Pioneer XC-IS21MD Service Manual
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Pioneer XC-IS21MD Service Manual

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CD MD TUNER
XC-IS21MD
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
XC-IS21MD
ZYXJ
O
ZVXJ
O
This product is a system(s) component.
This product does not function properly when independent; to avoid malfunctions, be sure
to connect it to the prescribed system component(s), otherwise damage may result.
Component
CD MD TUNER
STEREO POWER AMPLIFIER
SPEAKER SYSTEM
CONTENTS
1. SAFETY INFORMATION ....................................... 2
4. PCB CONNECTION DIAGRAM ........................... 38
5. PCB PARTS LIST ................................................ 52
6. ADJUSTMENT ..................................................... 57
7. GENERAL INFORMATION .................................. 68
7.1 PARTS ........................................................... 68
7.1.1 IC .......................................................... 68
PIONEER ELECTRONIC CORPORATION
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Allexandra Road, #04-01, Singapore 159936
c
PIONEER ELECTRONIC CORPORATION 1999
Power Requirement
DC power supply from other system
DC power supply from other system
System
IS-21MD
XC-IS21MD
M-IS21
S-IS21
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
Service Manual
RRV2124
This service manual
RRV2129
RRV2128
7.2 DIAGNOSIS ................................................... 83
7.2.4 DISASSEMBLY ..................................... 88
7.2.5 PCB LOCATION .................................... 93
T - ZZY APR. 1999 Printed in Japan
ORDER NO.
RRV2124
Remarks
Remarks

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Summary of Contents for Pioneer XC-IS21MD

  • Page 1: Table Of Contents

    PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Allexandra Road, #04-01, Singapore 159936 PIONEER ELECTRONIC CORPORATION 1999 T –...

  • Page 2: Safety Information

    If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. IMPORTANT THIS PIONEER APPARATUS CONTAINS LASER DIODE CHARACTERISTICS LASER OF CLASS 1.

  • Page 3: Exploded Views And Parts List

    Side Pad MR AHA7241 Packing Sheet AHG7053 Packing Case AHD7754 (2) CONTRAST TABLE Battery Cover AZA7331 XC-IS21MD/ZYXJ and ZVXJ are constructed the same except for the following: Part No. Symbol and Description Mark Remarks ZYXJ type ZVXJ type Operating Instructions ARC7255...
  • Page 4 XC-IS21MD 2.2 CD MECHANISM ASSY ÷ CD MECHANISM ASSY PARTS LIST Mark No. Description Parts No. KSS-62A(RP) 8-820-063-(03) Sled Screw Assy X-2646-389-(1) Sled Motor Assy A-4912-199-(A) MD Assy X-2646-482-(1) Geer BN 2-627-761-(02) Rack Spring 2-646-912-(1) Holder 2-648-913-(1) Tapping Screw 2-646-352-01...
  • Page 5 AAA7005 •••••••• •••••••• Jog Escutcheon AAK7620 Screw BBZ30P080FMC Screw VPZ30P100FMC (2) CONTRAST TABLE XC-IS21MD/ZYXJ and ZVXJ are constructed the same except for the following: Part No. Symbol and Description Mark Remarks ZYXJ type ZVXJ type Name Lable AAL7232 AAL7233 Coution Label...
  • Page 6 XC-IS21MD 2.4 EXTERIOR (2/2) Refer to " 2.7 MD MECHANISM ASSY " Note 1 Cutting Position (No.32 (Supporting Mold) Rear Corver Note 1 Cutting Cutting No.32 Note 1...
  • Page 7 XC-IS21MD ÷ EXTERIOR (2/2) PARTS LIST Mark No. Description Parts No. U- COM ASSY AWU7329 MD ASSY AWU7335 AF ASSY AWU7300 R- TERMINAL ASSY AWU7316 FM/AM TUNER MODULE AXQ7068 •••••••• •••••••• Chassis M ANA7087 Rear Panel ANC7735 Shield Plate ANK7059...
  • Page 8 XC-IS21MD 2.5 FRONT PANEL ASSY (1/2)
  • Page 9 XC-IS21MD ÷ FRONT PANEL ASSY (1/2) PARTS LIST Mark No. Description Parts No. FRONT PANEL ASSY AWU7309 CD CLOSE SW ASSY AWU7320 CO OPEN SW ASSY AWU7319 F- TERMINAL ASSY AWU7312 LCD ASSY (MD) AWU7355 LIGHT- L ASSY AWU7321 Lens Holder...
  • Page 10 XC-IS21MD 2.6 FRONT PANEL ASSY (2/2) Refer to Note 1 Cutting Position " 2.2 CD MECHANISM ASSY " (No.13 (Mecha Holder) Note 1 No.13 13 (1/2) (1/2) Cutting No.13 (2/2) 13 (2/2) Note 1...
  • Page 11 XC-IS21MD ÷ FRONT PANEL ASSY (2/2) PARTS LIST Mark No. Description Parts No. CD MOTOR ASSY AWU7318 CD ASSY AWU7306 Slider Motor VXM1033 Motor Shield ANK7067 Motor Pulley PNW1634 Gear Holder AMR7240 Gear A ANW7063 Gear B AMR7260 Gear Pulley A...
  • Page 12 XC-IS21MD 2.7 MD MECHANISM ASSY CN102 CN105 CN101 CN103...
  • Page 13 XC-IS21MD • MD MECHANISM ASSY PARTS LIST Mark No. Description Part No. Mark No. Description Part No. CORE MAIN UNIT ASSY RWZ4334 S. Holder RNK2307 CORE SW UNIT ASSY RWZ4335 Worm Wheel RNK2309 Lead Card 7P RDD1403 Hook RNK2310 Lead Wire...

