Manual for FT-8808

Manual for FT-8808

Brand: TOSHIBA

Category: Telephone

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 8:50 p.m.

Manual Publish Date: 1998-10-01

Warranty Information

None

HANDSET CONTROLS

  • TALK button: To initiate or end a call.
  • 0-9, *, # Dial buttons: For dialing numbers.
  • TONE button: For tone dialing.
  • PAUSE button: Inserts a pause in dialing.
  • MEM (Memory) button: Accesses memory functions.
  • FUNC (Function) button: Enters Function Mode for various settings (Dial Memory, Area Code, CID CW ON/OFF, Auto Talk ON/OFF).
  • DELETE button: Deletes entries.
  • CANCEL button: Cancels operations.
  • RDL (Redial) button: Redials the last number.
  • CID (Caller ID) button: Enters Caller ID mode.
  • Number 1 button: For long distance dialing.
  • Number 8 () button (time button): Displays date and time of received calls.
  • Number 9 (#) button: Displays the number of attempted calls by a caller.
  • (▲) button (up arrow button): Scrolls up the display screen.
  • (▼) button (down arrow button): Scrolls down the display screen.
  • (VOL/RING) button: Adjusts volume or ringtone.
  • (CH) (Channel) button: Changes channel.
  • FLASH button: For call waiting.

BASE UNIT CONTROLS

  • LINE modular jack: Connects to the phone line.
  • DC IN 9V jack: For power adapter.
  • Tone/Pulse switch: Selects dialing mode.
  • PAGE button: Pages the handset.
  • IN USE LED: Indicates when the unit is in use.
  • CHARGE LED: Indicates charging status.
  • POWER LED: Indicates power status.
  • Dot matrix display: Shows time, caller ID, and other information.
  • Battery icon: Indicates battery status.
  • talk icon: Shows when the handset is connecting or in use.
  • call id icon: Shows when the handset is connecting or in Caller ID review mode.
  • mem icon: Shows when data is being stored/deleted or Function Mode is in use.

Troubleshooting and error codes

Problem Troubleshooting Steps Notes/Page Reference
The bell does not ring. 1. When PAGE SW of the base is pressed, does the ringer on the handset ring? NG: See 2. The bell does not ring & page does not ring.
OK. When the TEL SG is joined with the base to make bell signal, is there pulse wave at pin 4 of IC4? NG: Check IC4 and TEL network circuit.
OK. Is there pulse wave at pin 59 of IC5? NG: Check R62, R65 and C41.
OK. Check IC5 and its peripheral circuit.
The bell does not ring & page does not ring. 1. Can the base and handset be connected? NG: See 3. The base and handset cannot be connected.
OK. Press handset DIAL key while in TALK MODE. Can key touch sound be heard from the ring? NG: When the key of the handset is pressed, can the pulse output at pin 58 of IC603 be seen? Check IC603.
OK. When the PAGE SW S1 of the base is pressed, does pin19 of IC5 change from high to low? NG: Check R40, R42 and S1.
OK. Check IC5 and its peripheral circuit.
OK. At the Q606 collector, can the pulse wave be seen? NG: Check RINGER Y601.
OK. Check R627,R629,R667, Q605,Q606, and Q613.
The base and handset cannot be connected. 1. Check whether the base is able to set in the test mode 1. NG: Check IC5 and its peripheral circuit.
OK. Check the TX POWER and the TX FREQUENCY on the base unit. NG: Check base RF unit.
OK. Set the base in the test mode 3, check whether deviation of the TX data is app. 7 kHz Dev. NG: Check whether there is a 250 Hz data waveform at pin 9 of J1. OK: Check base RF unit. NG: Check RT2, R30, R31, R32 R33, R57 and C28.
OK. Set the base in the test mode 8, 902.984676 MHz (250 Hz ±7 kHz Dev.) 1 mV output signal from RF jack is applied. Can the INUSE LED be lighted? NG: Check whether there is a 250 Hz data waveform at pin 1 of J1. OK: Check base RF unit. NG: Check RT1, Q1 and their peripheral circuits.
OK. Check whether there is a 250 Hz data waveform at the Q1 collector. OK: Check IC5 and its peripheral circuit. NG: Check Q3, Q4 and their peripheral circuits.
OK. Check whether there is a 250 Hz data waveform at pin 37 of IC5.
OK. Check IC5 and its peripheral circuit. NG: Check IC603 and its peripheral circuit.
OK. Check the TX POWER and the TX FREQUENCY on the handset unit. NG: Check handset RF unit.
OK. A
Set the handset in the test mode 3, check whether deviation of the TX data is app. 7 kHz Dev. NG: Check whether there is a 250 Hz data waveform at pin 9 of J601. OK: Check handset RF unit.
OK. Set the handset in the test mode 6, 926.994344 MHz (250 Hz ±7 kHz Dev.) 1mV output signal from RF jack is applied. Check whether the bell ring. NG: Check whether the 250 Hz data waveform from pin 1 of J601 is fed. OK: Check handset RF unit. NG: Check VR602, Q601 and their peripheral circuits.
OK. Place the handset on the base to charge about 5 seconds, then connect again. OK: Check whether there is a 250 Hz data waveform at the Q601 collector. OK: Check Q602, Q604 and their peripheral circuits.
OK. Check whether there is a 250 Hz data waveform at pin 55 of IC603. NG: Check IC603 and its peripheral circuit.
Cannot make a phone call (pulse). 1. Can the base and handset be connected? NG: See 3. The base and handset cannot be connected.
OK. While in TALK MODE, press dial key of the handset. Check whether square waveform from pin 58 of IC5 is fed. NG: Check IC5.
OK. Check Q15, RL1 and their peripheral circuits.
Cannot make a phone call (tone). 1. 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 pin20 of IC11 is fed? NG: Check IC11 and its peripheral circuits.
OK. Can tone signal be heard from the handset speaker? NG: Check IC3, Q2 and their peripheral circuits.
OK. Check the base TEL-line circuit and RELAY control circuit.
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