ǵ Service Document Exchange Set Sonoclock 30 SC 3300 Service Manual S Es gelten die Vorschriften und Sicherheitshinweise gemäß dem Service Manual "Sicherheit", Materialnummer 720108000000, sowie zusätzlich die eventuell abweichenden, landesspezifischen Vorschriften! S The regulations and safety instructions shall be valid as provided by the "Safety" Service Manual, part number 720108000000, as well as the respective national deviations. Sicherheit Safety Materialnr./Part No. 720108000000 Dieses Service Dokument ist nur in Datenform verfügbar This Service Document is only available as data Änderungen vorbehalten/Subject to alteration Made by GRUNDIG in Germany • H-S43 0103 http://www.grundig.com ǵ Sonoclock 30 SC 3300 ǵ Sonoclock 30 SC 3300 ǵ Sonoclock 30 SC 3300 ǵ Sonoclock 30 SC 3300 Signal Source 1. AM signal generator (AM SG) 2. FM signal generator (FM SG) 3. Sweep generator (10.7 Mhz for FM) Output Indicator 1. SSVM 2. Oscilloscope 3. Frequency Counter General preparation 1. Check source voltage. 2. Set function switch to band being aligned 3. Turn volume control to minimum (unless noted otherwise) 4. Connect low side of signal and output indicator to chassis ground unless otherwise specified. Keep ground connection close to high side connection. 5. Keep signal inout as low as possible to avoid AGC and AFC action (set output indicator to high sensitivity.) 6. Standard modulation is 1000 Hz AT 30% amplitude for AM (1000 Hz at 22.5 kHz deviation for FM) AM IF ALIGNMENT Step 1 2 Signal source (AM RF Gen) Connect Set signal to to A standard radiation loop Aligment indicator connect to Oscilloscope or SSVM Set radio dial to Adjust Adjust for Remarks 455 KHz TP3 Detector Output Terminal Quiet point T2 Maximum Volume control min position Set signal to Alignment indicator Connect to Set radio dial to Adjust Adjust for Remarks Maximum Volume control maxposition Adjust Adjust for Remarks T2 Maximum Symmetrical response T4 (det. Coil) Symmetrical response centered 10.7Mhz Repeat for maximum output AM RF ALIGNMENT Signal source (AM Signal Gen.) connect to 515 KHz (modulated) 1 1745 KHz (modulated) 2 A standard radiation loop antenna 515 KHz (lowest end) T1 1745 KHz (Highest end) C3 (Osc, coil) (Osc, trim) Across speaker voice coil 3 600 KHz (modulated) 600 KHz L4 (ant coil) 4 1440 KHz (modulated) 1400 KHz C4 (ant trim) 5 Repeat Steps 3 and 4 as necessary to minimize tracking error. Also repeat steps 1 and 2 if necessary. FM ALIGNMENT PROCEDURE Signal source (FM RF Gen.) Step Connect to 1 TP2 and GND 2 3 Set signal to Alignment Indicator connect to Oscilloscope or SSVM Set Radio dial to Sweep centered 10.7 MHz TP4 Detector Output Terminal Quiet point Repeat Step 1 and 2 as necessary to obtain S curve linearity , with maximum output FM RF ALIGNMENT Signal source (FM Signal Gen.) Step Connect to 1 2 3 4 5 Volume control minposition Alignment indicator (oscilloscope , Set signal to Set radio dial to Adjust VTVM Connect to 87 MHz *87MHz (lowest L1 (Osc, coil) modulated end) 109MHz C2 (Osc, 109 MHz modulated (Highest end) trimmer) TP 1, GND (Test point) through L2 (RF coil) Across speaker voice coil 90 MHz matching network if necessary 90MHz stretch or modulated squeeze 106 MHz 106MHz C1 (RF trim) modulated repeat steps 3 and 4 as necessary to minimum tracking error. Also repeat steps 1 and 2 if necessary. Adjust for Remarks Maximum Volume control Maxposition * UK models must not be able to tune below 87.5 MHz. BATTERY SENTINEL LEN ADJUSTMENT SETTING OF the 27 pin of IC2 (FOR SWITCH -ON POINT) 1. Plug unit into an AC outlet. 2. Set clock as described in owner's manual 3. Connect a DC power supply to the battery snap (inside battery compartment - no battery connected.) Connect to DC voltmeter across battery snap. 4. Set DC power suply to 8.2 volts. Adjust 27 pin of IC2 to the point where the Battery Sentinel just turns on. Disconnect DC power supply and voltmeter. 5. Connect to a new battery . (Battery Sentinel Indicator will automatically be reset.) ǵ Sonoclock 30 SC 3300 ǵ Sonoclock 30 SC 3300 15¤ 26¤ 25¤ 4¤ 9¤ 7¤ 6¤ 38¤ 8¤ 5¤ 3¤ 14¤ 35¤ 2¤ 1¤ 17¤ 27¤ 31¤ ǵ 24¤ 29¤ 30¤ 22¤ 13¤ 34¤ 32¤ 33¤ 16¤ 28¤ 18¤ 21¤ 20¤ 12¤ Sonoclock 30 SC 3300
