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5-2

Troubleshooting

Boot Block

Boot Block

Use the PC2’s Boot Loader to enter Diagnostics or perform a Hard Reset to the unit. You can also
install operating system updates and ROM objects into Flash ROM.

Entering the Boot Block

Apply power to the unit. When the

Please wait...

message appears in the LCD, quickly

press and release the

Panic

button for PC2 keyboard units or

Edit

button for PC2R rack units.

The LCD displays the main menu of the Boot Loader and the

ﬁ

rst available option. Use the

Left

or

Right

cursor button to advance to the next option. The menu options are as follows:

Install Engine

—Installs new operating system software upgrades.

Install

ROM

option

—Loads Sound ROM presets after installing a Sound ROM option.

Update

boot

block

—Installs boot block updates.

Run

diagnostics

—Enters the diagnostic test menu. For a complete list of tests and the procedure

to execute the diagnostic tests, refer to Chapter 2,

Diagnostics

.

Run

engine

—Exits the boot block and returns the unit to normal operation.

Hard

RESET

—Clears the memory to factory default settings.

Resets

Hard Reset

There are two ways to perform a Hard Reset to the PC2.

1. Press the

Global

button and press the

Right

cursor button to step through the Global

parameters to

Reset

PC2?

and press the

Enter/Yes

button. The LCD displays an

Are you sure?

message. Press the

Enter/Yes

button to continue or the

Cancel/No

.

2. Enter the Boot Loader and press either the

Left

or

Right

cursor button to scroll through

the menu. Press

Enter

to select Hard Reset. The LCD displays an Erase RAM objects?

message. Press the

Right

button to execute the hard reset. Press the

Left

button to cancel.

Soft Reset

The Soft Reset does not erase user programs and setups and is equivalent to turning the power
off and on. To Soft Reset a PC2R, simultaneously press the

FX

,

MIDI Receive

and

Global

buttons. To Soft Reset a PC2, simultaneously press the

+/-

,

0

and

Clear

buttons.

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Содержание PC2 Series

Страница 1: ...ct line of Young Chang Co Kurzweil is a trademark of Young Chang Co All other products and brand names are trademarks or registered trademarks of their respective companies Product features and speci...

Страница 2: ...trip over walk on or roll anything over cords of any type Do not allow the product to rest on or be installed over cords of any type Improper installations of this type create the possibility of a fi...

Страница 3: ...Music Corp P O Box 99995 Lakewood WA 98499 0995 Tel 253 589 3200 Fax 253 984 0245 Young Chang Akki Co Ltd 178 55 Gajwa Dong Seo Ku Inchon Korea 404 250 Tel 011 82 32 570 1380 Fax 011 82 32 570 1218 Yo...

Страница 4: ......

Страница 5: ...1 7 Chapter 2 Diagnostics Diagnostic Tests 2 1 Entering Diagnostics 2 2 Diagnostic Test Modes 2 2 Run One Test 2 2 Run Burn in 2 3 Test Results 2 3 Description of Tests 2 4 ROM 2 4 Read write 2 4 RAM...

Страница 6: ...oving the Headphone Volume Power Switch Board 3 14 Replacing the Headphone Volume Power Switch Board 3 14 Chapter 4 PC2 PC2X Disassembly Assembly Introduction 4 1 Notes Cautions Warnings 4 1 Cables Co...

Страница 7: ...4 Replacing the Bass Contact Board 4 24 Removing the Keyboard Contact Strips 4 25 Replacing the Keyboard Contact Strips 4 25 PC2X Keyboard Assembly 4 26 Removing the PC2X Keyboard Assembly 4 26 Replac...

Страница 8: ...heel 5 7 Front Panel Knobs 5 7 PC2 Keyboard Models 5 8 Front Panel Buttons 5 8 Alpha Wheel 5 8 Front Panel Sliders 5 8 Wheels 5 9 Keyboard 5 9 Switch Pedals 1 2 and 3 5 9 Continuous Pedals 1 and 2 5 9...

Страница 9: ...d Lisa F X 128Ch Option Clocks page 3 of 5 7 5 Engine Board Sound ROM Uart Glue Decoupling page 4 of 5 7 6 Engine Board Audio Channel Muting Control page 5 of 5 7 7 Front Panel and IBBB Board keyboard...

