3. TO REPLACE THE BATTERIES 1) Loosen the screw on the back of the SF-4300A / SF-4600 that holds the battery compartment cover in place, and remove the cover. Screw 2) Loosen the screw that secures one of the three battery holders in place and remove the battery holder.
4. DATA TRANSFER SF-4300A / SF-4600 can transfer customers data to other SF-4300A / SF-4600 with memory protection only when replacing the LCD or the outer case. How to transfer the data. * Before connecting the cable (SB-60/62), be sure to reset the slave machine to clear all data.
Page 8
SF Units or between an SF Unit and a personal computer. In addition to hardware connections, it details how to set up the communications parameters and how to set up the SF-4300A / SF-4600 to receive data. By following these instructions carefully, you can be ensured of successful communications every time.
Page 9
If the units have another condition, reset as above. • To change the parameters 1. Use the ∆ and — cursor keys to change the selected parameter on the display. 2. Use the cursor keys to change the high-lighted setting of the currently selected parameter.
Page 10
Press 4 to select DATA COMM. SEND RECEIVE SET UP CAPS Press 1 to select SEND. ONE ITEM MODE DATA ALL DATA - SEND - CAPS Press 3 to select ALL DATA. SEND ALL DATA? SET/ESC CAPS Press SET to start the send operation or ESC to abort the operation without sending anything.
7. TO FIX TAB ASS'Y When fixing a TAB ass'y part to the main PCB, it is necessary to paint "Neji lock" after soldering the cable to the place of soldering part for the against of a shock. 1) Parts code of "Neji lock" Code No.
8. TROUBLE SHOOTING <No power on> Adjust contrast Is contrast adjustment OK? Replace batteries Is power of batteries enough? Does display appear by pressing Check other function Reset button? Does it sound by key enter? Refer to <No/Erratic display> Adjust contact and clean bat- Do batteries make positive contact tery spring with the battery springs?
Page 17
Is 17-Pin of µPD3056G -007(LSI 1) Replace IC1 0[V]? Is 18-Pin of µPD3056G-007 (LSI 1) Replace TC4S69F (IC2) 0[V]? Is 3-Pin of S-81250HG-RD (IC4) 5[V]? Are capacitor C12, C13 OK? Replace C12, C13 Replace IC4 Refer to <No/Erratic display> <No key input> Does key make positive contact with Clean/Adjust contact L571-1 Ass’y...
Page 18
<No/Erratic display> Is input 2-Pin of S-81250 HG-RD Check Q1, Q2 (IC3) 9[V]? Is output 3-Pin of S-81250 HG-RD Replace IC3 (IC3) 5[V]? Are voltage of several capacitors enough? V1: 1.5 [V] Check solder part of R4~R8 or V2: 3.0 [V] Replace C6, C7, C8, C9, C10 V3: 5.5 [V] V4: 7.0 [V]...
9. HARD CHECK OPERATION DISPLAY NOTE 1. Turn the slide (battery) switch off. 2. Push the P-button. Check if timer is Turn the slide (battery) switch on 00:00:00 working. while short the short pad (T16, T37). TEST 2 MEMORY MENU 3 KEY 4 BUZZER 1 DISP...
Page 20
OPERATION DISPLAY NOTE Reverse checker display FRAME Dots appear at corners. Check if timer is working. 00:00:00 TEST 2 MEMORY MENU 3 KEY 4 BUZZER 1 DISP 5 EXT Key check 1 RANDOM 2 AUTO No display — —...
Page 21
OPERATION DISPLAY NOTE • Check the key no. TEL MEMO SCHEDULE CALENDAR ....÷ appears on the display. HOME WORLD OFF ON • Check the key sounds. ESC ..... DEL • To return to the menu FUNCTION Q W ....NEXT mode, enter SEARCH .
Page 22
OPERATION DISPLAY NOTE WRITE1 (After few seconds) MEMORY 3 WR2 4 READ2 1 WR1 5 DUMP 2 READ1 6 CHKSUM 1. Remove the main batteries. (Backup voltage 2. Measure the voltage be- check) tween T16 (GND) and T17 (VDD). 3. Check the voltage is higher than 2 [V].
Page 23
OPERATION DISPLAY NOTE COMPLETE Check sound. 32KB (In case of SF-4300A) COMPLETE 64KB (In case of SF-4600) — —...