May. 2008 DD-7 SERVICE NOTES Issued by RJA Table of Contents Cautionary Notes ..............................................................2 Main Specifications ...........................................................3 Location of Controls .........................................................4 Location of Controls Parts List........................................4 Exploded View ..................................................................5 Exploded View Parts List............................
May. 2008 Cautionary Notes Before beginning the procedure, please read through this document. The matters described may differ according to the model. No User Data This product cannot save user data. Backing up user data during servicing is not required. Parts List A component whose part code is ******** cannot be supplied as a service part because one of the following reasons applies. • Because it is supplied as an assembled part (under a different part code).
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May. 2008 DD-7 Location of Controls fig.panel.eps Location of Controls Parts List No. 1 2 3 4 5 6 7 8 9 10 11 12 13 4 Part Code 75E593C0R0 G2537516R0 13449717 F5029423R0 G2477127R0 F3279852R0 G2477127R0 F3229206R0 F3449150R0 03344701 13449140R0 75E592T0R0 22357304R0 G2217798R0 40125101 Part Name CASE PSA CAUTION ADAPTOR JACK LED ROUND KNOB POTENTIOMETER ROUND KNOB POTENTIOMETER JACK (STEREO+SW) 6.
May. 2008 DD-7 Exploded View fig.bunkai.eps 10 b 11 a 7 a b d 6 2 12 1 9 5 3 4 c 8 Exploded View Parts List No.
May. 2008 DD-7 Parts List fig.-part1-e.eps SAFETY PRECAUTIONS: The parts marked have safety-related characteristics. Use only listed parts for replacement. Due to one or more of the following reasons, parts with parts code ******** cannot be supplied as service parts. • Part supplied only as a component in a complete assembly • Copyright does not permit the part to be supplied • Part is sold commercially NOTE: The parts marked # are new.
May. 2008 DD-7 SCREWS # H5039158R0 40125101 40125134 22137709R0 G2137403R0 H5019413R0 H5029325R0 H5039205R0 H5039510R0 H5039521R0 WASHER M9X14X0.5T THUMB SCREW NYLON WASHER 3X6X0.5 WASHER 9.6X14X1.0 WASHER SCREW M3X10 SCREW 3X6 TOOTH WASHER NUT M9X12X2T NI NUT M7 G2627738R0 G2627793R0 INNER BOX PACKING CASE NI M3X10 FE ZC HALF MOON SHAPE BINDING MACHINE FEBC B1FEBC 9.
May. 2008 Verifying the Version Number 1. Connect an AC adaptor. 2. Turn down all controls all the way counterclockwise. 3. Holding down the foot pedal and inserting a plug into the INPUT jack makes the CHECK LED light up. * Continue holding down the pedal until the LED goes dark. After approximately 2 seconds, the CHECK LED goes dark. * The CPU and DSP checks are performed before the LED goes dark as just described. If a problem is found in the CPU, DSP, or the like, the LED may not go out.
May. 2008 DD-7 Test Mode Items Required • Oscillator x 2 • Oscilloscope x 1 • Noise meter x 2 • AC adaptor (PSA series device or 9 V DC power source) x 1 • Powered monitor x 2 • Expression pedal (EV-5) x 1 • 47-kΩ short plug x 2 Entering the Test Mode 1. Refer to the figure below and connect the measuring equipment to a connector other than the INPUT jack. fig.DD-7-connection.eps Oscilloscope Noise Meter MonitorSpeaker Signal Genelator Power Supply 400Hz 4.
May. 2008 DD-7 4. Test Items 1. VR Check (E.LEVEL) (p. 10) 2. VR Check (F.BACK) (p. 10) Adjust the E.LEVEL control to the 12 o’clock position. With the control turned down counterclockwise all the way, turn it clockwise to the 12 o’clock position, and verify that the CHECK LED goes dark. At the 12 o’clock position, the LED lights up red. fig.DD-7-wave-3.eps_75 3. VR Check (D.TIME) (p. 11) 4. VR Check (MODE) (p. 12) 5. DA Check (EXP [Expression Pedal] Check) (p. 13) 6.
May. 2008 2. 3. DD-7 With the F.BACK control turned down counterclockwise all the way, turn it clockwise to the 9 o’clock position. 3. VR Check (D.TIME) Verify that the CHECK LED goes dark. Make the connections shown below to the INPUT and OUTPUT jacks on the DD-7, using the settings indicated. Turning the control all the way counterclockwise again makes the CHECK LED light up red. fig.DD-7-wave-2.eps_75 INPUT A: Input a rectangular wave at 400 Hz, 800 mVp-p.
May. 2008 5. Turn the D.TIME control clockwise all the way. Verify that while the control is being turned all the way clockwise from the 12 o’clock position, the CHECK LED stays dark. When the control has been turned clockwise all the way, the LED lights up red. DD-7 3. Adjust the MODE knob to the MODULATE position. Verify that waveforms like those shown in the figure below are output. The CHECK LED lights up orange. fig.DD-7-wave-1.eps_75 fig.DD-7-wave-1.eps_75 4. Verify that waveform output stops.
