diff --git a/_source/_posts/2026-07-25-yamaha-receiver-recap.md b/_source/_posts/2026-07-25-yamaha-receiver-recap.md index d032a0e..461cb38 100644 --- a/_source/_posts/2026-07-25-yamaha-receiver-recap.md +++ b/_source/_posts/2026-07-25-yamaha-receiver-recap.md @@ -43,7 +43,12 @@ which indicates that the normal range at that point is between 1.31 V and 2.01 V ## Service manual oddity -In the documentation of messages displayed when starting the self-diagnostic function, the HTR-3064 service manual lists a number of possible protection faults at previous shutdown, with associated messages displayed on the device shown as illustrations: +In the documentation of messages displayed when starting the self-diagnostic function, the HTR-3064 service manual lists a number of possible protection faults at previous shutdown, with associated messages displayed on the device shown as illustrations. + +{% figure caption:"HTR-3064 service manual: protection messages PS_PRT and PRV_PRT" %} +![HTR-3064 PS_PRT](assets/Yamaha-HTR-3064/htr-3064-PS_PRT.png) +![HTR-3064 PRV_PRT](assets/Yamaha-HTR-3064/htr-3064-PRV_PRT.png) +{% endfigure %} | Paragraph | Fault | Message from illustration | |---|---|---| @@ -67,7 +72,13 @@ Examination of the circuit diagrams confirm that the PS_PRT pin indeed averages Interestingly, no ADC pin of the CPU is labeled as PRV_PRT. -The service manual for the HTR-3067 has very similar text, but shows the PS_PRT illustration for the "abnormal voltage in power supply" condition, which contributes to confirming the logic here. +The service manual for the HTR-3067 has very similar text, but shows the PS_PRT illustration for the "abnormal voltage in power supply" condition, which contributes to confirming the logic here: + +{% figure caption:"HTR-3067 service manual: protection messages I_PROTECT and PS_PRT" %} +![HTR-3067 I_PROTECT](assets/Yamaha-HTR-3064/htr-3067-I_PROTECT.png) +![HTR-3067 PS_PRT](assets/Yamaha-HTR-3064/htr-3067-PS_PRT.png) +{% endfigure %} + # Investigation diff --git a/_source/assets/Yamaha-HTR-3064/htr-3064-PRV_PRT.png b/_source/assets/Yamaha-HTR-3064/htr-3064-PRV_PRT.png new file mode 100644 index 0000000..98e4c93 Binary files /dev/null and b/_source/assets/Yamaha-HTR-3064/htr-3064-PRV_PRT.png differ diff --git a/_source/assets/Yamaha-HTR-3064/htr-3064-PS_PRT.png b/_source/assets/Yamaha-HTR-3064/htr-3064-PS_PRT.png new file mode 100644 index 0000000..79e1db1 Binary files /dev/null and b/_source/assets/Yamaha-HTR-3064/htr-3064-PS_PRT.png differ diff --git a/_source/assets/Yamaha-HTR-3064/htr-3067-I_PROTECT.png b/_source/assets/Yamaha-HTR-3064/htr-3067-I_PROTECT.png new file mode 100644 index 0000000..9875eed Binary files /dev/null and b/_source/assets/Yamaha-HTR-3064/htr-3067-I_PROTECT.png differ diff --git a/_source/assets/Yamaha-HTR-3064/htr-3067-PS_PRT.png b/_source/assets/Yamaha-HTR-3064/htr-3067-PS_PRT.png new file mode 100644 index 0000000..b1f355e Binary files /dev/null and b/_source/assets/Yamaha-HTR-3064/htr-3067-PS_PRT.png differ