Sanyo CLT-538 Service Manual

[Page 1] Sanyo CLT-538

FILE NO. Service manual SPECIFICATIONS Transmitting frequency L Base station: .. 30.075-30.300 MHz Handset: ........ 39.775-40.000 MHz Receiving frequency Base station: .. 39.775-40.000 MHz Handset: ........30.075-30.300 MHz Noise Reduction ............

[Page 2] Sanyo CLT-538

I ADJUSTMENT CAUTION :DURING Alignment, OPEN ''AN7PA~ERN MARKED WlTH''SHOR7SlLK JUST LIKE MENTIONED AT PAGE “PARTS LOCATION”, IF RUBBER ANTIS CONNECTED. 1.ALIGNMENT FOR REMOTE UNIT 1-1. Tx/Rx VCO & Tx Freq. Test Equipment ...

[Page 3] Sanyo CLT-538

ADJUSTMENT l-2.TRANsMll-rlNG Test Equipment “ RF Electronic Voltmeter “ Linear Detector . DC Power Supply (DC 3.8 V) Unit Condition a) Push “FLASH” Key. The CH will turn to 7th. Then Rx MUTE is ON. bj Tx POWER - c) Tx MODULATION d) Tx DATA Ad...

[Page 4] Sanyo CLT-538

ADJUSTMENT 1-3. RECEIVING Test Equipment . FM SSG (50 Q : OPEN TYPE) “ Distortion Meter . AC Voltmeter (AFVM) “ Digital Voltmeter . DC Power Supply (DC 3.0-3.8 V) . Oscilloscope Unit Condition a) Push “#” key to select Rx 6th. The Tx frequenc...

[Page 5] Sanyo CLT-538

ADJUSTMENT STEP CONDITION CH ADJUST ADJUSTEDVALUE SPECIFICATION 1.IF SSG Output : 46dB gV 6 T351 Minimum Distortion 2, RF SSG Output : +5dB PV 6 NONE NONE Less than 107. 3.AF LEVEL (1KHz) 6 VR351 50mV 44mV+5mV (Vol. normal) (300Hz) 6 NONE NONE 50-95m...

[Page 6] Sanyo CLT-538

ADJUSTMENT 1. ALIGNMENT FOR BASE UNIT NOTE: During alignment, disconnect the antenna wire from the set. 1-1. Tx/Rx VCO & Tx Frequency (see FIG-1, TABLE-1) Test Equipment . Digital Voltmeter . DC Power Supply (DC 9.0 V ----- CENTER MINUS) . Freque...

[Page 7] Sanyo CLT-538

ADJUSTMENT Unit Condition * TEL line current 50mA at 48V a) Push” *” key, the ch will turn to 7th. b) Slide S401 to “RINGER ON”, Rx MUTE will be ON. Disconnect frequency counter from CN1 01, and connect RF voltmetertoCN101 (50 Q probe). c) TX...

[Page 8] Sanyo CLT-538

“ Distortion Meter . Dummy Load (600 ‘d ) ADJUSTMENT 1-3. RECEIVING (see FIG-4, TABLE-4) Test Equipment s FM SSG (50 Q : OPEN TYPE) - AC Voltmeter (ACVM) . AC Adaptor (DC 9.0 V ---- CENTER MINUS) Unit Condition a) Disconnect AC Adaptor. Discharge...

[Page 9] Sanyo CLT-538

ADJUSTMENT ‘- 10CH Frequency List of Cordless Telephone BASE UNIT “L L = 1 2 3 4 5 6 7 8 9 10 E 1 2 3 4 5 6 7 8 9 10 Tx Freq.(MHz) 30.075 30.100 30.125 30.150 30.175 30.200 30.225 30.250 30.275 30.300 Rx Freq.(MHz) 39.775 39.800 39.825 39.850 39....

[Page 10] Sanyo CLT-538

ADJUSTMENT TEST POINT LOCATION DUMMY SWITCH FOR NZ ONLY, NOTE: FOR NZ MODEL DUE TO PWB DOES NOT HAVE TONE/PULSE SWITCH, DUMMY SWITCH MUST BE USED FOR ACCESS TEST MODE. MlC(E) MlC(+) ANT(H) ANT(E) Rx VCO Tx VCO PARTS LOCATION I r(Mod. Tx) ( Tx POWER) ...