  • Page 14: Block Diagram And Schematic Diagram

    XC-IS21MD 3. BLOCK DIAGRAM and SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM CN102 VM+5V CN104 HEAD HEAD DRIVER M+5V CORE MAIN ASSY REC HEAD (IC116) HEAD BD7910FV (PB) DADATA PICKUP 4M–DRAM ADDATA ASSY (IC103) (REC) D.GND M5M4V4400CTP-7 1–5, 9–12, 14–18, 22–25 25–28 CN101 D.GND...
  • Page 15 XC-IS21MD SIGNAL ROUTE (CD) : CD AUDIO SIGNAL (REC) VM+5V IC4801 CN4101 VD+5V VA+12V (L1) (TC74HC00AF) VA+5V IC4202 : LINE 1 SIGNAL VD+3V VM+5V (BA4558F) (D.O) (PB) : MD PB SIGNAL (L2) (REC) : LINE 2 SIGNAL (MO) (PB) DA DATA...
  • Page 16 XC-IS21MD 3.2 OVERALL CONNECTION DIAGRAM J102 F-TERMINAL ASSY CN4101 CN104 (AWU7312) J103 J107 J104 AF ASSY (AWU7300) J140 CN40 CN11 J101 CD MOTOR J111 ASSY (AWU7318) CN1301 CD ASSY (AWU7306) CN1101 CN161 J160 CN6201 CN110 CN10 CN70 CN170 LCD ASSY...
  • Page 17 XC-IS21MD Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". R-TERMINAL ASSY CN132 CN131 (AWU7316) CN31 CN32 CN105 U- COM ASSY (AWU7329) CD CLOSE SW ASSY FRONT PANEL ASSY...
  • Page 18 XC-IS21MD 3.3 TUNER ASSY MIX AMP RF AMP (FM) (FM) BUFFER IF AMP FM +B SW (AM) (AM) (AM) (AM) (FM) (AM) AM RF TUNING BLOCK FM/AM TUNER MODULE (AXQ7068) (AM) : AM SIGNAL ROUTE (FM) : FM SIGNAL ROUTE...
  • Page 19 XC-IS21MD CN161 J160 D20PYY1315 (FM) AF AMP (AM) (TX) (TX) (TX) AF AMP CN6201 REGULATOR (AM)
  • Page 20 XC-IS21MD 3.4 U-COM ASSY J160 SIGNAL ROUTE (TX) : TUNER AUDIO SIGNAL CN105 (TX) (TX) U-COM ASSY (AWU7329) CN50 CN150...
  • Page 21 XC-IS21MD CN10 0.47/50 CN110 CN40 PDG241B J140 CN70 CN170 LCD ASSY (AWU7355)
  • Page 22 XC-IS21MD 3.5 AF ASSY CD TOUCH J107 (REC) (LO) (L2) (L2) (LO) AF ASSY (AWU7300) (TX) (CD) (MO) (PB) (L2) (CD) (TX) (L1) J101 (CD) (PB) (REC) (L1) (L1) (PB) J102 (REC) J104 SIGNAL ROUTE (CD) (TX) : CD AUDIO SIGNAL...
  • Page 23 XC-IS21MD J103 (LO1) (LO1) (L2) (LO) CN31 (MO) CN131 (MO) (MO) (MO) (LO1) (LO1) (L1) (L1) (L1) CN132 CN32 S5688G S5688G (L1) (L1)
  • Page 24 XC-IS21MD 3.6 CD ASSY CD ASSY (AWU7300) (SM) (SM) (CM) (CM) (TS) (TS) (FS) (FS) (FS) Note: The encircled numbers denote measuring point in the schematic diagram. IC1101- Pin 16: IC1101- Pin 13 : PLAY MODE (RF) TEST MODE, Tracking Open (TRER)
  • Page 25 XC-IS21MD J101 (SM) (CM) (CM) (TS) (TS) (FS) (FS) (FS) CN10 CN110 (TS) CD MOTOR ASSY J111 CN11 (AWU7318)
