KX-TC1205RUB / KX-TC1205R UW / KX-TC1205R US / KX-TC1205RUF
9.2.How to change the channel
9.3.Adjustment
| Adjustment Items | Test Mode | Adjustment | Procedure | Check or |
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| Point |
| Replace |
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| Parts |
(A) | Battery Low | 3ch Talk | - | 1. Set the power supply voltage to DC3.60V, and confirm so that the reading | IC1 |
| Confirmation |
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| of oscillosope is High. |
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| 2. Set the power supply voltage to DC 3.40V, and confirm so that the |
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| reading of oscilloscope is Low. |
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(B) | TX VCO | 3ch Talk | T6 | 1. Adjust T6 so that the reading of the Digital Voltmeter is 1.0V ± 0.1V. | IC1, X1, |
| Voltage |
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| T6 |
(C) | RX VCO | 3ch Talk | - | ∙ Confirm RX VCO voltage so that the reading of the Digital Voltmeter is | IC1, X1, |
| Confirmation |
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| 2.9V ± 0.5V. | T6 |
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| L6, C24 |
(D) | TX Frequency | 3ch Talk | VC1 | ∙ Adjust VC1 so that the reading of the frequency counter is 39.875MHz ± | IC1, VC1 |
| Adjustment |
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| 0.1KHz. | DPX1, T5 |
(E) | TX Power | 3ch Talk | T5 | ∙ Adjust T5 so that the reading of the RF VTVM (50Ω load) is 5dBm ± | DPX1, Q5, |
| Adjustment |
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| 1dBm. | T5 |
(F) | RX Sensitivity | 3ch Talk | T3 | 1. Apply | DPX1, |
| Adjustment |
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| 0KHz). | T3,IC1, |
| (2nd IF output) |
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| 2. Adjust T3 so that the reading of RF VTVM is more than 15mV. | CF1, CF2 |
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(G) | Noise Squelch | 3ch Talk | - | 1. Measure the SSG output level when the noise squelch changes from Low | IC1, DPX1 |
| Confirmation |
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| to High. (modulation frequency 1KHz, dev.3kHz) |
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| 2. Confirm so that the SSG output level is |
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(H) | Speaker | 3ch Talk | - | 1. Apply | IC1 |
| Output Level |
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| 3KHz). |
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| confirmation |
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| 2. Confirm so that SP output level is 120mV ± 30mV. |
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| (distortion: less than 7%) (volume High). |
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(I) | Mic Modulation | 3ch Talk | - | 1. Apply a MIC signal (1KHz, 2.4mV at 600Ω load). | IC1, DV1 |
| Factor |
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| 2. Confirm so that the reading FM Deviation Meter is 3.1KHz ± 0.4KHz. |
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| Confirmation |
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(J) | Data | 3ch Talk | - | ∙ Confirm so that the reading of the FM Deviation Meter is 5kHz ± 1kHz. |
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| Modulation |
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| Confirmation |
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The connections of adjustment equipment are as shown in Adjustment Standard (Handset) (P.28).
SSG Frequency: 30.175 MHz
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