off time M100 UNITTYPE...

  • Page 35: Spare Parts

    Spare parts 11.1 General policy Repair of that CCS 800 units is based on replacement of complete assemblies. Only a selection of components are Service available as spare parts. Complaints The Philips Service organizations are requested to report defective modules and quality matters according the CSS complaint procedure to the Supply Centre.
  • Page 36 SERVICE MANUAL FLAT CABEL ASSY 2X10P 240MM 5322 320 12373 SN 0,14MM2 PVC RD SN 0,14MM2 PVC ZW FOOT BOTTOM FF-003-P3X5,5 RICHCO 5322 462 11084 TOOTED RING ST ZN 3,2 TYPE PLATE CABEL ASSY (CCU-PSU) MAINS CORD 2MTR, EUR VERSION 5322 321 11422 MAINS CORD 2MTR, USA VERSION 5322 321 11423...
  • Page 37 SERVICE MANUAL LOUDSPEAKER PF302 5322 240 30708 LOUDSPEAKER SPRING 5322 492 11411 LOUDSPEAKER CABLE ASSY 5322 320 11887 18- 21 MICR. STEM CCS800 COMPLETE FOR SERVICE 5322 242 10918 18- 21 LONG MICR. STEM CCS800 COMPLETE FOR SERVICE 5322 242 10919 MICROPHONE HAED ASSY CCS800 ADAPTION PIECE MICR.
  • Page 38 SERVICE MANUAL Printed boards spare parts POTM.10KA RK09L1140 5322 101 11763 PRESET POTM.EMP 10 10K 5322 101 10714 TACK SWITCH SKEVAD 5322 276 13533 TACK SWITCH SKEVAD 5322 276 13533 SLIDE SWITCH 2-POS. 5322 277 11793 SLIDE SWITCH 2-POS. 5322 277 11793 OUTPUT TRANSFORMER 0,1W 5322 146 11015 WIRE TO BOARD CONN 8P...

  • Page 39: Illustrations

    SERVICE MANUAL Illustrations Index 12.1 Block diagram CPSU 12.2 Exploded view CPSU 12.3 Layout 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...
  • Page 40 SERVICE MANUAL 12.1 Block diagram CPSU LBB3310/00 Central Control Unit CCS800 Microphone in (balanced) Telephone out Microphone gain Line out Line in Recorder in Recorder out Rec. gain Telephone in Insertion Insertion out Insertion on/off Headphone Volume Volume contribution units Monitor Trunk 2 Trunk 1...
  • Page 41 SERVICE MANUAL 12.2 Exploded view CPSU LBB 3310/00, 3330/00 and 3331/00 page: 39 Date of issue: 4822 861 11006 July 1998...
  • Page 43 SERVICE MANUAL 12.3 Lay-out CPSU LBB 3310/00, 3330/00 and 3331/00 page: 40 Date of issue: 4822 861 11006 July 1998...
  • Page 44 SERVICE MANUAL 12.4 Circuit diagram CPSU CPSU-CTRL (PART-A) cpsu_acl.cdr LBB 3310/00, 3330/00 and 3331/00 page: 41 Date of issue: 4822 861 11006 July 1998...
  • Page 45 SERVICE MANUAL Tel-out Line-out REC-OUT CPSU - CTRL (Part B) cpsu_bcl.cdr LBB 3310/00, 3330/00 and 3331/00 page: 42 Date of issue: 4822 861 11006 July 1998...
  • Page 46 SERVICE MANUAL 12.5 Measuring points CPSU LBB 3310/00, 3330/00 and 3331/00 page: 43 Date of issue: 4822 861 11006 July 1998...
  • Page 47 SERVICE MANUAL 12.6 Block diagram delegate unit LBB3330/X0 Delegate Unit CCS800 Headphone 1 Volume Headphone 2 Mic. gain headphone preset Auto Microphone off after 30sec. ± 10sec. Timer Trunk in Trunk out Audio distribution Audio distribution Audio Audio contribution Logic Mic.
  • Page 48 SERVICE MANUAL 12.7 Block diagram chairman unit LBB3331/x0 Chairman Unit CCS800 Headphone 1 Volume Headphone 2 headphone Mic. gain preset Chime Mic. return Chime enable preset preset Trunk in Trunk out Audio distribution Audio distribution Audio Audio contribution Logic Mic. on Control 2 contribution Control 1...
  • Page 49 SERVICE MANUAL 12.8 Exploded view delegate/ chairman unit LBB 3310/00, 3330/00 and 3331/00 page: 46 Date of issue: 4822 861 11006 July 1998...
  • Page 50 SERVICE MANUAL 12.9 Lay-out delegate unit LBB 3310/00, 3330/00 and 3331/00 page: 47 Date of issue: 4822 861 11006 July 1998...
  • Page 51 SERVICE MANUAL 12.10 Lay-out chairman unit LBB 3310/00, 3330/00 and 3331/00 page: 48 Date of issue: 4822 861 11006 July 1998...
  • Page 52 SERVICE MANUAL 12.11 Circuit diagram delegate unit Delegate dele_cil.cdr LBB 3310/00, 3330/00 and 3331/00 page: 49 Date of issue: 4822 861 11006 July 1998...
  • Page 53 SERVICE MANUAL 12.12 Circuit diagram chairman unit Chairman chai_cil.cdr LBB 3310/00, 3330/00 and 3331/00 page: 50 Date of issue: 4822 861 11006 July 1998...
  • Page 54 SERVICE MANUAL 12.13 Measuring points delegate and chairman unit LBB 3310/00, 3330/00 and 3331/00 page: 51 Date of issue: 4822 861 11006 July 1998...
  • Page 55 SERVICE MANUAL 12.14 Circuit diagram Light-ring PINK GRAY BLACK BLACK PINK GRAY BLACK BLACK LBB 3310/00, 3330/00 and 3331/00 page: 52 Date of issue: 4822 861 11006 July 1998...
  • Page 56 4822 861 11006 98-30 © 1998 Philips Electronics N.V. Data subject to change without notice...

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