Parts/Service for FD-9839

Parts/Service for FD-9839

Brand: TOSHIBA

Category: Telephone

Document Type: Parts/Service

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 8:09 p.m.

Manual Publish Date: 1999-12-01

Warranty Information

Refer to the manual for specific warranty details, as none are explicitly stated in the provided pages.

  • Base Unit Controls: Features include TEL LINE Jack, DC in 9V Jack, T-P (TONE-PULSE) switch, Ringer ON/OFF switch, Speaker, Antenna, LED Display, VOLUME button, DELETE button, MEMO/2WAY REC button, PLAY/STOP button, PAGE button, SKIP button, Rec Time Switch, CLOCK button, Ring Time Switch, SPEAKER button. Microphone, IN USE LED, CHARGE LED, POWER LED are also present.
  • Handset Controls: Includes Liquid Crystal Display (LCD), REDIAL(◀) button, TALK button, (TONE) button, (MEM) button, PAUSE button, FUNC button, DELETECH button. The dialpad has numeric keys, *, #, and function keys. VOL/RING (▲/▼) buttons, FLASH(►) button, SELECT button, and CID (Caller ID) button are also accessible. Charging contacts are located on the handset.
  • Alignment Procedure: Involves connecting test equipment like Spectrum Analyzers and FM Deviation Meters to specific test points (J1, J601) on the base and handset units to adjust power output and frequency.
  • Troubleshooting: Provides flowcharts for common issues like the bell not ringing, connection problems between base and handset, and inability to make calls. Also includes procedures for resetting the unit to factory settings and deleting Caller ID memory.

Troubleshooting and error codes

Problem Troubleshooting Steps
The bell does not ring. 1. Check if the PAGE SW on the base rings the handset. If NG, see 'The bell does not ring & page does not ring.' OK: Check IC5 and TEL network circuit if pulse wave is present at pin 4 of IC5 when TEL SG is joined. If not, check IC8 and its peripheral circuit if pulse wave is present at pin 49 of IC8.
The bell does not ring & page does not ring. 1. Check base and handset connection. If NG, see 'The base and handset cannot be connected.' OK: Press DIAL key in TALK MODE, check for key touch sound from ringer. If NG, check IC606. OK: Check pulse wave at Q609 collector. If NG, check RINGER Y601. OK: Check R667 and Q609. OK: When PAGE SW is pressed, check if pin63 of IC8 changes from high to low. If NG, check R147, R753, R758, R443, R754, C427 and Q403. OK: Replace defective part(s). OK: Check IC8 and its peripheral circuit.
The base and handset cannot be connected. 1. Check if the base can set in test mode 1. If NG, check IC4 and its peripheral circuit. OK: Check TX POWER and TX FREQUENCY on base. If NG, check base RF unit. OK: Press PAGE key twice, check deviation of TX data. If NG, check C19 waveform, IC2, Q2 peripheral circuit. OK: Check base RF unit. OK: Check if handset can set in test mode 1. If NG, check IC606 and peripheral circuit. OK: Check TX POWER and TX FREQUENCY on handset. If NG, check handset RF unit. OK: Proceed to section A.
Cannot make a phone call (pulse). 1. Check base and handset connection. If NG, see 'The base and handset cannot be connected.' OK: While in TALK MODE, press dial key of handset and check for square waveform from pin 46 of IC8. If NG, check IC8 and its peripheral circuit. OK: Check R83, D11, Q11, RL1 and peripheral circuit.
Cannot make a phone call (tone). 1. Check base and handset connection. If NG, see 'The base and handset cannot be connected.' OK: While in TALK MODE, press dial key of handset and check for tone waveform from Pin 23 of IC2. If NG, check IC2 and its peripheral circuit. OK: Check if tone signal can be heard from handset speaker. If NG, check IC3, Q3, Q4 and peripheral circuit. OK: Check base TEL-line circuit and RELAY control circuit.
Voice cannot be transmitted to other party (outgoing call). 1. Check base and handset connection. If NG, see 'The base and handset cannot be connected.' OK: Check if 1 kHz sine waveform from collector of Q606 is fed. If NG, check Q606 and its peripheral circuit. OK: Check 1 kHz sine waveform at pin 12 of IC602. If NG, check IC602 and peripheral circuit. OK: Check 1 kHz sine waveform at pin 22 of IC2. If NG, check IC2 and peripheral circuit. OK: Check 1 kHz sine waveform at Q4 collector. If NG, check IC2, Q4 and peripheral circuit. OK: Check 1 kHz sine waveform from TEL-line output. If NG, check T1, RL1 and their peripheral circuits. OK: Check MC601 of handset.
The voice of the caller cannot be heard (incoming call). 1. Check base and handset connection. If NG, see 'The base and handset cannot be connected.' OK: Check if 1 kHz sine waveform from Q7 collector is fed. If NG, check base TEL-line circuit and REPLAY control circuit. OK: Check 1 kHz sine waveform at pin 12 of IC2. If NG, check IC2 and its peripheral circuit. OK: Check 1 kHz sine waveform at pin 17 of IC602. If NG, check C611, R631, R629, R639, R641, C670, C671. OK: Check 1 kHz sine waveform between 1 and 2 of SP801. If NG, check C612, C614, W801, W802. OK: Check SP801.
The voice of the caller cannot be recorded. 1. Check OGM hearing when pushing OGM key. If NG, check around IC402 and IC408. OK: When 1 kHz -20dBm sine waveform is applied to TEL-line of the base, check sine wave at pin 13 of J402. If NG, check C29. OK: Check TEL network primary circuit. OK: Check sine wave at pin 39 of IC402. If NG, check around IC402. OK: Check around IC402 and IC408.
Outgoing message cannot be transmitted to other party. 1. Check voice wave at pin 36 of IC402 when OGM key is pressed. If NG, check around IC402 and IC408. OK: Check voice wave at pin 15 of J402. If NG, check around Q402. OK: Check TEL network primary circuit.
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