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FT-7007LR FT-7007LBR
PUBLISHED IN JAPAN, Nov., 1998
BLOCK DIAGRAMS Base Unit
7
Handset
8
Base Unit
RF TEST POINT
9
RX VCO TEST POINT
TX VCO TEST POINT
DISCRI TEST POINT
SCHEMATIC DIAGRAMS
10
Handset
RF TEST POINT
11
RX VCO TEST POINT
TX VCO TEST POINT
DISCRI TEST POINT
12
TROUBLESHOOTING HINTS 1. The bell does not ring. When the PAGE SW of the base is pressed, does the ringer on the handset ring?
See 2. The bell does not ring & page does not ring.
NG
OK
When the TEL SG is joined with the base to make bell signal, is there pulse wave on Pin 4 of IC2?
NG
OK
OK
Then, is there pulse wave on Pin 24 of IC3?
By using voltage chart, check NG IC2.
Check TEL network primary circuit.
NG
Check IC3, C85, R45 and R44.
OK
By using voltage chart, check IC3.
NG IC3 is defective.
OK
Check the surrounding circuit where the voltage is incorrect.
13
IC2 is defective.
2. The bell does not ring & page does not ring. Can the base and handset be connected?
NG
See 3. The base and handset cannot be connected.
NG
When the key of the handset is NG pressed, can the pulse output at pin 38 of IC502 be seen?
OK
Press handset DIAL key while in TALK MODE, can key touch sound be heard from the ringer?
Check IC502.
OK
OK
At the Q505 collector, can the NG pulse wave be seen? OK
Check RINGER SP501.
When the PAGE SW S2 of the base is pressed, does pin22 of IC3 change from high to low?
NG Check S2, R58 and R73.
OK
Check IC3 and its peripheral circuit.
14
Check R565, R586 and Q505.
3. The base and handset cannot be connected. Check whether the base is able to set in the test mode 1.
NG
Check the power peripheral circuit, IC3 and its peripheral circuit.
NG
Check Q2, D3 and their peripheral circuits. Try adjust TX VCO VOLTAGE again.
NG
Check Q2, Q3, FT3 and their peripheral circuits.
OK Check the TX FREQUENCY on the base unit. OK
Check the TX POWER on the base unit. OK Set the base in the test mode 3. Check whether deviation of the TX data is app. 8kHz Dev.
OK NG
Check whether there is a 200Hz data waveform at pin 46 of IC3.
NG
Check IC3.
OK
OK Check R72, R73, R68, R53, R50, R49 and C61.
Set the base in the test mode 6, 49.83MHz (200Hz 8kHz Dev.) 1mV output signal from ANT IN is applied. Can the CHG LED be lighted? OK
NG
Check whether there is a 200Hz data waveform at pin 27 of IC1.
NG
OK Check Whether there is a 200Hz data waveform at pin 23 of IC1.
NG
Check MO1, FT1, FT2, L2, L4 and their peripheral circuits. Try adjust RX VCO VOLTAGE and DISCRI VOLTAGE again.
Check R7, C29 and C26.
OK Check whether there is a 200Hz data waveform at pin 33 of IC3. OK Check IC3 and its peripheral circuit.
A
15
NG
Check R59.
A
Check whether the handset is able to set in the test mode 2.
NG
Check the power peripheral circuit, IC502 and its peripheral circuit.
NG
Check Q503, D501 and their peripheral circuits. Try adjust TX VCO VOLTAGE again.
NG
Check Q503, Q502, FT504 and their peripheral circuits.
NG
Check whether there is a 200Hz data waveform at pin 46 of IC502.
OK Check the TX FREQUENCY on the handset unit. OK
Check the TX POWER on the handset unit. OK Set the handset in the test mode 3. Check whether deviation of the TX data is app. 5kHz Dev.
NG
Check IC502.
OK
OK Check R547, R549, R540, R542, R539 and C560.
Set the handset in the test mode 10, 46.77MHz (200Hz 5kHz Dev.) 1mV output signal from ANT IN is applied. Check whether the bell ring.
