Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

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Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!

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Tuesday 5 March 2019

SONY HDD AUDIO PLAYER SYSTEM - HAP-S1 - SERVICE DIAGNOSTICS TEST MODES – ELECTRICAL ADJUSTMENTS MODES – POWER SUPPLY AND POWER AMPLIFIER SCHEMATIC DIAGRAM – LM3876 – NJW1194 – AUDIO SYSTEM REPAIR AND SERVICE - HIGH RESOLUTION HDD AUDIO PLAYER

SONY HDD AUDIO PLAYER SYSTEM - HAP-S1 - service diagnostics test modes – Electrical adjustments modes – power supply and power amplifier schematic diagram – LM3876 – NJW1194 – Audio system repair and service - High resolution HDD audio player

Category: Audio System Repair and Service

Contents of this article

Service Diagnostics Test modes
Electrical test modes
Power amplifier schematic diagram

SONY HAP-S1

TEST MODE

Entering Method of The Service Diag Mode
Procedure:
1. Connect the power cord to an outlet.
2. After becoming the standby state, while holding down two keys of the [HOME] and [BACK], press two keys in order of the [PLAY] > [POWER].
3. Enter the service DIAG mode, “Main Menu” is displayed on the liquid crystal display.

Releasing Method of The Service DIAG Mode
# Press the [POWER ] button .
# Select the “QUIT” on the main menu.

Operation of The Service DIAG Mode
Version Info
It can display the version information.
Procedure:
1. Enter the service DIAG mode.
2. Rotate the [PUSH ENTER] knob to select the “Version Info”.
3. Press the [PUSH ENTER] knob to enter the “Version Info” mode.

ID Info
It can display the ID information.
Procedure:
1. Enter the service DIAG mode.
2. Rotate the [PUSH ENTER] knob to select the “ID Info”.
3. Press the [PUSH ENTER] knob to enter the “ID Info” mode.

LED/KEY
Procedure:
1. Enter the service DIAG mode.
2. Rotate the [PUSH ENTER] knob to select the “LED/KEY”.
3. Press the [PUSH ENTER] knob to enter the “LED/KEY” mode.

Power LED Check by MPU
It can check the [POWER] LED.
Procedure:
1. Enter the “ LED/KEY” mode.
2. Rotate the [PUSH ENTER] knob to select the “ Power LED Check by MPU”.
3. Press the [PUSH ENTER] knob to enter the “Power LED Check by MPU” mode.
4. The [POWER] LED continues blinking.
ALL LED Check by uCON
It can check two LEDs of the [POWER] and [DSEE].
Procedure:
1. Enter the “LED/KEY” mode.
2. Rotate the [PUSH ENTER] knob to select the “ALL LED Check by uCON”.
3. Press the [PUSH ENTER] knob to enter the “ ALL LED Check by uCON” mode.
4. Two LEDs of the [POWER] and [DSEE] continues blinking.

KEY Check
It can check the keys and knobs.
Procedure:
1. Enter the “LED/KEY” mode.
2. Rotate the [PUSH ENTER] knob to select the “ KEY Check”.
3. Press the [PUSH ENTER] knob to enter the “KEY Check” mode.

4. Each time a key on the main unit or remote commander is pressed and each time a knob on the main unit is rotated, character on the liquid crystal display corresponding to the keys and knobs turns the white color.

5. When all character on the liquid crystal display corresponding to the keys and knobs turns the white color, following screen is displayed on the liquid crystal display.

LCD/Others
Procedure:
1. Enter the service DIAG mode.
2. Rotate the [PUSH ENTER] knob to select the “ LCD/Others”.
3. Press the [PUSH ENTER] knob to enter the “ LCD/Others” mode.

LCD Color Bar
It can check the liquid crystal display.
Procedure:
1. Enter the “LCD/Others” mode.
2. Rotate the [PUSH ENTER] knob to select the “LCD Color Bar”.
3. Press the [PUSH ENTER] knob to enter the “LCD Color Bar” mode.
4. The color bar is displayed on the liquid crystal display.