Страница 10: ...Kurzweil PC2 Series Service Manual Contents vi...

Страница 11: ...are three models in the PC2 series The available models are listed below PC2 76 note keyboard PC2X 88 note keyboard PC2R rack mount Notes Cautions Warnings Please pay special attention to all Notes C...

Страница 12: ...can be assigned to control operations such as sustain sostenuto etc use 1 4 tip sleeve Continuous Control Pedals Two 1 4 jacks to connect pedals that can be assigned to control operations such as volu...

Страница 13: ...A Select Wet Dry FX B Select FX Mode L o w M i d H i g h Main Layer Split Split Layer Octave Shift Split Point Mute A Mute B Zone Select and Assignable Controllers Sound Setup Select Zone Parameters...

Страница 14: ...in this section represents a menu of available parameters for use while editing programs in the Internal Voices and KB3 modes Functions Use the buttons in this section while editing programs or settin...

Страница 15: ...s Figure 1 6 Data Entry section Data Entry This section contains the Alpha Wheel Minus and Plus buttons and the Alphanumeric keypad Use the Alpha Wheel or the Minus and Plus buttons to increase or dec...

Страница 16: ...Figure 1 8 PC2R Front Panel Digital Out In Thru Out Thru Out L R MIDI Audio Outs Manufacturer Young Chang Co Ltd Serial No Designed in USA Made in R O K THIS DEVICE COMPLIES WITH PART 15 OF THE FCC R...

Страница 17: ...each performance mode follows Internal Voices mode selecting the Split button switches to AutoSplit mode and adds a new sound below a preset split point MIDI Setups mode Zone 3 selecting the Split but...

Страница 18: ...and Global are also included in this section The special mode buttons perform as follows press the FX button to enter the effect edit mode press the MIDI Receive button to con gure individual MIDI cha...

Страница 19: ...ROM ZRAM MIDI LED If a PCX 1 Board is installed the following tests are also available PCX 1 ROM PCX 1 RW PCX 1 RAM PCX 1 MABEL PCX 1 SROM Warning Some diagnostic tests erase user programs and setups...

Страница 20: ...er button 4 The LCD displays the following Figure 2 2 LCD example diagnostic main menu 5 Press Enter to select the run one test mode To select the run burn in test mode press either the Left or Right...

Страница 21: ...he Cancel button Use the Left or Right cursor button to scroll through the results of each test To exit Run Burn in and return to the main menu press the Cancel button To exit diagnostics turn the pow...

Страница 22: ...at the write was successful A failure of this test may indicate a problem with the RAM or related circuitry on the Engine Board MABEL This test performs a read write of the MABEL registers and veri es...

Страница 23: ...r MIDI circuitry or a problem on the Connector Board or the Engine Board LED This test lights all the front panel LEDs To complete the test and obtain the test result press the Cancel button When the...

Страница 24: ...lure of this test may indicate a problem with a MABEL associated circuitry or the PCX 1 Board PCX 1 SROM The PCX 1 SROM test veri es that the PCX 1 MABELs can read the Sound ROMs by performing a check...

Страница 25: ...the clips when connecting cables Flat ribbon cables that connect to pico ex connectors do not have locking cable clips Some at ribbon cables have exposed wires that insert directly into a wire trap c...

Страница 26: ...side and two on the rear See Figure 3 1 Figure 3 1 PC2R top cover 1 Remove the seven screws that secure the top cover Figure 3 2 Removing the top cover 2 Refer to Figure 3 2 Slide the top cover back...

Страница 27: ...ove the two screws that secure the MIDI jacks to the rear panel 7 Remove the two nuts that secure the 1 4 audio out jacks to the rear panel 8 Remove the three screws that secure the Connector Board to...

Страница 28: ...of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly...

Страница 29: ...yphony Expansion Board PCX 1 Replacing the Polyphony Expansion Board PCX 1 There are two cables routed underneath the PCX 1 Board a at ribbon cable from the LCD to the Engine Board and a stranded wire...

Страница 30: ...emove the cable locking clip and disconnect the at ribbon cable from location J406 on the Engine Board Be sure to set the cable locking clip safely aside so that you can install it when you reconnect...

