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CDX-CA850/CA850X/CA860X
SERVICE MANUAL
US Model
Canadian Model
Ver 1.1 2001. 04
CDX-CA850X/CA860X
AEP Model
UK Model
CDX-CA850
Photo: CDX-CA850X
• The tuner and CD sections have no adjustments.
Model Name Using Similar Mechanism CDX-C5000R
CD Drive Mechanism Type MG-383Z-121//Q
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
Optical Pick-up Name KSS-720A
23.2 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz w
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CDX-CA850/CA850X/CA860X Dimensions Approx. 178 × 50 × 177 mm (7 1/8 × 2 × 7 in.) (w/h/d) Mounting dimensions Approx. 182 × 53 × 162 mm (7 1/4 × 2 1/8 × 6 1/2 in.) (w/h/d) Mass Approx. 1.3 kg (2 lb. 10 oz.) Supplied accessories Parts for installation and connections (1 set) Front panel case (1) Rotary commander RM-X5S Card remote commander RM-X112 (CDX-CA850X/CA860X) RM-X113 (CDX-CA850) Note This unit cannot be connected to a digital preamplifier or an equalizer. Design and specifications are sub
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CDX-CA850/CA850X/CA860X Ver 1.1 2001. 04 TABLE OF CONTENTS 1. GENERAL ........................................................................... 4 2. DISASSEMBLY 2-1. Sub Panel Assy .................................................................. 10 2-2. CD Mechanism Block ....................................................... 10 2-3. Main Board ....................................................................... 10 2-4. Heat Sink .................................................
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CDX-CA850/CA850X/CA860X SECTION 1 This section is extracted from AEP, GENERAL UK model’s instruction manual. 4
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CDX-CA850/CA850X/CA860X Connection 99
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CDX-CA850/CA850X/CA860X SECTION 2 DISASSEMBLY Note : This equipment can be removed using the following procedure. 2-2. CD MECHANISM BLOCK 7 bracket (CD) Set Sub Panel Assy CD Mechanism Block Main Board Heat Sink 6 PTT 2.6x4 5 CD mechanism block Chassis (T) Assy lever Section Arm Roller Assy Servo Board Chassis (OP) Assy Optical Pick-up Block 2 PTT 2.6x4 3 1 PTT 2.6x4 4 CN401 Note : Follow the disassembly procedure in the numerical order given. 2-1. SUB PANEL ASSY 2-3. MAIN BOARD 4 ground point s
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CDX-CA850/CA850X/CA860X 2-4. HEAT SINK 5 heat sink 3 PTT 2.6x10 2 PTT 2.6x16 1 PTT 2.6x10 4 PTT 2.6x4 2-5. CHASSIS (T) ASSY 2 P 2x3 3 P 2x3 1 Unsolder the 4 chassis (T) assy lead wires. black red white 11
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CDX-CA850/CA850X/CA860X 2-6. LEVER SECTION 5 guide (disc) 6 lever (R) sub assy 3 tension spring (LR) 7 lever (L) sub assy 1 PS 2x4 2 DISC IN board 4 claws 2-7. SERVO BOARD 2 heat sink (CD) 1 PS 2x5 9 PS 2x4 7 PS 2x4 4 CN2 5 Removal the solders. 3 CN3 7 P 2x3 0 SERVO board 6 Removal the solders. 8 loading motor assy (M903) 12
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CDX-CA850/CA850X/CA860X 2-8. ARM ROLLER ASSY • When installing, take note of the positions arm (roller) and washers. (Fig. 1) bearing (roller) retaining ring (roller) bearing (roller) washer(RA) arm washer(RA) arm Fig. 1 2 arm roller assy 3 PS 2x3 4 LOAD board 1 tension spring (RA2) 2-9. CHASSIS (OP) ASSY 7 chassis (OP) assy 8 compression spring (FL) 1 tension spring (KF1) 9 compression spring (FL) 2 tension spring (KR1) 5 Fit lever (D) in the direction of the arrow. 6 Turn loading ring i