LCD Back light Check
It can check the liquid crystal display back light.
Procedure:
1. Enter the “LCD/Others” mode.
2. Rotate the [PUSH ENTER] knob to select the “LCD Back light Check”.
3. Press the [PUSH ENTER] knob to enter the “LCD Back light Check.
4. The back light continues changing on the white screen

RTC Check
It can check the real time clock.
Procedure:
1. Enter the “LCD/Others” mode.
2. Rotate the [PUSH ENTER] knob to select the “RTC Check”.
3. Press the [PUSH ENTER] knob to enter the “RTC Check” mode.
4. The result of real time clock check “OK” or “NG” is displayed on the liquid crystal display.

FAN Control Check
It can change the fan motor speed.
Procedure:
1. Enter the “ LCD/Others” mode.
2. Rotate the [PUSH ENTER] knob to select the “FAN Control Check”.
3. Press the [PUSH ENTER] knob to enter the “FAN Control Check” mode.

4. Rotate the [PUSH ENTER] knob to select the “fan slow” and press the [PUSH ENTER] knob.
5. The fan motor is changed to slow speed.
6. Rotate the [PUSH ENTER] knob to select the “fan mid (HAP-S1 only)” and press the [PUSH ENTER] knob.
7. The fan motor is changed to medium speed.
8. Rotate the [PUSH ENTER] knob to select the “ fan high” and press the [PUSH ENTER] knob.
9. The fan motor is changed to high speed.

HDD
It can display the hard disk drive information.
Procedure:
1. Enter the service DIAG mode.
2. Rotate the [PUSH ENTER] knob to select the “HDD”.
3. Press the [PUSH ENTER] knob to enter the “HDD” mode.
Note 1: When the hard disk drive is damaged, the information (model name, serial number and firmware revision) of hard disk drive is not displayed on the liquid crystal display. In addition, when the cable connected to the hard disk drive is disconnected or broken, the information of hard disk drive is not displayed on the liquid crystal display. When the information of hard disk drive is not displayed, check the cable connected to the hard disk drive. When the cable is broken, replace it and enter the “HDD” mode again.

Note 2: Refer to “HDD CHECK” for the “SMART Short Test (2min)” mode and “SMART Long Test (2-4 hours)” mode.
4. Connect a USB memory (FAT32 formatted) to the USB connector on the main unit.
5. Rotate the [PUSH ENTER] knob to select the “SMART Data Read(Need USB Memory)” and press the [PUSH ENTER] knob.
(When a USB memory is not connected to the USB connector on the main unit, “Failed to save USB memory” is displayed on the liquid crystal display. But the SMART data is displayed on the liquid crystal display).

6. The SMART data is saved as a text file in the USB memory. (The file name is “hap_smart_data_xxxxx_yyyyy.log (xxxxx: hard disk drive model name, yyyyy: hard disk drive serial number))
Note 3: This file uses Linux newline code “LF”. You should use “Internet Explorer” or “text editor” that supports “LF” to open this file.
7. Rotate the [PUSH ENTER] knob to scroll the SMART data on the liquid crystal display, and SMART ID is displayed on the liquid crystal display.

8. Check the SMART raw value SMART IDs is displayed on the liquid crystal display.

9. If at least one of these ID’s SMART raw value is not “0”, SMART data check is NG.
Note 4: When the SMART data check is NG, replace the hard disk drive.

Audio
Procedure:
1. Enter the service DIAG mode.
2. Rotate the [PUSH ENTER] knob to select the “Audio”.
3. Press the [PUSH ENTER] knob to enter the “Audio” mode.

Play Audio Data
It can play back various audio data.
Procedure:
1. Enter the “ Audio” mode.
2. Rotate the [PUSH ENTER] knob to select the “Play Audio Data”.
3. Press the [PUSH ENTER] knob to enter the “Play Audio Data” mode.
(The volume control and muting function is available in this mode)

4. Select the audio data by rotating the [PUSH ENTER] knob and press the [PUSH ENTER] knob.
Note 1: “kHz DSD 0dB” does not play back continuously, and stops once after a few seconds.
Note 2: “1kHz PCM 0dB 32bit/48kHz PCM Direct” and “ 1kHz PCM 0dB 32bit/44.1kHz PCM Direct” cannot use in this unit.
5. The selected audio data is played back.
6. To stop the audio data, rotate the [PUSH ENTER] knob to select the “stop” and press the [PUSH ENTER] knob.
Note 3: When checking for the “OPT” or “COAX” in the “ Select Input” after playing back the “1. kHz DSD 0dB”, play back the “2. 1kHz PCM 0dB 32bit/44.1kHz” once, and then enter the “Select Input” mode.