Страница 31: ...he wire trap connectors and push down the sides of each connector to lock the cable into the connector Gently pull each cable to verify that it is locked into its connector Insert the ve wire at ribbo...

Страница 32: ...sure 1 Tilt up the front edge of the PC2R 2 Using a 1 screwdriver remove the four screws that secure the Front Panel Assembly to the bottom enclosure Note Before continuing be sure that you have a sof...

Страница 33: ...Panel Assembly Note Verify that the rotary potentiometers jacks and switch button caps are correctly positioned through their openings in the front panel faceplate Turn the rotary potentiometers to b...

Страница 34: ...Caution Do not wiggle the connector back and forth Doing so could cause damage to the header Note Be aware of the marking red or black on the cable that indicates the connection to Pin 1 you ll need t...

Страница 35: ...dicates the connection to Pin 1 on the board to prevent damage to the header or a failure caused by an improper connection 6 Follow the procedure on page 3 8 to install the Front Panel Assembly Removi...

Страница 36: ...e uses a pico ex molex connector To disconnect it grip the connector and pull it out straight Caution Do not wiggle the connector back and forth Doing so could cause damage to the header Note Be aware...

Страница 37: ...screw that secures the front panel faceplate 4 Connect the at ribbon cable from the Right Front Panel Board to the Left Front Panel Board location J603 Caution The side walls of the pico ex header ar...

Страница 38: ...ower Switch Boards To remove the board desolder this connection from the Headphone Volume Power Switch Board Note This illustration shows the Headphone Volume Power Switch Board lying at to indicate t...

Страница 39: ...PC2X keyboard Cables Connectors Flat Ribbon Cables All at ribbon cables with connectors are keyed and therefore cannot be reversed Most at ribbon cables have locking cable clips Be sure to reapply th...

Страница 40: ...your work surface 3 Move the unit so that the rear panel portion of the unit hangs over the edge of your work surface This gives you access to the seven screws that secure the rear panel portion of t...

Страница 41: ...work surface 3 Move the unit so that the rear panel portion of the unit hangs over the edge of your work surface This gives you access to the nine screws that secure the rear panel portion of the top...

Страница 42: ...move the endcap locking bracket screw the bracket remains loosely in the endcap assembly Set the endcap safely aside Repeat for the other endcap 5 Refer to Figure 4 4 The bottom edge of the rear panel...

Страница 43: ...the top enclosure and rotate it back approximately two inches This separates the bottom edges of the top enclosure and bottom enclosure 7 Lift the top enclosure straight up 8 Turn the top enclosure ov...

Страница 44: ...eps 3 and 4 separately Combining these steps could cause the top enclosure to ip away from the bottom enclosure or off of your work surface 4 Move the unit so that the rear panel edge of the unit hang...

Страница 45: ...pport Walls are also included on the top enclosure Figure 4 5 shows the placement of the enclosure support walls Figure 4 6 shows the placement of the boards Figure 4 5 Top enclosure enclosure support...

Страница 46: ...e Right Enclosure Support Wall 1 Align the center screw holes of the three hole groupings in the right enclosure support wall with the thread marks in the extrusion 2 Install the six screws that secur...

Страница 47: ...unlocks the trap to free the cable wires Gently pull each cable up out of the connector Note the marking red or black on each cable that indicates the connection to Pin 1 you ll need to reconnect the...

Страница 48: ...onnector Gently pull each cable to verify that it is locked into its connector Insert the ve wire at ribbon cable from the Engine Board into the wire trap connector at J302 on the Connector Board Inse...

Страница 49: ...at location J604 was disconnected following the procedure to remove the Connector Board It is not necessary to disconnect it from the Front Panel Board However if you are replacing the Front Panel Bo...

Страница 50: ...board with the thread marks in the extrusion and install the two screws that secure the front panel edge See Figure 4 8 3 Place a PC board clamp in position Align the center screw holes of the clamp...

Страница 51: ...Install the four screws that secure it to the front panel bezel 3 Connect the stranded wire cable to J405 on the Engine Board 4 Connect the at ribbon cable to J406 on the Engine Board Be sure to inst...