NG
Check whether there is a 200Hz data waveform at Pin 27 of IC501.
NG
OK
Check MO501, FT501, FT502, L503 and their peripheral circuits. Try adjust RX VCO VOLTAGE and DISCRI VOLTAGE again.
OK Place the handset on the base to charge about 5 seconds, then connect again.
Check whether there is a 200Hz data waveform at Pin 23 of IC501.
NG Check the charge circuit of base and handset.
NG
Check R507, C518 and C517.
OK Check whether there is a 200Hz data waveform at Pin 21 of IC502. OK Check IC502 and its peripheral circuit.
16
NG
Check R559.
4. Cannot make a phone call (pulse). NG
See 3. The base and handset cannot connect.
While in TALK MODE, press NG dial key of the handset. Can pulse feedback be heard from the handset speaker?
Check the base RELAY control (around Pin 23 of IC3).
Can the base and handset be connected? OK
OK Check the base TEL-line network primary circuit.
5. Cannot make a phone call (tone). Can the base and handset be connected?
NG
See 3. The base and handset be cannot be connected.
OK While in TALK MODE, press dial key of the handset. Can tone waveform from Pin 1 of IC3 is fed?
NG
Check IC3.
OK Can tone signal be heard from the handset speaker?
NG
Check Pin 18~20 of IC1, Q1 and their peripheral circuits.
OK Check the base TEL-line circuit and RELAY control circuit.
17
6. Voice cannot be transmitted to other party (outgoing call). Can the base and handset be connected?
NG
See 3. The base and handset be cannot be connected.
NG
Check R573, R554, R575, R550 and C564.
NG
Check IC501 and Pin13~14 peripheral circuits of IC501.
NG
Check IC501 and Pin 9~11 peripheral circuits of IC501.
OK Does the bias voltage exitst at MC501? OK The 1kHz 18mV sine waveform is applied to MC501 +side, can the 1kHz sine waveform Pin13 of IC501 be fed? OK Check whether there is the sine waveform at Pin9 of IC501. OK TX output signal from the handset is detected by the liner detector, can the 1kHz 3kHz Dev. sine waveform be fed.
NG
Check C509, R569 and R527.
OK Check Whether there is the 1kHz sine waveform at Pin16 of IC1.
NG
Check IC1 and Pin15~16 peripheral circuits of IC1.
NG
Check IC1 and Pin17~20 peripheral circuits of IC1.
NG
Check Q1 and its peripheral circuit.
NG
Check T1, RL1 and their peripheral circuits.
OK Check whether there is the 1kHz sine waveform at Pin20 of IC1. OK Check whether there is the 1kHz sine waveform at the Q1 collector. OK Check whether the 1kHz sine wavefor m from TEL-line output is fed. OK
Check MC601 of handset.
18
7. The voice of the caller cannot be heard (incoming call). Can the base and handset be connected?
NG
See 3. The base and handset be cannot be connected.
NG
Check the base TEL-line circuit and RELAY control circuit.
NG
Check IC1 and Pin13~14 peripheral circuits of IC1.
NG
Check IC1 and Pin9~11 peripheral circuits of IC1.
OK The 1kHz 97.5mV sine waveform is applied to TEL-line of the base, can the 1kHz sine waveform from the Q1 collector be fed? OK Check whether there is the 1kHz sine waveform at Pin13 of IC1. OK Check whether there is the 1kHz sine waveform at Pin9 of IC1. OK TX output signal from the base is detected by the liner detector, can the 1kHz 3kHz Dev. sine waveform be fed?
NG
Check C65 and R51.
OK Check whether there is the 1kHz sine waveform at Pin16 of IC501.
NG
Check IC501 and Pin15~16 peripheral circuits of IC501.
NG
Check IC501 and Pin17~20 peripheral circuits of IC501.
OK Check whether there is the 1kHz sine waveform at Pin19 and 20 of IC501. OK Check whether there is the 1kHz sine waveform during for Pin1 and 2 of J501.
NG
Check J501 and its soldering.
OK
Check SP801 and WA801.