[Page 11] Sanyo CLT-538

TEST MODE i HAND SET 1.Overview By operating the Keyboard SW on the remote unit, the pass or fail of the completion process can be determined through the status of the LEDs, the sound of the key monitor, etc. 2. Startup ( 1 ) Startup of the TEST MODE...

[Page 12] Sanyo CLT-538

TEST MODE i BASE STATION 1. Overview By operating the Slide SW and Keyboard SW on the BASE UNIT, the pass or fail of the completion process can be determined through the status of the LEDs, the sound of the key monitor, etc. 2. Startup. ( 1 ) Startup...

[Page 13] Sanyo CLT-538

EXPLODED VIEW (HAN ‘L Y201 / -12- ...

[Page 14] Sanyo CLT-538

I EXPLODED VIEW (BASE STATION) /’ \ lo3—@ 7 8—Y101 Y101—8 ~—,”3 , I Ld ~A-’nQ ‘“; ~—Ylol - / 66!2!2I “ !,.’ \ 107— “ n Ylo3–di r“ Y1034 Aw —153 Y104 112 -113 07 Ylo7—& -13- ...

[Page 15] Sanyo CLT-538

PARTS LIST PRODUCT SAFETY NOTICE EACH PRECAUTION IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED WITH THE IEC SYMBOL A IN THE PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATED COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNI...

[Page 16] Sanyo CLT-538

PARTS LIST REF.NO. PART NO. C224 C301 C302 C303 C304 C305 C308 C402 C403 C405 C406 C407 C409 C41O C419 C420 C421 C422 C600 C601 C602 C603 C604 C605 C606 C607 C608 C609 C61O C611 C612 C613 C616 C619 C620 C622 C626 C641 C642 C653 C654 C657 C701 C703 C7...

[Page 17] Sanyo CLT-538

PARTS LIST ‘L REF. NO. D921 D922 D923 D924 D925 IC301 IC302 IC401 IC402 IC701 or IC703 or or IC704 IC706 IC901 or L101 LI02 L903 L904 L905 L906 L907 L908 Q101 Q201 Q202 Q204 or or or Q401 or or Q402 or or or Q403 Q704 or or Q708 or or Q709 or or Q7...

[Page 18] Sanyo CLT-538

LIST PARTS REF.NO. R431 R432 R442 R445 R450 R451 R452 R453 R454 R455 R600 R601 R602 R603 R604 R605 R606 R607 R608 R609 R61O R611 R616 R617 R619 R620 R624 R625 R707 R71O R711 R718 R719 R720 R721 R722 R724 R725 R727 R730 R731 R732 R733 R735 R736 R737 R...

[Page 19] Sanyo CLT-538

PARTS REF. NO. T702 VR301 or VR601 or VR701 Xlol X401 XF1OI XF301 or or or XF302 LIST PART NO. A 6450126093 6142507285 6450229510 6142507292 6450336560 6142324943 6450280795 6142562109 6142653586 6140305074 6140305081 6140305098 6140305104 6142613771...

[Page 20] Sanyo CLT-538

REF. NO. or or or QO02 or or or QO03 or or :004 or or Q251 Q252 Q253 Q696 or or or Q699 or or RO1O RO11 R012 R013 R014 R015 R017 R019 R020 R024 R025 R026 R027 R028 R029 R031 R033 R036 R037 R038 R042 R045 R046 R047 R050 R052 R095 R099 R151 R154 R155 R...

[Page 21] Sanyo CLT-538

TROUBLE SHOOTING — L a. The base station does not operate. 1. 2. 3. 4. 5. 6. 7. b. 1. 2. 3. c. 1. 2. 3. Is the AC adaptor connected to an AC line ? Is the jack (DC 9V) connected to the base station ? Is the voltage of C of Q901 9V or higher ? Is th...

[Page 22] Sanyo CLT-538

TROUBLE SHOOTING d. 1. 2. 3. 4. e. 1. 2. 3. 4. 5. 6. The security code cannot be registered. (Handset) (Voice communications are not possible by pushing the TALK button. The unit does not link.) Is the level of pin (32) ICOO1 “High? Check charger t...

[Page 23] Sanyo CLT-538

I TROUBLE SHOOTING f. 1, 2, 3. 4. 9. No voice signal is emitted during voice communications of handset ear speaker. (TALK MODE) Base station 1 YES Is there signal in the T702 telephone line ? NO Is the switch (RY901 ) NO Check L908, L907, YES b “ON...

