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Easy and secure way to get a complete service manual of a vintage hifi component. Only some parts of the print copy are dificult to read. Nice price!
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The manual is an excellent reproduction with complete schematics, made troubleshooting and repair a simple process.
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Up to now you are the BEST! Prompt-efficient and so reasonable ! I have been after SONY service manual for quite some time !Thank you very much ! I can recomend your service to
all my collegagues ! V.Bergfield .
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This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
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A complete manual with all the needed details of calibrations and service instructions about the radio receiver.
A big deal.
Many thanks !
SPP-S2730 SECTION 5 ELECTRICAL ADJUSTMENTS
0 dBm = 0.775 V BASE UNIT
� Make the set in the test mode. (See page 13) 1. Power Failure Test Procedure: 1. Connect between TP338 and TP306 (GND) on the BASE MAIN board by lead wire. 2. In the test mode idling status, press the [1] key to display �TEST A�. 3. Check that the [NEW CALL] LED on the base unit lights up when connect between TP203 and TP306 (GND) on the BASE MAIN board. 2. Ring Detection Test Procedure: 1. In the �TEST A� status, connect the base unit to telephone line. 2. Check that the LCD back light on the base unit lights up when call the base unit. 3. Line Closing of Parallel Connected Another Telephone Detection (On Hook) Test Procedure: 1. In the �TEST A� status, connect the base unit to telephone line. 2. Connect this set and another telephone in parallel to one telephone line. 3. Check that the [NEW CALL] LED on the base unit lights up when take up the receiver of another telephone. 4. Automatically Hold Canceling Test Procedure: 1. In the test mode idling status, press the [4] key to display �TEST D�. 2. Connect the base unit and another telephone in parallel to one telephone line. 3. Take up the local handset of base unit, and press the [HOLD] key to hold. 4. Check that the [NEW CALL] LED on the base unit lights up when take up the local handset of another telephone. 5. C-ID Input Level Measurement Setting:
feeding bridge Line Line Trunk Base unit TP101 TP102 Trunk
5.
Between Microphone and Line Signal Level Measurement Setting:
feeding bridge Line Line Base unit TP101 TP102
600 � Input Output GND audio analyzer 1.2 kHz, �27 dBm LPF: 30 kHz ON 10 µF + TP475 TP306 (GND)
Procedure: 1. Connect equipments as the figure above. 2. In the test mode idling status, press the [6] key to display �TEST F�, and press the [5] key to set the speaker path test 2 mode. 3. Set the output level of audio analyzer to �27 dBm (1.2 kHz, LPF=30 kHz ON). 4. Check that the value of audio analyzer is �2 to �8 dBm. 5. Press the [VOL --] key to return the test mode idling status. Press the [6] key to display �TEST F� again, and press the [4] key to set the speaker path test 1 mode. 6. Change the output level of audio analyzer to �36 dBm. 7. Check that the value of audio analyzer is �2 to �8 dBm. Between Line and Speaker Signal Level Measurement Setting:
feeding bridge Line Line Trunk Base unit TP101 TP102
7.
Output Input
100 µF TP476 16 �
GND audio analyzer 1.2 kHz, �27 dBm LPF: 30 kHz ON 100 µF
TP477 (SP GND)
Output Input GND audio analyzer 1.2 kHz, �17 dBm LPF: 30 kHz ON TP413 TP306 (GND)
Procedure: 1. Connect equipments as the figure above. 2. In the test mode idling status, press the [6] key to display [4] key to set the speaker path test 1 �TEST F�, and press the mode. 3. Set the output level of audio analyzer to �27 dBm (1.2 kHz, LPF=30 kHz ON). 4. Check that the value of audio analyzer is �2 to �8 dBm.
Procedure: 1. Connect equipments as the figure above. 2. In the test mode idling status, press the [6] key to display �TEST F�. 3. Set the output level of audio analyzer to �17 dBm (1.2 kHz, LPF=30 kHz ON). 4. Check that the value of audio analyzer is �15 to �21 dBm.
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