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CDX-CA850/CA850X/CA860X 2-10. OPTICAL PICK-UP BLOCK 1 P 2x3 2 sled motor assy (M902) 3 optical pick-up block 14
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CDX-CA850/CA850X/CA860X SECTION 3 DIAGRAMS 3-1. IC PIN DESCRIPTIONS • IC501 CXD2598Q (DIGITAL SERVO, DIGITAL SIGNAL PROCESSOR) (SERVO BOARD) Pin No. Pin Name I/O Pin Description 1 DVDD — Digital power supply pin 2 DVSS — Digital ground 3 SOUT O Servo brock serial data output (Not used.) 4 SOCK O Servo brock serial data read clock output (Not used.) 5 XOLT O Servo brock serial data latch output (Not used.) 6 SQSO O Sub Q 80 bit, PCM peak and level data output. CD TEXT data output 7 SQCK I Clock i
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CDX-CA850/CA850X/CA860X Pin No. Pin Name I/O Pin Description 52 TE I Tracking error signal input 53 CE I Center servo analog input 54 RFDC I RF signal input 55 ADIO O Test pin (Not used.) 56 AVSSO — Analog ground 57 IGEN I Constant current input from OP amplifier. 58 AVDDO — Analog ground 59 ASYO O EFM full-swing output (“L”: VSS, “H”: VDD) 60 ASYI I Asymmetry comparate voltage input 61 RFAC I EFM signal input 62 AVSS3 — Analog ground 63 CLTV I VCO control voltage input from master. 64 FILO O Fi
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CDX-CA850/CA850X/CA860X • IC5 CXP84640-072Q (CD SYSTEM CONTROL) (SERVO BOARD) Pin No. Pin Name I/O Pin Description 1 ITRPT — Not used in this set. 2, 3 — — Not used in this set. 4, 5 NCO — Not used in this set. 6 OPEN I Front panel open detection input 7 CLOSE O Front panel close control output 8 LINKOFF I Bus interface link input 9 NCO — Not used in this set. 10 D SW I Down switch input (SW4) 11 SSTP I Limit switch input (SW3) 12, 13 NCO — Not used in this set. 14, 15 — — Not used in this set.
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CDX-CA850/CA850X/CA860X Pin No. Pin Name I/O Pin Description 57 SENS I SENS signal input 58 — — Not used in this set. 59 — — Not used in this set. 60 BU.IN I Back-up power detection input 61 BUSON I Bus on control input 62 IN SW I Disc in switch input (SW1) 63 SELF SW I Self switch input (SW2) 64 SCOR O Sub-code sync output 65 CD-CKO O CD signal process serial clock input 66 LM LOD O Loading motor control output 67 CD DATA O CD signal process serial data output 68 CD-XLAT O CD signal process ser
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CDX-CA850/CA850X/CA860X • IC501 MB90574BPMT-G-323-BND (MAIN SYSTEM CONTROL) (CDX-CA850X/CA860X) (MAIN BOARD) • IC501 MB90574BPMT-G-324-BND (MAIN SYSTEM CONTROL) (CDX-CA850) (MAIN BOARD) Pin No. Pin Name I/O Pin Description 1 – 4 NCO O Not used. (Open) 5 ATT O System mute control signal output 6, 7 NCO O Not used. (Open) 8 VCC — Power supply pin (+5 V) 9 AMP ATT O Amp mute signal output 10 E2PSIO I/O EEPROM data signal input/output 11 E2PCKO O EEPROM clock signal output 12 DOOR SW/FLS SI I Door s
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CDX-CA850/CA850X/CA860X Pin No. Pin Name I/O Pin Description 69 FLASH W I Flash write mode detection signal input 70 I2CSIO O Tuner, electronic volume communication data signal output 71 I2CCKO O Tuner, electronic volume communication clock signal output 72 NCO O Not used. (Open) 73 X1A I Low speed oscillation signal input (32.768 kHz) 74 X0A I Low speed oscillation signal input (32.768 kHz) 75 DAVN O DAVN signal output to RDS decoder 76 DISCON IN O Not used. (Open) 77 BUIN I Backup power supply