Страница 52: ...2 use wire trap connectors The shielding has been removed from the end of these cables to expose the wires The wires are inserted directly into these connectors Lift up the sides of each connector Thi...

Страница 53: ...e of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctl...

Страница 54: ...6 Be sure to set the cable locking clip safely aside so that you can install it when you reconnect the cable 7 Two of the screws that secure the left enclosure support wall also secure the front panel...

Страница 55: ...connector are lifted Insert the at ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector Gently pull each cable to verify that it i...

Страница 56: ...following order Caution Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board Make certain that the wires are straight prior...

Страница 57: ...ds and key weights If you need to gain access to the keys only i e key replacement you can do so by following the procedure described on page 4 21 Disconnecting the PC2 Keyboard 1 Refer to Figure 4 11...

Страница 58: ...ds of the at ribbon cables from the keyboard contact boards during service be sure that you have reconnected them and reapplied the tape to secure the connectors 1 Place the keyboard upside down on a...

Страница 59: ...on the bottom enclosure To move the keyboard lift the keyboard up slightly to free the 16 screws from their positions on the bottom enclosure 6 Lift the keyboard up and move it approximately one inch...

Страница 60: ...utlines of the natural and sharp keys and the locations and functions of the components described in the following procedures Natural White Key Figure 4 12 Natural White key 76 note keyboard Figure 4...

Страница 61: ...oard chassis Sharp Black Keys 1 To remove a sharp key rst remove the adjacent natural keys as described in the previous procedure 2 Each key has a spring located at the rear of the key Using needle no...

Страница 62: ...2 Remove the 24 screws that secure the Treble Contact Board to the keyboard chassis and remove the Treble Contact Board Replacing the Treble Contact Board 1 Position the Treble Contact Board on the k...

Страница 63: ...ove a keyboard contact strip gently lift and free the strip from its position Be careful not to rip or damage any contact in the process Figure 4 15 Side view of the natural white key 76 note keyboard...

Страница 64: ...but it has cables connected to the Mod Wheel Assembly and the Connector Board Figure 4 16 PC2X 88 note keyboard bottom 5 Slide the PC2X back onto your work surface 6 Lift the Mod Wheel Assembly and di...

Страница 65: ...cables to the bottom enclosure 4 Lift the Mod Wheel Assembly and connect the Aftertouch ex cables Be sure to reapply the nylon reinforced tape that secures the ex cables to the bottom enclosure 5 Slid...

Страница 66: ...e spring by inserting a dowel 3mm diameter into the spring and pushing down on it slightly Then pull the top of the dowel toward the front of the keyboard This will unhook the spring from the keyboard...

Страница 67: ...ed to the keyboard chassis by a hook Refer to Figure 4 19 You can remove the spring by inserting a dowel 3mm diameter into the spring and pushing down on it slightly Then pull the top of the dowel tow...

Страница 68: ...he tape to free the cable 2 Disconnect the small ribbon cable that connects the Treble and Bass Contact Boards 3 Remove the 26 screws that secure the Treble Contact Board to the keyboard chassis and r...

Страница 69: ...or other damage 2 Follow the procedure to remove the Bass and Treble Keyboard Contact Boards 3 Examine the keyboard contact strips and look at the design of an individual contact The top portion of t...

Страница 70: ...s the bass rod and the second rod is referred to as the treble rod The rst rod the bass rod begins at low A and extends to G above Middle C The second rod the treble rod begins at A above Middle C and...

Страница 71: ...re Note Be sure to place the sharp key weights in the correct positions 3 Place the rod and key weights into position over the support brackets and snap the rod into the support brackets Be certain th...

Страница 72: ...4 34 PC2 PC2X Disassembly Assembly PC2X Keyboard Assembly...

Страница 73: ...ains properly positioned Surface Mount Devices The removal and replacement of surface mount devices requires training and the proper equipment If you do not have the training or equipment to remove or...

Страница 74: ...nd the procedure to execute the diagnostic tests refer to Chapter 2 Diagnostics Run engine Exits the boot block and returns the unit to normal operation Hard RESET Clears the memory to factory default...

Страница 75: ...option keyboard and rack models Installing the Operating System or Setups Warning This procedure requires performing a hard reset All user programs and setups will be erased Before continuing be sure...