  • Page 26 XC-IS21MD 3.7 REAR and FRONT ASSYS R- TERMINAL ASSY (AWU7316) CN131 CN7101 CN31 (MO) (L1) (L1) (LO1) CN32 (L1) (LO1) (LO1) CN132 (MO) SIGNAL ROUTE (MO) : MAIN OUT SIGNAL (L1) : LINE 1 SIGNAL CN7102 (LO1) : LINE OUT1 SIGNAL...
  • Page 27 XC-IS21MD F- TERMINAL ASSY (AWU7312) SIGNAL ROUTE (L2) : LINE 2 SIGNAL (LO2) : LINE OUT2 SIGNAL VTL1105 (L2) (L2) (LO2) J103...
  • Page 28 XC-IS21MD 3.8 CORE MAIN and CORE SW ASSYS CORE MAIN ASSY (RWZ4334) CN101 PICKUP ASSY 10 11 (CARRIAGE) CORE SW ASSY (RWZ4335)
  • Page 29 XC-IS21MD SIGNAL ROUTE : MD PLAYBACK SIGNAL (PB) : REC SIGNAL : OUTPUT DIGITAL AUDIO SIGNAL : INPUT DIGITAL AUDIO SIGNAL : RF SIGNAL (PB) CN104 CN4101 (PB)
  • Page 30 XC-IS21MD Voltages MD CORE MAIN ASSY IC101 IC102 IC103 IC104 VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE 1.53V 1.59V 0.78V 1.2V 0.54V 0.73V 3.18V 1.2V 0.6V 0.77V 1.65V 3.0V 0.22V 0.6V 0.75V 1.59V 2.0V 0.03V 0.6V 1.61V...
  • Page 31 XC-IS21MD IC106 IC108 IC109 IC110 IC112 IC113 VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE 2.47V 2.77V 1.66V 4.95V 1.6V 0.49V 2.63V 2.77V 3.2V 1.62V 3.96V 1.61V 4.87V 3.2V 1.62V 4.99V 2.63V 1.58V 3.2V 4.99V 1.59V 1.58V 1.67V...
  • Page 32 XC-IS21MD Waveforms Note: The encircled numbers denote measuring point in the schematic diagram and the PCB connection diagram. CORE MAIN ASSY IC101-pin35 (ADIPO) IC101-pin30 (WBO) IC102-pin1 (EFM MON) MODE: PLAY MODE: PLAY MODE: PLAY DISC: GGF1328 (MMD–212) DISC: GGF1328 (MMD–212) DISC: TGTS1 or MMD–110...
  • Page 33 XC-IS21MD CN103-pin1 (SLD +) CN103-pin4 (SP +) CN105-pin1 (LOAD –) MODE: PLAY MODE: PLAY MODE: STOP DC500mV/div., 2mSec/div. DC500mV/div., 5mSec/div. DC1V/div., 1mSec/div. –– GND –– GND –– GND CN105-pin1 (LOAD –) MODE: EJECT DC1V/div., 1mSec/div. –– GND...
  • Page 34 XC-IS21MD 3.9 MD ASSY (REC) (REC) (PB) (PB) (REC) (PB) MD ASSY (AWU7335) SIGNAL ROUTE (PB) : PB OUT SIGNAL (REC) : RECORDING SIGNAL CN4101 (REC) (PB)
  • Page 35 XC-IS21MD J104 (REC) (REC) J102 (PB) (PB) (PB) J140 CN40...
  • Page 36 XC-IS21MD 3.10 FRONT PANEL, LIGHT-L, CD OPEN SW and CD CLOSE SW ASSYS CN50 CN150 J152 MD FLAP ASSY (AWU7324) CN51 LIGHT-L ASSY (AWU7321) FRONT PANEL ASSY (AWU7309) M Q N...
  • Page 37 XC-IS21MD FRONT PANEL ASSY (SW name) S5901: POWER (STANDBY/ON) S5909: TREBLE S5917: /TUNING- S5902: DISPLAY/RDS S5910: PLAY/PAUSE S5918: BALANCE S5903: TIMER REC/WAKE UP S5911: ST.WIDE S5919: CD S5904: MD EJECT S5912: BASS S5920: STATION MEMORY S5905: MD S5913: STOP S5921: FREQ/STATION...

