Marantz-RC3200-rem-sm 维修电路原理图.pdf

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1、Service ManualPublished by MD 0312 RCS Service Subject to modification3104 205 5002.3UNIVERSAL HOME THEATER Remote controlRC3200/ARC3200/U1SRC3200/M1STABLE OF CONTENTSChapterSpecification / Service hints .1Dismantling hints .2Circuit description . 3Troubleshooting .4Electrical diagram .5Assembly dia

2、gram .6Exploded view .7Partslist .8 Royal Philips Electronics NVAll rights are reserved. Reproduction in whole or in part is prohibitedwithout the prior written consent of the copyright owner.marantzRadioFans.CN 收音机爱 好者资料库SPECIFICATIONS1-1DisplayMonochrome touch screen LCD with 4 gray levels anddigi

3、tal contrast control.Resolution: 160 x 100 pixelsBlue EL backlighting for LCD and hard buttonsInterface3-wire (RS232) serial port connectorSoftwareBuilt-in Marantz RC codesTotal number of devices limited only by memoryInfrared (IR)Infrared sending LED and learning eyeOperating distance of 33 feet (1

4、0 meters)Learning frequency up to 56 kHz and 455 kHzLearning distance 1 inch (2 cm) up to 4 inch (10 cm)2-way communication with specific marantz equipmentMemory1 MB non-volatile flash memoryBatteries3 AA-batteries (3 x 1,5V): primary or rechargeablePower managementPower on by tapping the LCD touch

5、screen or by pressingthe Backlight buttonPower off automaticallyDimensions7.8 inch x 3 inch x 1.3 inch (177mm x 74mm x 33mm)Operating temperature 41F to 113F (5C to 45C)Accessoriesonly for RC3200/U1S/M1S only RS3200/ARS232 cable for PC connectionNoneIFU RC32003 AA-batteriesSERVICE HINTS-RC3200 infor

6、mationPress and hold the Mode button for 3 seconds -Tap SETUP - go to page3/3 with page up or page down button.This page contains following information:Free memory :Boot version :System version :Application version :Configuration file :-Cleaning RC3200Use a soft, damp cloth to clean the RC3200If the

7、 LCD touch screen is dirty, clean it with a soft cloth moistened with a diluted window-cleaning solution.After a repair please make the LCD touch screen always clean !-Update the RC3200Please check after each repair the RC300 application version.Check the version on the website. Is the version highe

8、r on the website, please download the new version fromthe Firmware.You can find this on the Marantz website http:/RadioFans.CN 收音机爱 好者资料库2-1DISMANTLING HINTS1. Remove battery lid2. Remove label a little. see picture13. Remove 3 x screw as shown in picture 1picture 14. Put a sharp knife between toppa

9、rt and bottompart and use this as lever to separate the two parts. see picture 2picture 22 x 8mm2 x 8mm2 x 8mm3-1CIRCUIT DESCRIPTION1Power supplyComponents: 7201The power supply makes use of the LT1761 low drop linear regulator of Linear Technologies. The output voltage is 3.3V.2Reset & delayed rese

10、t.Components:-reset: 7202-delayed reset: around 7203, 7204The S-809 (Panasonic) detects the hardware reset level of the batteries. Below this level (2.8V) reset is passed to the“delayed reset” circuit.The “delayed reset circuit” is activated by the S-809 or the reset switch 1203. It will delay the r

11、eset signal by approx. 80ms andhas a hysteresis of 200mV3Battery level measurementComponents: around 7206, 7207The battery voltage is measured via a 1:2 divider by the master microcontroller. This divider is switched on/off by the masterby means of 7206 and 7207.4EL-foil driverComponents: around 720

12、5The EL-sheet is driven by the D371 (Durel). This component generates a high-voltage semi sinewave by switching a coil of2.2mH. It contains 2 oscillators: a high-frequency oscillator switching into the inductor at approx. 17kHz. A low-frequencyoscilator drives the EL-sheet at approx. 500Hz. The EL-s

13、heet is driven with approx. 75Vpeak.Zener diodes 6208 and 6209 limit the sinewave voltage when no sheet is attached (during repair of the unit).5+/- 17V generatorComponents: around 7210The + and - 17V are generated by the MC64063A, a DC-to-DC converter who is used in a step-up configuration.The swit

14、ching frequency ranges up to 150kHz (depending on the load) with ringing on the edges of approx. 3MHz.The generator is switched on/off via 7208 and 7209 from the master microcontroller.6Master microcontroller & memoriesComponents: 7101, 7115, 7103, 7102The master is the main microcontroller in the s

15、ystem (M30800, Mitsubishi). It uses external flash program memory(AM29LV800BT, AMD) and SRAM (CY62256V, Cypress). Address selection is performed with 74LV139.The master runs from two crystals: 7.3728MHz, onlu runing when active. The other crystal of 32.768kHz is always running,even in sleep mode.7Bu