Select Input
It can select the external audio input terminal.
Procedure:
1. Enter the “Audio” mode.
2. Rotate the [PUSH ENTER] knob to select the “Select Input”.
3. Press the [PUSH ENTER] knob to enter the “Select Input” mode.
(The volume control and muting function is available in this mode)

4. Select the external audio input terminal by rotating the [PUSH ENTER] knob and press the [PUSH ENTER] knob.
5. The audio data that input from selected external audio input terminal is output.
WiFi
Procedure:
1. Set the SSID and KEY of the connecting access point with “SONY_HAP_TEST”.
2. Enter the service DIAG mode.
3. Rotate the [PUSH ENTER] knob to select the “ WiFi”.
4. Press the [PUSH ENTER] knob to enter the “WiFi” mode.

Network/Module Info
It can display the wireless network and module information.
Procedure:
1. Enter the “WiFi” mode.
2. Rotate the [PUSH ENTER] knob to select the “Network/ module Info”.
3. Press the [PUSH ENTER] knob to enter the “Network/module Info” mode.
Ping/RSSI
It can display the results indicating whether or not the gateway responded to the PING and RSSI value.
Note: This mode supports only DHCP.
Procedure:
1. Enter the “WiFi” mode.
2. Rotate the [PUSH ENTER] knob to select the “Ping/RSSI”.
3. Press the [PUSH ENTER] knob to enter the “Ping/RSSI” mode.
4. The results indicating whether or not the gateway responded to the PING and RSSI value is displayed on the liquid crystal display.
(When the gateway does not respond to the PING, “Error!!
Can’t get gateway-ip” is displayed on the liquid crystal display)

Ether
Procedure:
1. Connect the main unit to the router with the network LAN cable.
2. Enter the service DIAG mode.
3. Rotate the [PUSH ENTER] knob to select the “Ether”.
4. Press the [PUSH ENTER] knob to enter the “ Ether” mode.

Network Info
It can display the wired network information.
Procedure:
1. Enter the “Ether” mode.
2. Rotate the [PUSH ENTER] knob to select the “Network Info”.
3. Press the [PUSH ENTER] knob to enter the “Network Info” mode.

Ping
It can display the results indicating whether or not the gateway
responded to the PING.
Note: This mode supports only DHCP.
Procedure:
1. Enter the “Ether” mode.
2. Rotate the [PUSH ENTER] knob to select the “Ping”.
3. Press the [PUSH ENTER] knob to enter the “Ping” mode.
4. The results indicating whether or not the gateway responded to the PING is displayed on the liquid crystal display.
(When the gateway does not respond to the PING, “Error!!
Can’t get gateway-ip” is displayed on the liquid crystal display)

IR Learning
This item cannot use in this unit.
Quit
Rotate the [PUSH ENTER] knob to select the “Quit” and press the [PUSH ENTER] knob, service DIAG mode is released.

ELECTRICAL CHECK

HDD CHECK
It can check the result of hard disk drive test.
Operation of The SMART Long Test
The SMART long test is mode to perform the overall test of hard disk drive.
When checking the hard disk drive, perform the SMART long test.
Procedure:
1. Enter the service DIAG mode.
2. Rotate the [PUSH ENTER] knob to select the “HDD”.
3. Press the [PUSH ENTER] knob to enter the “HDD” mode.

4. Rotate the [PUSH ENTER] knob to select the “SMART Long Test (2-4 hours)”.
5. Press the [PUSH ENTER] knob to enter the “SMART Long Test (2-4 hours)” mode.

6. Press the [PUSH ENTER] knob to abort the SMART long test.

7. When the result of test is OK, following screen is displayed on the liquid crystal display

Operation of The SMART Short Test
The SMART short test is mode to perform the simple test of hard disk drive in a short time.
Procedure:
1. Enter the “HDD” mode.
2. Rotate the [PUSH ENTER] knob to select the “SMART Short Test (2min)”.
3. Press the [PUSH ENTER] knob to enter the “SMART Short Test (2min)” mode.

4. Press the [PUSH ENTER] knob to abort the SMART short test.
5. When the result of test is OK, screen is displayed on the liquid crystal display.

POWER AMPLIFIER SCHEMATIC DIAGRAM

CLICK ON THE IMAGE TO ZOOM IN