19
IC AND TRANSISTOR VOLTAGE CHART Base Unit Ref. No PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 IC1 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
Unit[V] STBY Vcc Vcc Vcc-4 Vcc-4 Vcc-GND Vcc-GND Vcc-GND Vcc-GND GND GND 1.2 1.1 1.0 0.7 1.0-GND 1.0-GND GND 1.2 1.2 1.2 GND 0.5 Vcc-GND 1-0.6 0.7 0.7 2-GND 2.8-2.4 4-3.8 GND 4.9 4.9 4.9 3.5 1.2-1.0 1.0 0.1 3.5 0.5 1 2.0 4-3.5 5-4.8 Vcc
TALK 5-4.9 4.9 CLOCK CLOCK Vcc-GND Vcc-GND Vcc-GND Vcc-GND 2-1 1.5 2-1 1.5 2-1 1.5 1.5 2-1 1.5 1.3 1.3 1.3 GND 1.5 Vcc-GND 0.8 0.8 0.8 1.0 Vcc-4.5 4.2-3.8 GND 4.5 4.6-4.4 Vcc 3.6-3.4 GND 1.0 0.7 3.5-3.4 1.5 1 2 3.8 Vcc-4.8 Vcc
Unit[V]
NOTE Sine wave
Ref. No PIN 45 46 IC1 47 48 1 2 IC2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 IC3 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
10.24MHz 10.24MHz Pulse Pulse Pulse Pulse Sine wave Sine wave Sine wave
Sine wave Sine wave Sine wave Sine wave
Pulse Sine wave
Sine wave Sine wave Sine wave
Sine wave Sine wave
Sine wave
Sine wave
20
STBY 0.5 Vcc-4 GND GND OPEN OPEN GND Vcc GND Vcc GND GND 3.8-GND Vcc-GND Vcc GND GND GND GND GND Vcc GND GND GND GND GND GND Vcc Vcc Vcc GND GND GND GND GND GND GND GND GND GND Vcc-GND GND GND GND
TALK NOTE 0.8 3.8 1.4 GND OPEN Sine wave OPEN Sine wave GND GND GND Vcc GND GND 3.8-GND Clock Vcc-GND Clock Vcc GND GND GND NC GND NC GND 4.8 GND NC GND NC GND NC GND NC GND NC GND GND POWER FAIL Vcc CHAGE DET Vcc Vcc PAGE Vcc RL CONT Vcc BELL IN GND NC GND P/T GND NC GND NC GND NC GND NC GND NC GND NC Vcc-GND Pulse GND NC GND NC GND NC
Unit[V] Ref. No PIN 37 38 39 40 41 42 IC3 43 44 45 46 47 48 1 2 IC4 3 E Q1 C B E C Q2 B E Q3 C B E C Q4 B E Q5 C B E C Q6 B E Q7 C B E C Q8 B E Q9 C B
STBY Vcc-GND Vcc-GND Vcc-GND Vcc-GND Vcc-GND Vcc GND GND GND GND GND GND Vcc Vcc GND 1.8 GND 1.0 4.4 Vcc GND GND Vcc GND 0.6-GND GND GND 5.6 10-9 6.3 GND Vcc GND 0.8 GND GND GND 10-9 GND GND Vcc GND
TALK Vcc-GND Vcc-GND Vcc-GND Vcc-GND Vcc GND GND 3.0 GND GND GND GND Vcc Vcc GND 1.0 4-3 1.8 2-1.5 4.5 2.5-2 GND Vcc-3.5 0.8 GND GND 0.6 5.6 9-8 6.3 GND Vcc GND GND GND 0.8 GND 0.1 0.8 GND Vcc GND
