Page 1
ICF-CD823L SERVICE MANUAL AEP Model UK Model Ver 1.1 2001. 04 Model Name Using Similar Mechanism CFD-930L Optical Device Name KSM-213CDM Optical Pick-UP Name KSS-213C SPECIFICATIONS CD player section General System: Compact disc digital audio system Time display: Laser diode properties: Material: GaAlAs...
Note on chip component replacement OPERATION. REPLACE THESE COMPONENTS WITH • Never reuse a disconnected chip component. SONY PARTS WHOSE PART NUMBERS APPEAR AS • Notice that the minus side of a tantalum capacitor may be dam- SHOWN IN THIS MANUAL OR IN SUPPLEMENTS aged by heat.
Page 3
LASER DIODE AND FOCUS SEARCH OPERATION CHECK NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 1. Open the CD lid. The laser diode in the optical pick-up block may suffer electrostatic 2. Turn on S501 as following figure. break-down because of the potential difference generated by the 3.
SECTION 1 GENERAL This section is extracted from instruction manual. Setting the Clock and Date 1 Set the alarm setting dial to ALARM MODE OFF. 2 Plug in the clock radio. The display will flash “AM 12:00” or “0:00”. 3 Press CLOCK for a few seconds. You will hear a beep and the year will start to flash in the display.
SECTION 2 DISASSEMBLY • The equipment can be removed using the following procedure. Main board Cabinet, lower Panel (front) sub assy Transformer board Optical pick-up block (KSM-213CDM) Note: Follow the disassembly procedure in the numerical order given. 2-1. CABINET, LOWER 2 Two screws (+P 3 ×...
SECTION 3 TEST MODE 3-1 LCD Test Mode • The LCD test mode is initiated by turning off the main power once then back on or by resetting the machine while TP415 (LCD TEST, pin- 60 terminal) is connected to GND. (LCD segment) •...
Page 9
CD TEST-1 FOCUS Auto adjustment Rough servo BAND +button CD button button button TEST MODE END The second music Servo ON Sled maement CD STOP button played back. BAND +button CD button button button jump has been set? Execntes the Sets the respective TRACKING setting of jump.
SECTION 4 ELECTRICAL ADJUSTMENTS PRECAUTION LW FREQUENCY COVERAGE ADJUSTMENT • Adjustment should be performed in the order given. Adjust for a maximum reading on level meter TUNER SECTION 0 dB=1 µV 153 kHz LW TRACKING ADJUSTMENT [FM] Adjust for a maximum reading on level meter Setting: Function switch : RADIO L3-2...
ICF-CD823L SECTION 5 DIAGRAM 5-1. BLOCK DIAGRAM Note on Printed Wiring Board: • Waveforms • X : parts extracted from the component side. • b : Pattern from the side which enables seeing. IC401 ud (XT1) • : Through hole.
Page 12
ICF-CD823L 5-3. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) – • Refer to page 13 for Waveforms. • Refer to page 25 for IC Pin Function Description. • Refer to page 26 for IC Block Diagrams. — 14 — — 15 —...
Page 13
ICF-CD823L 5-4. SCHEMATIC DIAGRAM – MIAN SECTION (2/2) – • Refer to page 13 for Waveforms. • Refer to page 26 for IC Block Diagrams. — 17 — — 18 — — 19 —...
5-7. IC PIN FUNCTION DESCRIPTION 5-8. IC BLOCK DIAGRAMS • MAIN BOARD IC401 µPD789407AGK-A21-9EU (SYSTEM CONTROL/LCD DRIVER) CXA1238M-T6 Pin No. Pin Name Description − VDD1 System power supply BIAS LCD bias output − 28 27 26 25 24 23 22 21 3–5 VLC0–2 LCD drive power supply...
Page 17
IC501 CXA1992BR 32 31 28 27 RF SUMMING AMP PD2 IV PD1 IV SENS2 FE BIAS SENS1 C OUT F IV AMP LASER POWER CONTROL FE AMP E IV AMP XRST DATA TGFL DFCT MIRR TRK GAIN WINDOW COMP FO BIAS E-F BALANCE WINDOW WINDOW COMP...
SECTION 6 EXPLODED VIEWS NOTE: • The mechanical parts with no reference number • -XX, -X mean standardized parts, so they may in the exploded views are not supplied. The components identified by mark 0 or have some differences from the original one. •...
BACK LIGHT HEADPHONE SECTION 7 ELECTRICAL PARTS LIST KEY (FRONT) KEY (UPPER) NOTE: • Due to standardization, replacements in the • CAPACITORS: • SEMICONDUCTORS parts list may be different from the parts uF: µF In each case, u: µ, for example: specified in the diagrams or the components •...
Page 30
ICF-CD823L REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2001.04...