PHILIPS HQ562A
Service Manual

HQ 562/A
TROUBLESHOOTING - Shaving heads do not move smoothly over the skin. Cause: not enough Nivea for Men shaving emulsion. - Shaving performance has decreased. Cause: 1. Clogged shaving heads. The shaver has not been cleaned immediately after use and/or has not been rinsed with hot water or has not been rinsed long enough. 2. Long hairs in the shaving head. Clean the cutters and combs individually, since they are all matching sets. If the cutters and combs have accidentally become mixed up, it may take several weeks before optimal shaving performance is restored. 3. Shaving heads are damaged or worn. Check the combs for broken or indented lamellae. Only HQ156 stainless steel Cool Skin shaving heads may be used as replacements. - Compartment cover (item 21) cannot be closed. Cause: 1. The cartridge has not been positioned correctly. 2. The cartridge has not been pushed far enough into the shaver. - Shaver does not work when the on/off button is pressed. Cause: Batteries are empty. - Shaving emulsion has lost its colour or has become watery. Cause: The Nivea for Men emulsion has not been kept at the right temperature. TIPS FOR REPAIR - Remove the shaving unit to prevent damage during repair. - Remove the slide cover (item 21) and cartridge (item 20). - Push the edge of the hair chamber up with your thumb until the snap connection unlocks (see �X� in exploded view). - Remove 3 A1 screws. - Remove the cover (item 14). - Use a screwdriver to push the connecting plate (item 17) up at a connecting strip (�Z� in exploded view). - Tilt the motor slightly to detach the snap hooks of the hair chamber. - Lift the motor and the PCB out of the housing. - The cover (item 14) contains a sticker that is permeable to gas yet impermeable to water. - This sticker may not be removed under any circumstances. - The entire drive unit (item 10) is supplied as a single part to guarantee optimal sealing of the gear shafts. - When reassembling the shaver, the sealing ring (item 2) must be placed onto the housing. - A new sealing ring must be used to ensure a proper sealing of the shaver. - To guarantee that the shaver is completely watertight, only the original screws may be used. CIRCUIT DESCRIPTION The working of the power supply can be diagrammatically represented in the following blocks: B1. power plug B2. rectifier B3. electronic on/off switch B4. up-converter B5. motor control B6. charging circuit B7. battery B8. motor To show the differences between the NiCd version (HQ561) and the NiMH version (HQ562), we have combined the electrical diagrams of these versions. B1. Power plug The power plug of the two versions is identical and has been made specific for these shavers by means of two notches in the shaver plug. The transformer supplies an alternating voltage of approx. 5 V in unloaded condition. The relay switches between 145 and 185 V= in loaded condition and in this way adjusts the secondary voltage, depending on the mains voltage range of 100-130 V~ or 200-240 V~. B2. Rectifier The secondary voltage of T1 is rectified by bridge rectifier D2. Load signalling takes place by means of green LED D1. Although in the HQ562 load signalling can also be controlled by IC1 and take place via Ledn, we have opted for the solution indicated in the diagram for the sake of uniformity. B3. Electronic on/off switch If a pulse is generated via on/off switch SK1, interface IC2 will ensure a stable on/off position via inverters IC2a and IC2b. TS5 makes it impossible to switch the motor on when the shaver is connected to the mains. B4. Up-converter Inverters IC2c and IC2d have been configured as an oscillator and together with TS3 and L1 they provide a voltage that is higher than the battery voltage. B5. Motor control Motor control takes place via MOSFET TS4. The higher gate voltage (approx. 4.2 V) is produced by the up-converter and is rectified by D5. Zener diode D6 eliminates voltage peaks.

PCS 101 10201