Страница 76: ...p and restart the sequence 7 After the le is loaded the unit will reset Installing Sound ROM Options After installing a Sound ROM option the presets need to be transferred into Flash ROM Warning This...

Страница 77: ...he Engine Board and is accessible when the access panel is removed 1 Insert a at plastic tool plastic knife pen cap etc into one of the openings between the battery and the holder to lift the battery...

Страница 78: ...oved 1 Refer to Figure 5 1 Insert a at plastic tool plastic knife pen cap etc into one of the openings between the battery and the holder to lift the battery 2 Ease the battery out of the holder If ne...

Страница 79: ...value it is applicable only to keyboard units The second line shows the results of the current test Figure 5 2 shows the result of the volume potentiometer test To exit the Scanner Tests and return t...

Страница 80: ...line shows the results of the current test Figure 5 3 shows the result of a key test in this case striking the key C4 on the keyboard To exit the Scanner Tests and return to normal operation simultane...

Страница 81: ...result for the front key contact switch and the second is for the rear switch An example of the expected test result for the Middle C key follows KEY C4 60 C4 60 Pressing harder the display will chan...

Страница 82: ...ler connected Connect a pair of headphones turn the power on When the unit is on and ready to play simultaneously press the MIDI Receive and Global buttons to play one of the stored demos Flashing LED...

Страница 83: ...der connections on the LCD and Engine Boards 5 Refer to the Engine Board schematics and check the signal path Buttons Sliders or Controllers not working 1 Run the Scanner Tests Note If you are servici...

Страница 84: ...for keyboard signals 5 Trace signal path 6 Find and replace bad component s or order a board replacement Dead Note s One or More in a Section 1 Remove related contact board 2 Check contact strip for...

Страница 85: ...Pwr Hp J301 PC2 Power J303 MIDI CPU J304 Front Panel J302 Power In LCD Connector Board Engine Board Hp Vol Pwr Sw Board J601 Front Panel J602 FP Bridge J603 FP Bridge J604 FP Bridge 2 Left Front Panel...

Страница 86: ...J302 Audio J602 FP Bridge J601 IBBB J604 Front Panel Wheels J202 J205 Mod J204 Pitch J201 J203 Wheels Board 88 note keyboards only Button Board J101 Slider J102 FP Bridge LCD J403 MIDI CPU J402 PC2 PW...

Страница 87: ...boards and assemblies in common The exceptions are the parts lists for the Final and Keyboard Assemblies PC2 PC2X Printed Circuit Boards and Assemblies PC2R PC2 PC2X All Models PC2 PC2X Keyboard Model...

Страница 88: ...al Assembly page 6 16 N012103802 LCD Board page 6 15 N012300040 Connector Board page 6 13 N012300051 Engine Board page 6 3 N012300070 Front Panel Assembly page 6 14 N012300080 Left Front Panel Board p...

Страница 89: ...TF 110 5 1 16W 0603 T R 1 R28 N051064015 RES TF 1 5K 5 1 16W 0603 2 R64 65 N051064025 RES TF 330 5 1 16W 0603 1 R32 N051064100 RES TF 1K 5 1 16W 0603 T R 4 R5 8 34 68 N051064109 RES TF 1M 5 1 16W 060...

Страница 90: ...TL 24 576MHz 50PPM FND FAR 18PF SMT 1 Y2 N061000802 IC LOGIC FAIRCHILD TI SN74AHCIGO8DBVR 3 U3 4 18 N061000912 IC LOGIC INV TINY UHS UNBUF SOT23 5 2 U12 13 N061007139 IC LOGIC 74VHC139 SOP16 1 U10 N06...

Страница 91: ...D 1 ENTER PC2 X 1 N035026151 BUTTON LG W LED SOLO PC2 X 1 N035026152 BUTTON LG W LED EQ PC2 X 1 N035026153 BUTTON LG W LED SW1 PC2 X 1 N035026154 BUTTON LG W LED SW2 PC2 X 1 N035026155 BUTTON LG W LED...

Страница 92: ...HEADER 1 SP DUAL ROW 20P 057 020 153 3 J304 306 307 N041032305 CONN WIRE TRAP 2 00mmSP 5P 52147 0510 1 J302 N041032306 CONN WIRE TRAP 2 00mmSP 6P 52147 0610 1 J308 N041032307 CONN WIRE TRAP 2 00mmSP...