16、zzerComponents: around 1103The sound function is made by a piezo-electric buzzer. The steering frequency range is 200Hz 8kHz.8RS232 transmitterComponents: around 7105, 7106This circuit converts the RS232 outgoing signal from the master between 0 and 3.3V to -15 and +15V levels.RS232 communication is

17、 set at 115kBaud both directions.9RS232 receiver & detection.Components: around 7107, 7108, 7109Transistor 7107 converts the incoming RS232 signals between -/+15V into 0-3V levels towards the master.Transistors 7108 and 7109 perform a RS232 incoming signal detection and interrupt the master during s

18、leep mode whencommunication starts from a connected PC.10Touchscreen.Components: around 7111, 7112, 7113, 7114A resistive touchscreen is used, composed of two layers of resistive material. Pressing the screen causes a short-circuitbetween the two layers.The touchscreen is operated in two steps:1. de

19、tection of a touch2. reading of the actual position of the touchDetection is done by connecting one layer to ground and the second layer to 3.3V with a pull-up resistor. The voltage on thesecond layer will change from 3.3V to 0V when touching.Readout is performed in 2 phases, each determining one co

20、ordinate.First, layer 1 is connected between 3V3 and ground. The potentiometric position of the touch location can be read bymeasuring the voltage on the layer 2.The other coordinate is read by interchanging the layers in previous procedure.CIRCUIT DESCRIPTION3-211LCDComponents: 1101The LCD module (

21、Wintek) is a STN type 100 x160 pixel including the driver HD66421 of Hitachi. The touchscreen is glued ontop the the LCD module.The LCD module uses a 8 bit bus directly iterfacing to the databus of the master.It uses two voltages: 3.3V for the logic and 17V for the LCD glass drive.The LCD driver use

22、s a clock of approx. 190kHz to generate all timing.12KeyboardComponents: 0102, etc.The keyboard is a matrix of 6 x 3 keys. It is static when no key is pressed, and scanned when a key is applied.13Slave microcontrollerComponents: 7301The slave microcontroller M37540M4 (Mitsubishi) takes most of the r

23、eal-time functions: IR-sending, IR learning and steeringthe database microcontroller.Sending IR is performed via pins 28 and 29, combining envelope and carrier with AND-gate 7302.Transistors 7303 and 7304 combine the IR-sending signals from slave uC and database uC towards the IR-transmitter circuit

24、.The salve uC also switches on/off the power of the learing circuit via 7305.Bidirectional communication to the master uC goes via a UART at 57kBaud.Communication to the database uC goes via a 3-line dedicated bus.14 Infrared transmitterComponents: around 7307, 7308The IR-transmitter transmits any I

25、R-code coming from slave or database uC.It steers two IR-transmission diodes with a peak current of approx. 300mA in each of them.The IR-diodes transmit invisible infrared light at 940 nm in an angle of 2 x 25 degr.An electrolytic capacitor of 100uF smoothen-out the carrier frequency in order to hav

26、e only the average current flowing fromthe batteries (envelope of the IR-code).There are many many brands with each several IR-codes. Basically, all codes consist of a low bitrate burst (around 1kbit orslower) modulated on a carrier of 30 - 60kHz, and repeated at a rate of 5 - 20Hz.15Learning circui

27、tComponents: around 7309, 7310This circuit is used for learning IR-codes. It uses signals captured by the IR-transmission LEDs 6301and 6302. Transistor7309 amplifies the signal. Opamp LM393-B puts a minimum threshold and amplifies further. The output of LM393-B containsthe carrir frequency and is fe

28、d to the slave IC for carrier frequency measurement. The output is also fed onto a detector. Thishas a time constant suitable to detect to the envelope signal of the IR-code. Opamp LM393-A cleans up and its output is fedalso into the slave uC for envelope recording.16IR - ReceiverInfrared receptor 6

29、306 and surrounding components17Not impemented functions (in circuit diagram)Some of the parts in the circuit diagram are actually not stuffed on the board. RS transmitter module 1301Overview of frequenciesEL-foil driver D371A: 17kHz, 500Hz (75Vpeak)+/-17V generator: 150kHz, 3MHz ringingcrystals mas

30、ter uC: 7.3728MHz, 32.768kHzresonator slave uC: 3.64MHzresonator database uC: 4MHzRS232 speed: 115kBaudbaudrate between master & slave uP: 57.6kBaudLCD internal clock: 190kHzIR-transmission: carrier frequencies: approx. 30 - 60kHzList of EMC-critical componentsCritical components for EMC are:The EL-

31、foil generator (high voltage)All crystalsThe data & address busses of the master uC to the Flash, SRAM and LCD moduleThe IR-transmitter (high current)4-1TROUBLESHOOTINGGeneral ProblemsThe display stays blank or becomes black Make sure the batteries are properly installed. Press the Backlight button

32、to make sure RC3200 and the backlight areturned on.See Turning on the Display and the Backlight Adjust the contrast using the Backlight button and the Page Up or Page Downbuttons on the left side of RC3200 SeeChanging the LCD ContrastThe display is too light or too dark Adjust the contrast using the