  • Page 38: Pcb Connection Diagram

    XC-IS21MD 4. PCB CONNECTION DIAGRAM NOTE FOR PCB DIAGRAMS : 1. Part numbers in PCB diagrams match those in the schematic 3. The parts mounted on this PCB include all necessary parts for diagrams. several destinations. 2. A comparison between the main parts of PCB and schematic For further information for respective destinations, be sure to diagrams is shown below.
  • Page 39 XC-IS21MD 4.1 TUNER MODULE and TX CONNECTOR ASSYS TX CONNECT ASSY SIDE A (ANP7302-B) FM/AM TUNER MODULE VR6201 (ANP7160-B) Q6204 Q6203 SIDE B FM/AM TUNER MODULE Q6101 Q6102 – Q6105 IC6202 Q6501 Q6214 Q6601 Q6202 Q6201 IC6201 (ANP7160-B) TX CONNECT ASSY...
  • Page 40 XC-IS21MD 4.2 U-COM and LCD ASSYS LCD ASSY SIDE A (ANP7301-B) CN150 U-COM ASSY (ANP7303-B) J140 J160 CN110...
  • Page 41 XC-IS21MD SIDE B (ANP7303-B) IC5501 IC5502 Q5751 Q5506 Q5501 Q5502 Q5752 Q5701 Q5502...
  • Page 42 XC-IS21MD 4.3 AF, F-TERMINAL and R-TERMINAL ASSYS F-TERMINAL ASSY J101 (ANP7301-B) J102 IC141 IC131 IC4001 AF ASSY CD TOUCH (ANP7301-B) CN105 R-TERMINAL ASSY SIDE A (ANP7301-B)
  • Page 43 XC-IS21MD F-TERMINAL ASSY (ANP7301-B) AF ASSY (ANP7301-B) IC7301 IC3002 Q3005 Q3006 Q3004 Q3009 Q3015 Q3014 Q3011 Q3001 Q3002 Q3003 Q3013 Q3010 R-TERMINAL ASSY SIDE B (ANP7301-B)
  • Page 44 XC-IS21MD 4.4 CD and CD MOTOR ASSYS CD MOTOR ASSY SIDE A (ANP7301-B) CD ASSY CD MECHA (ANP7301-B) Q7005- Q7008 Q1101 CD MECHA CN10...
  • Page 45 XC-IS21MD SIDE B CD ASSY Q7004 Q1403 Q1404 Q1402 Q1401 Q7002 Q7003 IC1201 Q1202 IC1301 Q7001 (ANP7301-B)
  • Page 46 XC-IS21MD 4.5 CORE MAIN and CORE SW ASSYS CORE MAIN ASSY 10 11 (RNP1733-B) IC101 IC106 IC102 IC103 IC104 IC114 Q101 Q102 SIDE A CORE SW ASSY...
  • Page 47 XC-IS21MD CORE MAIN ASSY PICKUP ASSY IC109 Q103 IC113 IC108 IC112 (RNP1733-B) Q104 IC110 IC116 CORE SW ASSY SIDE B SPINDLE MOTOR SLED (RNP1733-B) MOTOR...
  • Page 48 XC-IS21MD 4.6 MD ASSY MD ASSY SIDE A Q4002 Q4003 IC4101 (ANP7303-B) CN104 CN40...
  • Page 49 XC-IS21MD MD ASSY SIDE B IC4201 Q4251 IC4202 Q4203 Q4201 (ANP7303-B) Q4252 Q4251 Q4253 Q4202 IC4251 IC4601 IC4301 IC4151...
  • Page 50 XC-IS21MD 4.7 FRONT, LIGHT-L, CD CLOSE SW and CD OPEN SW ASSYS FRONTPANEL ASSY CD OPEN SW ASSY (ANP7301-B) CD CLOSE SW ASSY (ANP7301-B) CN50 LIGHT-L ASSY (ANP7301-B) MD FLAP SW ASSY (ANP7301-B) (ANP7301-B) SIDE A O P Q...
  • Page 51 XC-IS21MD FRONT PANEL ASSY Q5902 Q5901 Q5903 (ANP7301-B) SIDE B...

