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Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
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Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
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Good pdf of the service manual for this unit. Includes disassembly instructions, full schematics, board layouts, parts lists and diagnostic information. Some information is in the pdf twice (single pages, and split pages), but that could be how it was originally generated by panasonic, or perhaps the idea is to make it eaiser to put onto 8.5 x 11" pages.
Information was exactly what I needed. Delivery was overnight (less than 12 hours) and I was happy with the process.
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OEM manual provided all schematics, board layouts and component specs necessary to facilitate unit maintenance. All pages were clear and readable.
SECTION 4 ELECTRICAL ADJUSTMENTS
Notes: 1. These adjustments are performed in the order that they are described. 2. Adjustment and measurement are performed for each channel unless otherwise specified. 3. Adjustment is made for the right channel first and then the left channel. 4. The power voltage is supplied with 9 V. Oscillation Frequency Adjustment Setting: Adjustment Location:
� TX board (side B) �
digital frequency counter
TP L TP R
TP L
TP R
LED board TP03 or TP04 (L-ch) TP05 or TP06 (R-ch)
+ �
Adjustment method: � Perform this adjustment without signal. 1. Connect TP L (L-ch) and TP R (R-ch) to ground on the LED board (to set the mute state), or use the test mode to set the mute state (see page 7). 2. Connect a digital frequency counter to TP03 or TP04 for L-ch and TP05 or TP06 for R-ch on the LED board. 3. Adjust L51 (L-ch) and L1 (R-ch) on the TX board so that the reading on the digital frequency counter is each within 2.3 MHz (L-ch) and 2.8 MHz (R-ch). Specified value: L-ch R-ch
� LED board (conductor side) �
TP05
TP05
TP06
TP06
L51 L1
2.298 to 2.302 MHz 2.798 to 2.802 MHz
RF Level Adjustment Setting:
digital voltmeter
TP03
TP03 TP04
LED board TP03 or TP04 (L-ch) TP05 or TP06 (R-ch)
TP04
+ �
� TX board (side A) �
Adjustment method: � Perform this adjustment without signal. 1. Connect TP L (L-ch) and TP R (R-ch) to ground on the LED board (to set the mute state), or use the test mode to set the mute state (see page 7). 2. Connect a digital voltmeter to TP03 or TP04 for L-ch and TP05 or TP06 for R-ch on the LED board. 3. Adjust RV51 (L-ch) and RV1 (R-ch) on the TX board so that the reading on the digital voltmeter is 480 mV.
RV51 RF LEVEL ADJUSTMENT
Specified value: L-ch R-ch
RV51 RV1
477.5 to 482.5 mV 477.5 to 482.5 mV
RV1 L51 L1 OSCILLATION FREQUENCY ADJUSTMENT
�8�
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