May. 2008 6. Adjust the MODE control to the 200 ms position. Verify that waveform output stops. The CHECK LED goes dark. fig.DD-7-wave-2.eps_75 DD-7 5. DA Check (EXP [Expression Pedal] Check) Make the connections shown below to the INPUT and OUTPUT jacks on the DD-7, using the settings indicated. INPUT A: Input a rectangular wave at 400 Hz, 800 mVp-p. INPUT B: Input a rectangular wave at 400 Hz, 800 mVp-p. OUTPUT A: Connect the oscilloscope. OUTPUT B: Connect the oscilloscope.
May. 2008 5. Depress the toe of the EV-5 pedal all the way. DD-7 3. fig.DD-7-wave-1.eps_75 6. Insert the plug into the INPUT B jack. Verify that the CHECK LED goes dark. Verify that the CHECK LED is lighted up red. fig.DD-7-wave-1.eps_75 Unplug the EV-5 from the jack. 7. DSP Through Check (INPUT A Check) 6. DSP Through Check (INPUT B Check) Make the connections shown below to the INPUT and OUTPUT jacks on the DD-7, using the settings indicated.
May. 2008 3. Insert the plug into the INPUT A jack. DD-7 3. Verify that the CHECK LED lights up orange. Insert the plug into the OUTPUT A jack. Verify that the CHECK LED goes dark. fig.DD-7-wave-1.eps_75 fig.DD-7-wave-1.eps_75 8. DSP Through Check (OUTPUT A Check) 9. DSP Through Check (OUTPUT B Check) & CLIP Check Make the connections shown below to the INPUT and OUTPUT jacks on the DD-7, using the settings indicated. 1.
May. 2008 3. Insert the plug into the OUTPUT B jack. DD-7 6. Verify that the CHECK LED lights up orange. Insert the plug into the OUTPUT B jack. Verify that the CHECK LED lights up orange. fig.DD-7-wave-7.eps_75 fig.DD-7-wave-7.eps_75 4. 7. Adjust the MODE knob to the ANALOG position. Verify that the CHECK LED lights up orange. Verify that the CHECK LED lights up orange. Verify that the waveforms are not clipped. fig.DD-7-wave-7.eps_75 5. Adjust the MODE control to the REVERSE position.
May. 2008 DD-7 Circuit Board (Main Board) fig.b-main.
May. 2008 DD-7 Circuit Diagram (Main Board: Analog) fig.d-main-analog.eps@L MAIN BOARD TP26 R70 39k 2 3 _BYPASS_A AVREF 1 IC4 NJM4558M(TE1) TP8 R62 39k AGND <2C7> <2C7> AVCC TP20 2 3 R86; 100 -> 180 2 R3; 47K R86; 180 R87; 220 -> 39K -> 100 -> 270 TP9 TP40 DGND <2C7> <2C7> DA_A AVREF R101 R23 10k 12k D (0.5%)D (0.5%) C27 0.1uF 4 8 VEE VDD 3.28->3.13 (D) -> 0 R18 10k D (0 5%) TP1 C51 1000pF R83 27k D (0.5%) R75 47k 0 D (0.
May. 2008 DD-7 10u(3216) 1SS387 2SK879-Y 39k 470k TP21 1 470k AVREF R35 1 2 R68 39k 1 3 C17 10uF 1 R64 1 39k TP44 C61 68pF 1 D9 1SS387(TPH3,F) TP22 C76 10uF 16V 1 IC3 NJM4558M(TE1) 2 3 TP32 OUTPUT A R90 100k -> -> -> -> -> AVREF Unpop Unpop Unpop Unpop Unpop C62 22pF 1 C17; D9 ; Q12; R64; R35; Q12 2SK879-Y(TE85L,F) fig.d-main-analog.
May. 2008 DD-7 Circuit Diagram (Main Board: Digital) fig.d-main-digital.eps@L 3 GRY 110mm IC10 TC7W04FK(TE85L/F) D+3.3 SHASSIS VR BOARD PWB F2927058R0 2/6 ASSY 75E593P0R0 C116 0.1uF 5 RST_DCDC <1H7> C122 0.1uF A2 A1 A0 SDA 4 VSS SCL WP IC12 HN58X2402SFPIBEZ 8 IC10 TC7W04FK(TE85L/F) NC A1 A0 SDA SCL WP IC8 HN58X24512FPIE 8 VCC C105 0.
May. 2008 DD-7 fig.d-main-digital.eps@R D+3.3 L5 FBMA-10-160808-601T ESC+1.5 TP91 C86 100uF 4V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 1 10 18 27 35 50 62 83 97 115 123 EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND 1 2 RA5 3 47 4 R126 100k 0.
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