  • Page 52: Pcb Parts List

    XC-IS21MD Mark No. Description Part No. Mark No. Description Part No. 5. PCB PARTS LIST • NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. • mark found on some component parts indicates the importance of the safety factor of the part.
  • Page 53 XC-IS21MD Mark No. Description Part No. Mark No. Description Part No. C3029, C3030 CEAT100M50 C6115, C6125, C6126, C6211, C6254 CKSQYB102K50 C131, C141, C3041, C3042 CEAT1R0M50 C6601 CKSQYB102K50 C3031 CEAT220M50 C6102, C6114, C6121, C6123, C6124 CKSQYB103K50 C4006 CEAT221M16 C6210, C6213, C6237, C6267, C6276 CKSQYB103K50 C3001–C3008, C3013, C3014...

  • Page 54: Front Panel Assy

    XC-IS21MD Mark No. Description Part No. Mark No. Description Part No. CAPACITORS CAPACITORS C1201, C1202 CCSQCH150J50 C5902 CEJA101M10 C1401, C1402 CCSQCH151J50 C5903 CKSQYF103Z50 C1107 CCSQCH220J50 C1239, C1246, C1247 CCSQCH221J50 RESISTORS C1604 CCSQCH270J50 R5917 RD1/2PM471J R5909 RD1/2PM820J C1280 CCSQCH331J50 Other Resistors RS1/10S&&&J...
  • Page 55 XC-IS21MD Mark No. Description Part No. Mark No. Description Part No. CD MOTOR ASSY CAPACITORS C5507 (0.047F/5.5V) ACH1246 CAPACITORS C5521–C5524 CCSQCH100D50 C7501 CKSQYF104Z50 C5753, C5754 CCSQCH270J50 OTHERS C5751 CCSQCH271J50 CN11 (3P JUMPER CONNECTOR) 52151-0310 C5755 CCSQCH561J50 C5509, C5752 CEAT100M50 CD OPEN SW ASSY...
  • Page 56 XC-IS21MD Mark No. Description Part No. Mark No. Description Part No. L4105, L4602 LAU220J COILS AND FILTERS L4133 LAU2R2J L4111, L4112, L4114, L4115 VTL1105 L101, L103, L104, L107 (4.7µH) DTL1024 L4117–L4120, L4131, L4132, L4311 VTL1105 L110 QTL1015 L108 (47µH) RTL1003 CAPACITORS L102 (0.47µH)

