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The service was quick and simple, finding the service manual easy and it appears to be the original with colour schematics. It contained the info I was after and so sorted the problem.
I have copied it to CD and attached the envelope to the inside back cover of the owners manual. Good manual and excelent service. Robin Wood, Wood Electronics, New Zealand.
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Exactly what was needed to assess the product - excellent value and great service
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Nice to have the service manual for the Sony DCR-TRV345E now. The document is of excellent quality.
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MACKIE HR824 26 pages English-only Service Manual contains:
1) HR824 technical overview with the description of front and rear panel switches.
2) HR824 specs
3) Block Diagram
4) Wiring Diagram
5) Packaging management
6) Spare part & final assembly list (for PCB rev A and B) + exploded view
7) Test Procedures (where, how to measure voltage...) including Test Point diagram on the PCB.
8) IC and Transistor charts.
Excellent guide: very clear, good scan quality enabling us to print readable diagram :-)
Note:
Mackie HR824 make extensive use of surface mount devices (SMD). Service on the HR824 must
only be undertaken by experienced service technicians with the right tools, experience and patience to perform surface mount rework when needed.
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This Service manual is very well scanned and its clean to read, no any anti-theft words that un-english could understand. I got my CCD600 working with this manual and it´s clear shematics :)
21E-FG3RU
PIF ADJUSTMENT
No. Adjustment point 1 Tuner IFT ( PRESET ) Adjustment condition/procedure 1. Get the tuner ready to receive the CH. E - 9 signal,but with no signal input. Adjust the PLL data. 2. Connect the sweep generator's output cable to the tuner antenna. ( RF SWEEP ) 3. Adjust the sweep generator's to 80dBµV. 4. Connect the response lead ( use LOW IMPEDANCE probe with wave detector ; see Fig.1 ) to the tuner's IF output terminal. ( This terminal must have the probe alone connected ). 5. Set the RF AGC to 0 - 6 V with no saturation with the waveform. 6. Adjust the tuner IF coil to obtain the waveform as shown in Fig. 2. Note: Be sure to keep the tuner cover in position during this adjustment. Waveform or others
No. Adjustment point 1 PURITY ADJ.
PURITY ADJUSTMENT
Adjustment condition/procedure 1. Receive the GREEN-ONLY signal. Adjust the beam current to ~700 µA. 2. Degauss the CRT enough with the degausing coil. Note: Follow the Job Instruction Sheet to adjust the magnetic field. Vertical Bv: +0.030 mT (0.30 gauss) Horizontal Bh: +0.020 mT (0.20 gauss) (Reference: page 7-2) 3. Maintain the purity magnet at the zero magnetic field and keep the static convergence roughly adjusted. 4. Observe the points a, b as shown in Fig. 1-1 through the microscope. Adjust the landings to the A rank requirement. 5. Orient the raster rotation to 0 eastward. 6. Tighten up the deflection coil screws. » Tightening torque: 108 ± 20 N (11 ± 2 kgf) 7. Make sure the CRT corners landing meet the A rank requirements. If not, stick the magnet sheet to correct it. Note: This adjustment must be done after warming up the unit for 30 minutes or longer with a beam current over 700 µA. Note: Set the service mode by JA304 & JA307 (short) then press factory process R/C RGB key to change to RGB mono colour mode. * For the following colours press R/C RGB(Hex 7E) key to change. Waveform or others
a
b
10k
Oscilloscope
1n60
1000p IF OUT
100k
1000p 75ohm
Fig.1
E-9 CH P C
-1.5+/-0.8dB
30mm
Fig. 1-1
30mm
A
Fig.2
B A=B
Fig. 1-2 Rank "A" (on the right of the CRT)
2
RF-AGC TAKE OVER POINT ADJUSTMENT (I2C BUS CONTROL) (AUTO & MANUAL ADJ)
1. Receive "PAL COLOUR BAR" signal. » Signal Strength: 56 ± 1 dBµV (75 ohm open) 2. Connect the oscilloscope to TP201 (Tuner�s AGC Terminal) as shown in Fig. 3-1.
Oscilloscope 0.1V + � Bias box + �
» Bias box: About 4.5 V
* for Auto ADJ 1)Receive �PAL COLOUR BAR� signal. signal strength: 56 ± 1dBµV(75 ohm open) 1)Go to service mode. 2)Go to service data V01, press R/C to operate auto key (Hex C1) and confirm the �OK� display on the screen. 3)If appear NG, increase data some step and pls repeat step 2 again. 4)proceed step 4 & 5 in manual mode.
TP201
A
8
TV Set
GREEN ONLY
BLUE ONLY Signal-colour screen cleared
RED ONLY
B A=B
Fig. 3-1
3. Call "V01" mode in service mode. Adjust the "V01" bus data to obtain the Tuner output pin drop 0.1~1.0V below maximum voltage. 4. Change the antenna input signal to 63~67dBµV, and make sure there is no noise. 5. Turn up the input signal to 90~95 dBµV to be sure that there is no cross modulation beat.
Fig. 1-3
Rank "A" (on the left of the CRT)
* Press R/C RGB key for 1 second in NORMAL MODE, the colour will change to RGB mono colour mode.
8-1
8-2
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