Brand: PHILIPS
Category: Audio
Document Type: Parts/Service
Language: EN
Parts/Service for HTS5540/93/94/51
Uploaded: Nov. 21, 2025, 7:49 p.m.
Manual Publish Date: 2010-01-01
Warranty Information
This is a service manual and does not contain warranty information.
The manual provides a comprehensive guide to the DVD Home Theater System, including its specifications, software upgrade procedures, repair instructions, block diagrams, and detailed circuit diagrams for various boards (Main, Power, VFD, AMP, VOL+USB+MP3, Touch, Jack). It outlines procedures for restoring factory settings, changing stroke versions, and troubleshooting common issues through detailed repair charts. The document also includes PCB layout views for top and bottom.
Troubleshooting and error codes
| SECTION | SYMPTOM | PROBABLE CAUSE | REMEDY |
| A. All function No working | No working | Check all system all cable is loose or bad INT | Re-insert and fix the cable |
| No working | Panel stanby LED | Check all system | |
| B. Power Supply No Working | No working | All Voltage No Output | Check back power PCB F901 bad cause damage |
| No working | All Voltage No Output | Check F901 Bad Cause Damage | |
| C. All Function No Sound | No Sound | +34.5V Voltage No Output | Check IC905, IC912, IC913 And Its Conjoint Part |
| No Sound | -27V Voltage No Output | Check IC902, IC925 And Its Conjoint Part | |
| No Sound | +12V Voltage No Output | Check IC902, IC924 And Its Conjoint Part | |
| No Sound | +5V Voltage No Output | Check IC902, Q923 And Its Conjoint Part | |
| D. KARAOKE input No Sound | No Sound | BK5V Voltage No Output | Check IC902 And Its Conjoint Part |
| No Sound | BK5V Voltage No Output | Check Repair Switch Power Circuit (See B) | |
| E. Audio line IN No Output | No Output | CHECK VCC-5V, VD33-3.3V, VD18-1.8V | Check all Voltage 3.3V and 1.8V give circuit |
| F. Wireless No Output | No Output | CHECK VCC-5V, VD33-3.3V, VD18-1.8V | Check all Voltage 3.3V and 1.8V give circuit |
| G. DVD Audio No Sound | No Sound | Check Repair IC902 And Its Conjoint Part | |
| No Sound | Check RB901 pin1 +5V=5V | Check Repair switch power circuit (See B) | |
| No Sound | Check IC209 Pin238, pin239 OSC frequency (27MHz) | ||
| H. MP3 In No Sound | No Sound | Check IC209 Pin238, pin239 OSC frequency (27MHz) | |
| I. COAXIAL In No Sound | No Sound | Check IC209 Pin238, pin239 OSC frequency (27MHz) | |
| L. Tuner No Sound Output | No Sound | Check SW Power See B | |
| No Sound | Check IC209 Pin238, pin239 OSC frequency (27MHz) | ||
| O. HDMI No Output | No Output | Insert And Pull out HDMI cable | |
| No Output | Check Q611 And Conjoint Parts | ||
| No Output | Check IC209 Pin170/171, pin173/174, pin176/177, pin179/180 | ||
| P. No Y Pr Pb output | No output | Check JK702 Pin5, Pin3, Pin1 Video signal | |
| No output | Check IC209 PIN185, PIN182, pin183 To JK702 Conjoint Parts | ||
| No output | Check IC209 Pin170/171, pin173/174, pin176/177, pin179/180 | ||
| Q. No CVBS Output | No CVBS output | Check JK701 Pin1 Video signal | |
| No CVBS output | Check IC209 PIN134 To JK701 Conjoint Parts | ||
| No CVBS output | Check IC209 Pin170/171, pin173/174, pin176/177, pin179/180 |