33、 Backlight button and the Page Up or Page Down buttons on the left side of RC3200. SeeChanging the LCD ContrastRC3200 shuts off automatically This is a timeout feature of the RC3200 to save power. You can change the time RC3200 stays on in the Settings.SeeAdjust the LCD TimeoutDevices do not respond

34、 to commands from RC3200 Make sure RC3200 is in Use mode. See Working with Modes Make sure RC3200s sending LED is pointed towards the device youre operating. Check if the battery level is low. If so, replace the batteries. Check that you have correctly learned the IR commands. See Tricks for Remote

35、Controls that are “Difficult” If the button is programmed with a macro, and all other buttons are working correctly, reprogram the macro SeeRecordingMacrosRC3200 does not learn commands from an existing remote control Do not learn commands directly under fluorescent lights. Do not learn commands on

36、a reflecting table surface. Check if the battery level is low. If so, replace the batteries.RC3200 is not recognized by the RC3200 Setup Programmimg Software software Make sure the serial cable is properly connected. See RC3200 Setup Programming Software Disconnect other equipment connected to the s

37、erial ports, e.g. PDAs. Plug the serial cable in another serial port. Try to connect multiple times.Programming ProblemsButtons are not sending the correct commands Check whether the button of the device is learned properly. See Learning From Other Remotes Check whether the macro is recorded properl

38、y. See Recording MacrosRC3200 will not switch modes Replace the batteries. When the batteries are low RC3200 prevents you from switching to customizing modes so that nocustomization can get lost.RC3200 is low on memory Revert the RC3200. See RevertThe configuration file is corrupted When this unlike

39、ly event occurs, you have to revert to the original configuration or use RC3200 Setup ProgrammingSoftware to download a new configuration file. All your customized commands and devices will be lost and you will have toreprogram your RC3200. If you use RC3200 Setup Programming Software, it is advised

40、 to make backup copies of yourcustomized configurations. See Revert and RC3200 Setup Programming SoftwareRC3200 error messageIf the error message Invalid CF version or corrupt Flash! occurs: Use the Reset button on the back of the RC3200. See How do I reset the RC3200? Try to recover the RC3200 Conf

41、iguration File (NCF) by downloading a backup copy or the default file from RC3200 SetupProgramming Software. See RC3200 Setup Programming Software Go to the Marantz website http:/ for more information.- Turning on the Display and the BacklightRC3200s display can be activated in three different ways:

42、Tap the touch screen gently with your finger or a blunt, soft object like a pencil eraser.The display is activated. Press any button on the RC3200.The display is activated. Press the Backlight button on the left side of the RC3200.The display and the backlight are activated.If the LCD touch screen s

43、tays blank or becomes black when turning on the display, read the next section Changing the LCDContrast to adjust the contrast of the LCD touch screen.Note: RC3200 has a timeout feature: the LCD touch screen and the backlightautomatically turn off to save power. See Adjusting the Settings to adjust

44、the timeout for the LCD and the backlight.- Changing the LCD ContrastTo adjust the LCD contrast on the touch screen:1 Press and hold the Backlight button.The screen lights up.2 While still holding the Backlight button, press the Page Up button onceto increase the LCD contrast one level.The LCD contr

45、ast is adjusted one level up.orPress the Page Down button once to decrease the LCD contrast onelevel.The LCD contrast is adjusted one level down.3 Release the Backlight button when the contrast is satisfactory.The LCD contrast can be adjusted 16 levels.Note: To adjust the contrast multiple levels, y

46、ou have press the Page Up or Page Down button multiple times. When you pressand hold the Page Up or Page Down button, the LCD contrast will only change one level.- Operating DevicesTo operate devices on your RC3200 you have to switch to the Device overview. This screen displays the available devices

47、 likeTV, VCR, DVD, PreAmp and so on.- Adjusting the SettingsThe RC3200 settings can be adjusted in the Setup mode. Press and hold the Mode button for 3 seconds.- Adjust the LCD TimeoutThe LCD timeout indicates how long the LCD touch screen stays active before it turns off. The LCD will only time out

48、 whenyou dont touch any buttons. You can set the timeout between 1 second and 120 seconds.Press + to increase or - to decrease the time the LCD stays active.Tap + or - once to adjust the timeout 1 second up or down.Press and hold + or - to adjust the timeout per 10 seconds up or down.- Working with

49、ModesRC3200 starts up in Use mode. In this mode you operate your devices. For customizing the RC3200 (adjusting the settings,defining brands, learning buttons, labeling buttons and devices or recording macros) you have to switch to the appropriatemode via the menu that appears when you press and hol

50、d the mode button.The RC3200 can be put into 4 different modes. These modes are:Use mode: Normal operating. See Operating DevicesSetup mode: For changing the RC3200 system settings. See Adjusting the Settings for more details.Learn mode: For learning commands from other remote controls. See Learning