Service BulletinAmateur Radio Division

Subject: TM-732A - S-Meter Squelch Scan Stop ImprovementDate: May 26, 1993

On some early versions of the TM-732A scan will not stop when operating in the S-Meter Squelch mode, even when the transceiver receives a signal with the same level as specified when initiating the S-Meter squelch mode.

Corrective Action:
Change the value of C42 in the 144 MHz TX/RX Unit (X57-4000 A/4) and C242 in the 430 MHz TX/RX Unit (X57-4000 B/4) from 1 uF to 0.47 uF.

Parts Required:
Kenwood Part No.
Circuit Description
2 0.47 uF capacitor CK73FF1C474Z C42, C242
This modification requires soldering equipment rated for CMOS type circuits. It also requires familiarity with surface mount soldering techniques. If you do not have the proper equipment or knowledge do not attempt this modification yourself. Seek qualified assistance.

Time required for this modification is 30 minutes or less. Service code A:59 B:X57-4000-11 C:C42/C242 D:91

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