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let's say first that i do not need to have a credit for my opinion, i am a retired sparkie and i voluteerd to fix an electronic device for a local "Youthgroup",as no diagram was present i checked the "net" and gambled on this site and paying some fee via PayPall, i was gladly surprised that the manual arrived as was stated, GOOD SHOW, and best wishes, John
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I had been looking for a Manual for my CS2150 for quite a while -- in fact I had just about given up. I saw this site and decided to download the Manual. When I Received it by Email I was really pleased with what I got, with the result that My Kenwood 'Scope is now 100% repaired and working well. As an AV Serviceman, you need a good 'scope, and thanks to this site, and the Service Manual, I have been able to repair it. The Manual was a copy of the Factory Original and the copy was very clear, especially in the area of the Circuit Schematics, where You really need to be sure of what You are looking at.
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I recently purchased a manual for a Samsung DLP tv to help with a trouble shooting problem I was having. Every tv repair shop wanted close to $400.00 for the fix, but after I found Owner-Manuals.com I hit pay dirt. The manual they had for me to purchase and download was a complete service manual for the exact tv I needed. It was complete with wiring diagrams, schematics, and even part numbers. If your the fix it yourself type I highly recommend trying to find any manual here before paying someone else to fix whatever problem your having.
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Once again, excellent price and manual delivered in a timely manner and as advertised!
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Outstanding quality manual. This is the exact documentation I needed to service my AKAI GX-210D. This is a PERFECT COPY of the service manual for my machine. Outstanding service. Thank-you!
SECTION 4 ELECTRICAL ADJUSTMENTS
0 dBm = 0.775 V BASE UNIT
� Make the set in test mode. (See page 7.) � TX Adjustments and Checks � 1. TX VCO Check Setting:
digital voltmeter
deviation meter
7. Check that the value of power meter is �5.5 dBm ± 1.5 dBm. 4. Modulation Sensitivity Adjustment Setting:
AF OSC 600 � LINE jack (J1)
+ �
1 kHz, �20 dBm
+ �
TP (TX VCO), TP (RX VCO) TP (GND)
+ �
TP (ANT) TP (GND)
Procedure: 1. Connect a digital voltmeter to TP (TX VCO), TP (RX VCO) and TP (GND) on the BASE RF board. 2. Check that both TP (TX VCO) and TP (RX VCO) voltage of digital voltmeter are 0.8 V to 2.2 V. 3. Set the [DIAL MODE] switch (S2) to the [TONE] position. 4. Press the [HANDSET LOCATOR] key (S1) three times to change the channel to 40CH. 5. Check that both TP (TX VCO) and TP (RX VCO) voltage of digital voltmeter are 0.8 V to 2.2 V. 6. Press the [HANDSET LOCATOR] key (S1) once to change the channel to 1CH. 7. Check that both TP (TX VCO) and TP (RX VCO) voltage of digital voltmeter are 0.8 V to 2.2 V. 2. TX Frequency Adjustment Setting:
frequency counter + � TP (ANT) TP (GND)
Procedure: 1. Connect an AF OSC to the LINE jack (J1) on the BASE MAIN board. 2. Connect a deviation meter to TP (ANT) and TP (GND) on the BASE MAIN board. 3. Set the [DIAL MODE] switch (S2) to the [PULSE] position. 4. Press the [HANDSET LOCATOR] key (S1) once to change the test mode step to TX MOD CHECK. 5. Adjust RT3 on the BASE MAIN board so that the value of deviation meter becomes 8 kHz ± 0.5 kHz. 5. Distortion and S/N Ratio Check Setting:
AF OSC 600 � LINE jack (J1)
+ �
1 kHz, �20 dBm
distortion meter
Procedure: 1. Connect a frequency counter to TP (ANT) and TP (GND) on the BASE MAIN board. 2. Restart the test mode to change the channel to 19CH. 3. Adjust CT1 on the BASE MAIN board so that the value of frequency counter becomes 926.897468 MHz ± 600 Hz. 3. TX Power Adjustment Setting:
power meter + � TP (ANT) TP (GND)
+ � noise meter
TP (ANT) TP (GND)
+ � CCITT: on
Procedure: 1. Connect a power meter to TP (ANT) and TP (GND) on the BASE MAIN board. 2. Adjust RT301 on the BASE RF board so that the value of power meter becomes �5.5 dBm ± 1 dBm. 3. Set the [DIAL MODE] switch (S2) to the [TONE] position. 4. Press the [HANDSET LOCATOR] key (S1) three times to change the channel to 40CH. 5. Check that the value of power meter is �5.5 dBm ± 1.5 dBm. 6. Press the [HANDSET LOCATOR] key (S1) once to change the channel to 1CH.
Procedure: 1. Connect a distortion meter and noise meter to TP (ANT) and TP (GND) on the BASE MAIN board. 2. Check that the value of distortion meter is less than 4%. 3. Check that the value of noise meter, and record it. 4. Stop outputting the signal of AF OSC. 5. Check that the value of noise meter again. And check that difference of level between in step3 and in step5 is less than 30 dB.
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