  • Page 57: Adjustment

    XC-IS21MD 6. ADJUSTMENT 6.1 MD SECTION JIGS AND MEASURING INSTRUMENTS Thermometer Test Disc Oscilloscope For servo system adjustment ..........GGF1328 (MMD-212) Optical Power Meter For recording/playback inspection ....GGF1328 (MMD-212), GGF1277, Jitter Meter TGYS1 (or MMD-110), Commercial discs 6.1.1 NECESSARY ADJUSTMENT POINTS...
  • Page 58 XC-IS21MD 6.1.2 TEST MODE For adjustment, use the stereo power amplifier (M-IS21T). (1) How to Start / Cancel Test Mode (Mechanism Assy Adjustment Mode) TEST MODE : ON TEST MODE W213 W213 Short circuit Release TEST MODE W214 W214 STANDBY...
  • Page 59 XC-IS21MD 6.1.3 MD Mechanism Assy Adjustment and Check 1 Temperature Check (Please perform this check soon after the power has been switched on.) Note: When IC101 (RF-AMP) or IC104 (mechanical controller) has been exchanged or when a correction changing VD+3 has been made, be sure to correctly perform all steps up to step 6.
  • Page 60 XC-IS21MD 3 Grating Adjustment Step No. Operation Keys and Operation Method FL Display Status Remarks Short circuit MECH TEST MODE during the power EJECT Test mode (Fig.6-1) Insert the test disc GGF1328 (MMD-212). LOADING GRT AJST Grating adjustment status Press the PLAY key.
  • Page 61 XC-IS21MD 4 Preliminary Adjustment Step No. Operation Keys and Operation Method FL Display Status Remarks Press the NAME key (until AUT YOBI is displayed). AUT YOBI Preliminary adjustment mode Preliminary adjustment starts when the PLAY key is HAo : pressed.
  • Page 62 XC-IS21MD 6 Defocus adjustment Step No. Operation Keys and Operation Method FL Display Status Remarks Press the REC key. of-04 c0020 The C1 error with application of a focus offset of about 0.4 µm on the – side is displayed.
  • Page 63 XC-IS21MD 7 Jitter/C1 Error Check at the time of Playback Step No. Operation Keys and Operation Method FL Display Status Remarks Press the CHARA key. a006F c0017 The fixed display of the C1 error is ended. Press the STOP key.
  • Page 64 XC-IS21MD 8 Jitter/C1 Error Check at the time of Recording/Playback Step No. Operation Keys and Operation Method FL Display Status Remarks Short circuit MECH TEST MODE during the power EJECT Test mode (Fig.6-1) Insert the test disc (GGF1277). LOADING GRT AJST Perform “...
  • Page 65 XC-IS21MD 6.2 CD SECTION Note : There is no information to be shown in this CD adjustment. For adjustment, use the stereo power amplifier (M-IS21T). 6.2.1 HOW TO START / CANCEL TEST MODE TEST MODE : ON TEST MODE TEST...
  • Page 66 XC-IS21MD FUNCTION OF CD TEST MODE OPEN/CLOSE CD cover Open / Close Carriage IN DISPLAY Carriage OUT Laser diode: LIGHT UP Focus servo: ON Spindle kick, STOP Tracking servo, Slider servo: ON/OFF TEST MODE : PLAY DISPLAY TEST DISC: YEDS-7...
  • Page 67 XC-IS21MD 6.3 TUNER SECTION 6.3.1 FM TUNER SECTION Set the mode selector to FM BAND. Connect the wiring as shown in Fig. 6-2. FM SG (1kHz, ±75kHz dev.) Reception Adjustment Adjustment Step No. Frequency Specifications Frequency Level Title Location Display (MHz) (dBµV)

  • Page 68: General Information

    XC-IS21MD 7. GENERAL INFORMATION 7.1 PARTS 7.1.1 IC • The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams. • List of IC M5M4V4400CTP-7, M56758FP, PD5523A, LR376487, BD7910FV, BR93LC56F, IR3R55M, AK4520A, CXA1821M, CXD2587Q,...
  • Page 69 XC-IS21MD M56758FP (CORE MAIN ASSY : IC106) • 5-channel Actuator Driver • • Pin Assignment (Top View) Block Diagram REG+ CH3IN VBS2 – IN3– VBS1 REGB OUT3 IN3+ IN1+ – OUT3 IN1+ IN3– IN1– OUT1 CH3IN VBS1 VBS2 VBS1 VBS2...