[Page 24] Sanyo CLT-538

TROUBLE SHOOTING h. 1. 2. 3. 4. 5. 6. 7. 1. 2. 3. i. 1. 2. i-1. 1. 2. 3. 4. The ringer does not ring. I Base station I * Are the Handset and Base station linked? Check refer to the section (c) and (d). YES Does the ringer signal reach pin (1) and (2)...

[Page 25] Sanyo CLT-538

TROUBLE SHOOTING L_ i-2. Transmission signal 1. Is the transmission signal being input to both ends of the NO microphone ? ~ Check MIC. and D795. L i. 1. 2. 3. L_ 1 2. Does the transmission signal reach pin (23) IC706 ? Check IC706. ~ YES I 1 Is the ...

[Page 26] Sanyo CLT-538

SCHEMATIC DIAGRAM(BASE STATION) D412 D419 D4N2Q% Dm2u% ............. --------------- ~+1 +; * + ............. .............. Jl)) CWWF RI ffiER — FOR RU 0412 MM-2x . . . . . . . . . . . . . ,--- -25- ...

[Page 27] Sanyo CLT-538

IC BLOCK DIAGRAM IC401 LC662312B (MICRO PROCESSOR) PIN NAME FUNCTION (QIP48E) NO. PORT NAME DESCRIPTION OF FUNCTION ACTIVE 1/0 1 P31/POUTO BEEP OUT BEEP/RINGER SIGNAL OUTPUT 0(1/0) 2 P32/POUTl TX DATA TRANSMIT DATA OUTPUT (3-ST) 0(1/0) 3 Vss POWER SU...

[Page 28] Sanyo CLT-538

IC BLOCK DIAGRAM T NO. PORT NAME DESCRIPTION OF FUNCTION ACTIVE 1/0 36 P02 CD AUTO SCAN SIGNAL LEVEL DETECT L 1(1/0) 37 P03 KEY OUT KEY MATRIX STROBE OUT 0(1/0) 38 Plo KEY OUT KEY MATRIX STROBE OUT 0(1/0) 39 Pll KEY OUT KEY NATRIX STROBE OUT 0(1/0) 4...

[Page 29] Sanyo CLT-538

“L L L VOLTAGE OF IC & TRANSISTOR * REMOTE ICOO1 uPD750008GB-F07 5 6 7 8 ~ ~ & & _ _ _ 13 14*1 14*2 611.98 I 3.48 I 3.48 3.48 3.48 0.00 0.00 0.00 0.00 0.00 0.00 2.78 1.32 ] 19*1 19*2 2(3 ’21 22 23 24 25 26 27 28 . . . . . . . . . . . ...

[Page 30] Sanyo CLT-538

VOLTAGE OF IC & TRANSISTOR IC301 MC13109FB Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. . . . . ...

[Page 31] Sanyo CLT-538

I I —–7 ,. r %- 1 . ‘cd %%%. 0s.+ m ,Sd 8+W z Zsd ‘t ‘w lL.i .t? , Or&l r, ~g .3% .g 33 ,,, m Hq,/x z 2% ,0 % m, “? ‘,S,?OJ EWE L I I --l I I I I ___ . I I 1I F h, . . I Ill I I I I I I I I , L 11= ‘m .5 u L.. II --d I @----- 1 ...

[Page 32] Sanyo CLT-538

SCHEMATIC DIAGRAM(BASE STATION) @: Pleasereferto P25for (NZ)and(RU) Thecontentsof P33 @ for (AU) ,We,, >Mm. -s->o, z .m.o.. ..__ ._. _ _.— —.— —.— —.— — I C.y “f I I I T-l * I +.+. :::, IITT w, w+. I : Iw-m3%9 I’n‘“ ‘�...

[Page 33] Sanyo CLT-538

I I 1 I ~ n n D n g ...

[Page 34] Sanyo CLT-538

WIRING DIAGRAM (BASE STATION) -36- -37- -. ...

[Page 35] Sanyo CLT-538

WIRING DIAGRAM (HANDSET) REMOTE MAIN P.W.B -38- t —. SANYO Electric Co., Ltd. NOV.1’981650S1 Printed ,n Japan Osaka, Japan ...