Страница 93: ...7810 CAP CER X7R 1000PF 50V 10 0603 21 C1 3 6 8 11 14 22 25 27 47 N052007833 CAP CER NPO 33PF 50V 5 0603 2 C4 5 N052901601 CAP ELECT GP 100UF 16V 20 SZC SMT 4 C28 34 36 37 N052901602 CAP ELECT GP 0 19...

Страница 94: ...100310 RES MF 1K 1 1 8W 1 R12 N051100316 RES MF 1 5K 1 1 8W 1 R13 N051100336 RES MF 4 99K 1 1 8W 2 R16 20 N051100354 RES MF 10K 1 1 8W 2 R9 10 N051100379 RES 110K 1 8W 1 2 R6 7 N051100439 RES MF 30 1K...

Страница 95: ...CABLE SLIDER TO CONN BD 7P PC2 X 1 N013041801 CABLE ENGINE TO CONN BD 10P PC2 X 1 N013041901 CABLE ENGINE TO CONN BD 5P PC2 X 1 N013042001 CABLE WHEEL TO CONN BD 6P PC2 X 1 N013042101 CABLE BUTTON BD...

Страница 96: ...N 3M 4 N052001022 ADAPTER 1 N035027013 CHECK PITCH MOD WHEEL 1 N032033713 ENDCAP LEFT 1 N032033813 ENDCAP RIGHT 1 N125223408 TAPPING SCREW 2 BH 3X8 BLK PLASTIC 14 FOR ENDCAPS N215040311 KEYBOARD TP 8R...

Страница 97: ...K KRYBOARD K2500X XS AES 1 N022002703 SPACER PUSH LOCKING 8 0MM TALL 4 N022003714 CABLE CLAMP 14P 1 N022003720 CABLE CLAMP 20P 4 N025224508 TAPPING SCREW 2 BH 3 5X8 WHITE W WASHER 35 N025226508 TAPPIN...

Страница 98: ...N215040413 KEYBOARD TP 10MDF AFT ABS 1 Part No Description Qty Reference Designation PCB KEY CONTACT LOW PCB KEY CONTACT HIGH KEY CONTACT STRIP 12 NOTE BRACKET ROD KEY WEIGHT SUPPORT 12 POS KEY PIVOT...

Страница 99: ...051100011 RES NET QUAD ISO 100 5 1 16W 3 RP6 8 N051101706 RES CF 47 5 1 8W 1206 2 R134 137 N051101708 RES CF 56 5 1 8W 1206 2 R4 5 N051101721 RES CF 270 5 1 8W 1206 1 R6 N051101724 RES 470 5 THICK FIL...

Страница 100: ...31FP 1 U1 Part No Description Qty Reference Designation N025323306 MACHINE SCREW BH 3X6 BLK 7 BRACKET CLAMPING PCB FRONT LEFT RIGHT N025383306 MACHINE SCREW FH M3X6 SMALL 4 FRONT PANEL BRACKET CLAMPIN...

Страница 101: ...600 KEYCAP NO LED PC2R 5 S1 2 9 13 14 N035034000 KNOB ENCODER PC2R 1 SP1 N051101702 RES CF 15 5 1 8W 1206 2 R9 10 N051101703 RES CF 1 5 1 8W 1206 1 R2 N051101757 RES CF 10K 5 1 8W 1206 12 R3 8 11 16 N...

Страница 102: ...R 270mm 1 N013042901 CABLE CONN TO FRONT PANEL 26P PC2R 320mm 1 N013043001 CABLE CONN TO ENG AUDIO 5P PC2R 105mm 1 N022002703 BUTTON SUPPORT DONG A DABS 8R 4 N025223306 TAPPING SCREW 2 BH 3X6 BLK 13 N...

Страница 103: ...ge 2 of 2 page 7 9 Connector Board keyboard models Scanner page 1 of 3 page 7 10 Connector Board keyboard models Digital Interface page 2 of 3 page 7 11 Connector Board keyboard models Power Supply Au...

Страница 104: ......