  • Page 70: Block Diagram

    XC-IS21MD PD5523A (CORE MAIN ASSY : IC104) • Mechanism Control microcomputer • Pin Assignment (Top View) • Block Diagram I/O PORT Port P0 Port P1 Port P2 Port P3 Port P4 Port P5 Port P6 Internal Peripheral A/D Converter Functions (10bits ×...
  • Page 71 XC-IS21MD • Pin Function Name Description 1 to 7, 100 P96 to P90, P97 I/O These are 8 bit I/O ports with the same functions as P0. By software selection, it functions as the input terminals for the timers B0 to B2, the output terminals for the D/A converter, the expansion input terminals of the A/D converter, or the A/D trigger input terminals.
  • Page 72 XC-IS21MD Name Description 55 to 61, 63 P37 to P31, P30 I/O These are 8 bit I/O ports with the same functions as P0. A15 to A9, A8 The middle 8 bits (A8 to A15) of the address are put out.
  • Page 73 XC-IS21MD LR376487 (CORE MAIN ASSY : IC102) • Encode/Decode/Atrac • Pin Assignment (Top View) 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 EFMO...
  • Page 74 XC-IS21MD Name Description Name Description RAA4 Address output to external D-RAM; ADR4 Digital input signal DOUT Digital output signal RAA8 Address output to external D-RAM; ADR8 VDD3 – Power supply for internal PLL RAOEX Data output enable signal output to external D- DGND –...
  • Page 75 XC-IS21MD BD7910FV (CORE MAIN ASSY : IC116) • Head Driver • Block Diagram Name Description PDGND Predrive GND EFM signal input Pre Driver MUTE Mute control N.C. N.C. Not used N.C. VOD2 Sink output (lower side power MOS drain) H-bridge GND (lower side power MOS source) •...
  • Page 76 XC-IS21MD IR3R55M (CORE MAIN ASSY : IC101) • RF Signal Processor • Block Diagram Name Description ∗ XDISC Logic signal output terminal (outputs DISC signal inversion signal) ∗ XSGAIN Logic signal output terminal (outputs SGAIN signal ADIPI inversion signal) ADIPO...
  • Page 77 XC-IS21MD AK4520A (MD ASSY : IC4301) • AD/DA Converter • Block Diagram AGND DGND 15 MCLK ∆Σ AINL+ Clock Decimation Modulator Filter Divider AINL- 25 CMODE ∆Σ AINR+ Decimation 11 LRCK Modulator Filter AINR- 12 SCLK VREFH 14 SDTO Serial I/O...
  • Page 78 XC-IS21MD CXA1821M (CD ASSY : IC1101) • RF AMP. IC • Block Diagram 164k 123k VREF 1.25V • Pin Function Pin Name Function Pin Name Function Gain adjust the signal which was input from − O APC amplifier output 11 EO pin 9.
  • Page 79 XC-IS21MD CXD2587Q (CD ASSY : IC1201) • SERVO IC • Block Diagram 16 18 64 15 19 61 62 63 TES1 TEST XRST Clock Error Generator Corrector RMUT Senal-In RFAC Interface Demodurator Interface LMUT ASYI Asymmetry XTAI ASYO Over Sampling...
  • Page 80 XC-IS21MD • Pin Function ¡N- Pin Name Function Pin Name Function SubQ 80-bit, PCM peak and level data output SQSO Tracking error input CD TEXT data output SQCK Clock input for SQSO readout Center servo analog input XRST System reset Reset when "L"...
  • Page 81 XC-IS21MD PDG241B (U-COM ASSY : IC5501) • System Control IC • Pin Function No. Name I/O Description No. Name I/O Description CDLAT O CD LSI Latch 41 Vss CD DATA O CD LSI Data 42 XTAL Oscillator pulses CDSYSMUTE O CD decoder mute control...
  • Page 82 XC-IS21MD No. Name I/O Description No. Name I/O Description 91 - O Open 81 MDCLK O MD mecha control clock output 92 - O Open 82 CDSCOR CD SUBQ level input 83 MDFLAP MD disc detection input 93 MDTEST MD Service mode...

  • Page 83: Diagnosis

    XC-IS21MD 7.2 DIAGNOSIS 7.2.1 DETAILS OF ERROR DISPLAY Error Display Details of Error Measure ÷ DEFECT occurred 10 times continuously during REC-PLAY. ÷ Check if there are scratches, dusts, fingerprints, or black Can't REC ÷ Recordable cluster became 0 since DEFECT occurred during spots on disc.
  • Page 84 XC-IS21MD Error Display Details of Error Measure ÷ TOC read was incorrect or could not be read properly. ÷ The TOC data recorded on the disc do not comply with ? DISC MD Standards, so try using another disc. ÷ The disc may be scratched or damaged, so try using another disc.

  • Page 85: Sequnce After The Power On

    XC-IS21MD 7.2.2 SEQUNCE AFTER THE POWER ON Note 1 : IC No. or P∗∗ without name indicate the pin No. Note ; ∗1 : System bus communication of microcomputer. P18 CLK P19 DATA P20 REQ Standby states ∗2 : Starts the LCD communication...