NOTE Pulse Pulse Pulse Pulse BAND CHGLED Vss TXPWER TXVCO DATA OUT DATA ENB NC
Sine wave Sine wave Sine wave Sine wave Sine wave
Sine wave
21
Handset !"#$%&'$ ()& *+,+./0 3 4$5 4$5 4 4$5 4$5 8 39$4:;<= 39$4:;<= : 39$4:;<= 39$4:;<= A 9B4$5 9B4$5 5 9B4$5 9B4$5 E 9B4$5 9B4$5 F 9B4$5 9B4$5 G 9 3$4 39 9 3$4 33 3$3 3$4 34 9 3$4 38 3$3 3$4 3: 3$3 3$4 3A 9B9$8 3$4 35 9B9$8 3$4 3E 9 3$4 3F 9 3$4 3G 9 3$4 49 9 3$3 43 9 9 44 9 3$A )>A93 48 9B4$5 9B4$5 4: 9B9$5 9$5 4A 9B9$5 9$5 45 9B9$5 9$5 4E 9B9$5 9$E 4F 4$5H4$AB8$9I 4$5 4G 4$3H3$AB4$3I 3$AB3$F 89 9 9 83 4$4B4$5 4$4 84 4$4B4$5 3$FB4$A 88 4$5 4$5 8: 3$:B3$E 3B3$E 8A 9B9$A 9 85 9B9$F 9$FB3$9 8E 9 9$E 8F 3$3B3$E 9$FB3$8 8G 9 3$4 :9 9B9$F 3$3 :3 9$4B4$9 4$9 :4 9 4$9 :8 9 4$AB4$E :: 9 4$A
Unit[V]
Unit[V]
&1+2
!"#$%&'$ ()& :A :5 )>A93 :E :F 3 4 8 : A 5 E F G 39 33 34 38 3: 3A 35 3E 3F 3G 49 )>A94 43 44 48 4: 4A 45 4E 4F 4G 89 83 84 88 8: 8A 85 8E 8F 8G :9
6778 >?'7@ >?'7@ (C?D" (C?D" (C?D" (C?D"
(C?D" (C?D" (C?D" (C?D" (C?D" *JK"%LMN" O&P (C?D" *JK"%LMN" 6773 *JK"%LMN" (C?D" *JK"%LMN" *JK"%LMN" (C?D" 6774 *JK"%LMN"
22
*+,9 9 9 9 9 4$5 9 9 9B4$9 9B4$5 4$5 9 9 9 9 9 9 9 9B4$5 9B4$5 9B4$5 4$5 9 3$3B4$5 9B4$5 4$5 9 9 9 9 4$4B4$5 9B9$A 9$AB4$5 4$5 4$5 4$5 4$5 4$5 9 9 9 4$9B4$5 9 9
+./0 9$5 3$G 9$G 9 9 4$A 9 9 9B3$F 9B4$5 4$5 9 9 9 9 9 4$5 9 9B4$5 9B4$5 9B4$5 9B4$5 9 9 9B4$5 4$5 9 9 9 9 9 3$3 4$: 4$A 4$A 4$A 4$A 4$A 9 9 9 4$A 9 9
&1+2
O&P &> !2*2+
1*> 1*> 677 &> &> &> &> &> &> (C?D" (C?D" (C?D" (C?D" (C?D" +./0B/2P !QBP.+. ,.+B/1R &> &> &> &> +QB6>1 +QB(R! *+1(B>1&+ (1R2!BS.)/
>1/8 >1/4 >1/3 >1/9 !1R: >
Unit[V] Ref. No. PIN 41 42 43 44 IC502 45 46 47 48 1 2 IC503 3 1 2 IC504 3 E C Q501 B E C Q502 B E C Q503 B E C Q505 B E C Q506 B
STBY 0 0 0 0 0 0 0 0 2.6 2.6 0 2.6 2.6 0 2.6 0 2.0-2.6 0 0 0 0 0-2.6 0-1.5 2.6 0 2.1-2.6 0 2.6 0
TALK 0 2.5 0 0 0 0 0 0 2.6 2.6 0 2.6 2.6 0 2.6 2.6 2.0 0 1.7-2.6 0.5-0.8 0.5-1.1 2.6 1.4-1.8 2.6 0 2.6 0 2.6 0
NOTE ROW0 MIC-B GND RINGVOL DATA-ENB DATA-OUT NC NC OUT Vcc GND OUT Vcc GND
GND Sine wave Sine wave Sine wave Sine wave
RING GND
23