Страница 105: ...23 A12 22 A13 21 A14 20 A15 19 A16 18 A17 11 VCC1 33 VCC2 7 D00 8 D01 9 D02 10 D03 13 D04 14 D05 15 D06 16 D07 29 D08 30 D09 31 D10 32 D11 35 D12 36 D13 37 D14 38 D15 DGND VCC U5 1M 2MX16 FLASH ROM 14...

Страница 106: ...TAI 64 MDATAO 53 SMA01 52 SMA02 51 SMA03 50 SMA04 49 SMA05 48 SMA06 47 SMA07 46 SMA08 45 SMA09 44 SMA10 43 SMA11 42 SMA12 41 SMA13 40 SMA14 39 SMA15 38 SMA16 37 SMA17 36 SMA18 35 SMA19 34 SMA20 33 SMA...

Страница 107: ...45 DMD 06 46 DMD 07 47 DMD 08 48 DMD 09 49 DMD 10 50 DMD 11 53 DMD 12 54 DMD 13 55 DMD 14 56 DMD 15 57 DMD 16 58 DMD 17 59 DMD 18 60 DMD 19 61 DMD 20 62 DMD 21 63 DMD 22 64 DMD 23 R64 1 5K 1 2 R65 1...

Страница 108: ...2 C28 0 1 uF 1 2 C26 0 1 uF 1 2 C24 0 1 uF 1 2 C20 0 1 uF 1 2 C18 0 1 uF 1 2 C16 0 1 uF 1 2 C37 0 1 uF 1 2 C35 0 1 uF 1 2 C33 0 1 uF 1 2 C31 0 1 uF 1 2 C29 0 1 uF 1 2 C27 0 1 uF 1 2 C25 0 1 uF 1 2 C19...

Страница 109: ...C74 0 1 uF 1 2 C73 0 1 uF 1 2 C62 0 1 uF 1 2 C63 0 1 uF 1 2 C51 47uF 35V 1 2 C50 47uF 35V 1 2 C49 47uF 35V 1 2 C48 47uF 35V 1 2 U25 NE5532 3 2 4 8 1 U24 NE5532 3 2 4 8 1 R32 330 1 2 R35 36 1 8W 1 2 R4...

Страница 110: ...2 S45 TACT 3 2 S63 TACT 3 2 S64 TACT 3 2 S68 TACT 3 2 S67 TACT 3 2 S70 TACT 3 2 S69 TACT 3 2 S65 TACT 3 2 S66 TACT 3 2 S59 TACT 3 2 S58 TACT 3 2 S61 TACT 3 2 S60 TACT 3 2 S55 TACT 3 2 S56 TACT 3 2 S5...

Страница 111: ...A B C D J701 IBBB 5 COL4 1 LEDROW0 2 LEDROW1 3 SWROW0 4 SWROW1 D7 RED 1 2 D6 RED 1 2 S72 TACT 3 2 S71 TACT 3 2 YOUNG CHANG CO LTD of Young Chang Co Ltd is prohibited Reproduction without the express w...

Страница 112: ...P 55 5 P 56 4 P 57 22 R W 24 RESETOUT 23 SYNC 72 VCC 69 VREFADC 68 VREFDAC 32 VSS1 73 VSS2 28 XIN 29 XOUT 67 DAC1 66 DAC2 57 P 00 56 P 01 55 P 02 54 P 03 53 P 04 52 P 05 51 P 06 50 P 07 49 P 10 48 P...

Страница 113: ...2 R95 110 1 2 R93 56 1 2 R99 56 1 2 R102 56 1 2 R94 110 1 2 R69 110 1 2 R66 2 2K 1 2 Q1 MMBT2907 C B E J314 JACK 1 6 2 5 3 4 J313 JACK 1 6 2 5 3 4 J317 JACK 1 6 3 4 J318 JACK 1 6 3 4 J319 JACK 1 6 3 4...

Страница 114: ...C E Q9 MMBT2222 B C E U9 NE5532 3 2 8 4 1 U3 TL072 5 6 8 4 7 D21 LL4148 1 2 D22 S1A 1 2 R118 1 6K 1 2 R19 5 6K 1 2 R18 470 1 2 R117 470 1 2 R122 15 0K 1 1 2 R8 5 6K 1 2 R119 1M 1 2 R129 3K 1 2 R127 3K...