  • Page 86: Single Operation Method

    XC-IS21MD 7.3 SINGLE OPERATION METHOD Jigs and Measuring instruments Low-frequency DC power- oscillator supplay Single operation method and frequnency oscilator inputlevel. 1. Connect part A of the AF ASSY [W420(+8V),W421 (+15V), W422 (+5.6V), W423(GND) and DC power-supplay. (Refer to Fig. 7-1.)
  • Page 87 XC-IS21MD AF ASSY W420..+8V SIDE A W421..+15V Fig 7.1 W422..+5.6V W423..GND U-COM ASSY SIDE A Frequency: 50 or 60Hz Level: Approx. 2Vrms Fig 7.2 CN105 pin8 (AC)

  • Page 88: Disassembly

    XC-IS21MD 7.2.4 DISASSEMBLY Note : Flexible cables are not removed in the case of the adjustment, but remove Front Panel Assy the Flexible cables to apply in the case of the exchange or repair. • Bottom View Front Side ×2...
  • Page 89 XC-IS21MD CD Mechanism Assy CD Assy ×2 Shield Plate CD Mechanism Assy CD Mechanism Assy CD Assy Caution : When the CD Assy is pulled out, it is careful of the breaking down of the Flexible Cable. Exchange...
  • Page 90 XC-IS21MD CD Door Drive Block Note CD Door OPEN/CLOSE When a connector CN7 of AF Assy is removed for the touch sensor system, sensor does not work and CD Door can't open and close. CD Door can open when the land of CN7 at the foil side is short-circuited with the finger.
  • Page 91 XC-IS21MD MD Mechanism Assy AF Assy Independent power supply point Shield Cover MD ×3 U-COM Assy ×2 ×2 MD Assy ×4 Test Point for TEST MODE (MD) MD Mechanism Assy...
  • Page 92 XC-IS21MD How to Diagnose the MD Mechanism Assy Diagnose the MD Mechanism Assy as shown below. FRONT PANEL Assy CD Assy MD Assy AF Assy MD Mechanism Assy U-COM Assy FM/AM TUNER MODULE MD Mechanism Assy (bottom view)

  • Page 93: Pcb Location

    XC-IS21MD 7.2.5 PCB LOCATION CD ASSY LCD ASSY CD CLOSE SW ASSY LIGHT-L ASSY FRONT PANEL ASSY CD MOTOR AF ASSY ASSY R-TERMINAL ASSY CD OPEN SW ASSY U-COM ASSY F-TERMINAL ASSY MD FLAP ASSY MD ASSY TX CONECT ASSY...

  • Page 94: Panel Facilities And Specifications

    XC-IS21MD 8. PANEL FACILITIES AND SPECIFICATIONS 8.1 PANEL FACILITIES Front Panel...
  • Page 95 XC-IS21MD 9 DISPLAY/RDS button 0 TIMER REC/WAKE UP/CLOCK ADJ button % REC MENU (DEMO) button (CD MD Tuner) = CD button ~ ASES button ! Stop (7) button & NAME button (CD MD Tuner) # LINE 2 IN jack * OPT (Optical) IN jack (CD MD Tuner) ‚...
  • Page 96 XC-IS21MD Display 4 5 6 8 9 0 - # $ % ^ Display window 1 Lights during MD recording operation. ~ Lights during sleep timer operation. 2 Lights when MD recorder is in digital signal input mode. ! Lights when setting timer recording.
  • Page 97 XC-IS21MD Remote Control Unit 1 STANDBY/ON button 2 SLEEP button 3 CD button 4 CD cover open/close (0) button 5 TUNER button 6 Digit (1 – 9, 10/0, >10) buttons 7 ST. (stereo) WIDE button 8 PROGRAM button 9 SOUND MODE button 0 CD/MD/TUNER operation buttons &...

  • Page 98: Specifications

    XC-IS21MD 8.2 SPECIFICATIONS 7 FM Tuner Section 7 Micellaneous Frequency Range ..........87.5 - 108MHz Dimensions ....... 205 (W) x 300 (H) x 237 (D) mm Antenna ............75 Ω, unbalanced Weight ................3.1 kg 7 Accessories 7 AM Tuner Section Operating Instructions ..............

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