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UNI-T UT61E Multimeter teardown photos.

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user4963:

--- Quote from: Lightages on October 15, 2013, 04:24:04 pm ---I would guess that they are values that are subject to change or adjustment for trimming accuracy. Here is the schematic.

--- End quote ---

That not schematic. ?t ic 1778 ? and How do I find the values ??of these elements.
Multimeter shows wrong value. 1K play in resistance measurement.

Please somebody help me. How do find ic 1778 schematic ( or ic 1778 datasheet )

Lightages:
That is the schematic. I don't know what you are asking.

Legit-Design:

--- Quote from: user4963 on October 15, 2013, 05:41:19 pm ---
--- Quote from: Lightages on October 15, 2013, 04:24:04 pm ---I would guess that they are values that are subject to change or adjustment for trimming accuracy. Here is the schematic.

--- End quote ---

That not schematic. ?t ic 1778 ? and How do I find the values ??of these elements.
Multimeter shows wrong value. 1K play in resistance measurement.

Please somebody help me. How do find ic 1778 schematic ( or ic 1778 datasheet )

--- End quote ---

To my knowledge "ic 1778", that black thing next to those smd capacitors, is precision hybrid resistor network or similar. Please take  picture of the resistor you are measuring and how you are measuring it. I think the problem might lie in your measurements also. If you measure 5% resistor, its value might be +-5% of what is actually says on the resistor. Also don't measure resistors directly in circuit it might cause faulty readings. Since there is a language barrier taking pictures might be easiest thing to do.

user4963:

--- Quote from: Lightages on October 15, 2013, 05:48:43 pm ---That is the schematic. I don't know what you are asking.

--- End quote ---

The diagram C11a*,C11b*,.... no.I'm looking for these values

user4963:

--- Quote from: Legit-Design on October 15, 2013, 06:08:48 pm ---
--- Quote from: user4963 on October 15, 2013, 05:41:19 pm ---
--- Quote from: Lightages on October 15, 2013, 04:24:04 pm ---I would guess that they are values that are subject to change or adjustment for trimming accuracy. Here is the schematic.

--- End quote ---

That not schematic. ?t ic 1778 ? and How do I find the values ??of these elements.
Multimeter shows wrong value. 1K play in resistance measurement.

Please somebody help me. How do find ic 1778 schematic ( or ic 1778 datasheet )

--- End quote ---

Thank you
10k resistor.. Multimeter 9.205 measure vicinity

To my knowledge "ic 1778", that black thing next to those smd capacitors, is precision hybrid resistor network or similar. Please take  picture of the resistor you are measuring and how you are measuring it. I think the problem might lie in your measurements also. If you measure 5% resistor, its value might be +-5% of what is actually says on the resistor. Also don't measure resistors directly in circuit it might cause faulty readings. Since there is a language barrier taking pictures might be easiest thing to do.

--- End quote ---

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