Страница 115: ...J101 SLIDER 1 5VREF 7 AGND 2 CTRL1 3 CTRL2 4 CTRL3 5 CTRL4 6 VSLDR S4 TACT 3 2 S3 TACT 3 2 S2 TACT 3 2 S1 TACT 3 2 D4 DUAL COLOR 2 3 1 D3 DUAL COLOR 2 3 1 D2 DUAL COLOR 2 3 1 D1 DUAL COLOR 2 3 1 YOUNG...

Страница 116: ...0 1uF 50V 20 1 2 R2 1 1 2 D1 RED 1 2 D7 RED 1 2 D3 RED 1 2 D5 RED 1 2 D8 RED 1 2 D4 RED 1 2 D6 RED 1 2 D2 RED 1 2 Q8 MMBT2907 B E C Q6 MMBT2907 B E C Q7 MMBT2907 B E C Q3 MMBT2907 B E C Q4 MMBT2907 B...

Страница 117: ...LL4148 2 1 R21 10K LIN 2 1 3 R22 10K LIN 2 1 3 R20 10K LIN 2 1 3 R19 10K LIN 2 1 3 D11 DUAL COLOR 2 3 1 D19 DUAL COLOR 2 3 1 D17 DUAL COLOR 2 3 1 D15 DUAL COLOR 2 3 1 D13 DUAL COLOR 2 3 1 R17 15 1 2...

Страница 118: ...4 P 03 53 P 04 52 P 05 51 P 06 50 P 07 49 P 10 48 P 11 47 P 12 46 P 13 45 P 14 44 P 15 43 P 16 42 P 17 40 P 20 39 P 21 38 P 22 37 P 23 36 P 24 35 P 25 34 P 26 33 P 27 3 P 30 2 P 31 79 P 32 78 P 33 77...

Страница 119: ...3 12 C47 1000pF 1 2 C56 0 1uF 1 2 C25 1000pF 1 2 C22 1000pF 1 2 C21 1000pF 1 2 C20 1000pF 1 2 C19 1000pF 1 2 C17 1000pF 1 2 C18 1000pF 1 2 D13 LL4148 1 2 R106 3K 1 2 R5 56 5 1 2 R4 56 5 1 2 R6 270 5 1...

Страница 120: ...331 B C E Q14 KSC2331 B C E Q9 MMBT2222 B C E U9 NE5532 3 2 8 4 1 D21 LL4148 1 2 D22 S1A 1 2 R118 1 6K 1 2 R19 5 6K 1 2 R18 470 1 2 R117 470 1 2 R8 5 6K 1 2 R119 1M 1 2 R122 15 0K 1 1 2 R129 3K 1 2 R1...

Страница 121: ...3 6 7 2 AGND RIGHT LEFT J2 PC2R FRONT PANEL VOL PWR HPhones 5 5Vref 1 14VAC 2 14VACSW 3 9VDC 4 9VDCSW 10 7 DGND 8 9 6 WPR J1 Headphone 1 9 8 7 3 2 4 5 6 YOUNG CHANG CO LTD of Young Chang Co Ltd is pr...

Страница 122: ...Kurzweil PC2 Series Service Manual 7 20...

Страница 123: ...4 2 4 19 diagram 88 note keyboard 4 3 4 26 opening 76 note keyboard 4 2 opening 88 note keyboard 4 3 Burn in Tests diagnostics 2 3 Button Test scanner tests PC2 5 8 scanner tests PC2R 5 7 C Cables key...

Страница 124: ...els 3 6 diagram keyboard models 4 16 parts list 6 3 removing keyboard models 4 15 removing rack models 3 6 replacing keyboard models 4 17 replacing rack models 3 6 Entering Diagnostic Tests 2 2 F Fina...

Страница 125: ...r tests PC2 5 9 Polyphony Expansion Board PCX 1 diagram 3 5 removing keyboard models 4 13 removing rack models 3 5 replacing keyboard models 4 14 replacing rack models 3 5 R RAM diagnostic test 2 4 Re...

Страница 126: ...iv Kurzweil PC2 Series Service Manual Y Young Chang Distributors iii Z ZRAM diagnostic test 2 5...

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